Research Publications

1998

1. Aduda, B.O, E.M. Ayiera and D.R. Newman, 1998), `Thermal Conductivity of Porous Insulators: Vermiculite and Wood-ash', KJST, Series A, 11 (1).

1999

1 Nyongesa, F.W. & Aduda B.O. (June 1999) Ultrasonic Attenuation in Clay Refractories, Brit. Ceramic Transaction, 98(6) 266 – 270.

2 Aduda B.O., F.W. Nyongesa and G. Obado, (1999) ‘Improving the green and fired fracture strength of a kaolinite ceramic using some vegetable syrup’, J. Mater. Sci. Lett. 18 1653–1655.

2000

1. A.K. Raturi, S. Waita, B. Aduda, T. Nyangonda (2000), Photoactive Iron Pyrite Films for Photoelectrochemical (PEC) cells, Renewable Energy 20(2000) 37 – 43.

2. Aduda B.O. and F.W. Nyongesa, (2000) ‘The role of aspect ratio on the elastic moduli of a triaxial ceramic system’, Brit. Ceramic Transactions, 99(5) 206 – 211.

3. Nyongesa F.W and B.O. Aduda (2000), ‘Effect of silica additions on strength and elastic modulus of Kenyan industrial clay ceramic’, East Africa Journal of Science, 2(2) 77-89.

2002

1. J. N. Kimani, “An assessment of the thermo-physical properties of a crog modified Kenyan Kaolite Refractory”, Ph.D. Thesis, University of Nairobi, 2002

2. R. J. Musembi, “Degradation Studies of Multilayer Coatings Exhibiting Angular Dependent Transmittance”, M.Sc. Thesis, University of Nairobi, 2002

3. J. Simiyu, “Sensitisation and Stability Studies of Anthocyanin based sensitization Dyes on Nanoporous TiO2 Photoelectrochemical Thin Film Solar Cells”, M.Sc. Thesis, University of Nairobi, 2002

4. A. Ogacho, “Effects of Corchorus Olitorius derived binder on functional properties and thermal shock resistance of a kaolite refractory” M.Sc. Thesis, University of Nairobi, 2002.

2003

1. Ogacho A., Aduda B. O. and Nyongesa F. W. (2003). Thermal Conductivity of a kaolite refractory: Effects of an organic binder. Journal of Material Science, 38, 2293-2297.

2. B.O. Aduda and A.R. Boccaccini (June 2003), Velocity of Elastic Waves in Porous Ceramic Materials: Influence of Pore Structure, British Ceramic Transactions, 102(3) 103-108.

3. Lindgren T., Mwabora J. M., Avendano E. D., Jonsson J., Hoel A., Granqvist C. G. and Lindquist S.E. (2003). Photoelectrochemical and Optical Properties of Nitrogen doped Titanium Dioxide Prepared by Reactive D.C. Magnetron Sputtering. Journal of Physical Chemistry B107, 5709-5716.

4. Omollo F. J. (2003). Equipment Maintenance and Standard Operation Procedure, NUNESA Regional Workshop on Laboratory Management, 17-28th March, 2003, Nairobi Safari Club, Nairobi.

5. Mwabora J. M., Lindgren T., Avendano E. D., Granqvist C. G., Lindquist S.E.(2003). Photoelectrochemical Solar Cells Based on Nitrogen doped TiO2 Electrodes, Book of Abstracts, ISES Solar World Congress 2003, 99.

6. Waita S. M., Aduda B. O., Mwabora J. M., Niklasson G., Lindquist S. E., Granqvist C. G.(2003). DC Sputter Deposited TiO2 Photoelectrodes: Effect of Deposition Angle on the Efficiency of Dye Sensitized Solar Cells. Book of Abstracts, ISES Solar World Congress 2003, 99.

7. Musembi R. J., Mwabora J. M., Mbise G. W. (2003). Accelerated Degradation Studies for MgF2/Ag/MgF2 Multilayer Coatings, Book of Abstracts, ISES Solar World Congress 2003, 156-157.

8. Magoha P., Mwabora J. M., Agumba M. and Mwamburi M. (2003). Status of Renewable Energy in Kenya. ISES Solar World Congress 2003, Forum for Developing Countries.

9. Mwabora J. M., Lindgren T., Avendano E. , Niklasson G., Lindquist S.-E. and Granqvist C. G.(2003). Fabrication and characterization of nitrogen doped titanium dioxide thin films for photoelectrochemical solar cell applications. Book of Abstracts, International Conference on partnership in Scientific Research capacity Development, 4-7th August 2003, Dar es Salaam, Tanzania, 26.

10. Mwabora J. M. (2003). Solar Photovoltaic (PV) Power and Services: Demonstration Kit, Consultancy and Installation, presented at the Workshop on Implementation of Phase one of the Chiromo Science Park, Reef Hotel, Mombasa, Kenya, 9-12 July, 2003.

11. Lindgren T., G. Romualdo Torress, J. Mwabora, E. Avendano Soto, J. Johnsson, A Hoel, C. G. Granqvist and S.E. Lindquist (2003). Photoelectrochemical and Optical Properties of nitrogen doped titanium dioxide films prepared by reactive DC magnetron sputtering, presented at the 203rd meeting of the Electrochemical Society. May 2003. Paris France.

2004

1. Julius M. Mwabora, Torbjörn Lindgren, Esteban Avendano, Thomas J. Jaramilo, Jun Lu, Sten-Eric Lindquist and Claes-Göran Granqvist, Structure, Composition, and Morphology of Photoelectrochemically Active TiO2-xNx Thin Films Deposited by Reactive DC Magnetron Sputtering, J. Phys. Chem. B, 108 (2004) 20193-20198

2. Simiyu, Justus, Aduda, Bernard O., Mwabora, Julius M., Anthocyanin Sensitized Nanoporous TiO2 PEC Solar Cells Prepared by a Sol Gel Process, Progress in Colloid and Polymer Science, 125 (2004) 34-37

3. Th.Dittrich,, H.-J Muffler, M. Vogel, T.Guminskaya, A. Ogacho, A.Belaidi, E. Strub, W. Bohne, J. Rohrich, O. Hilt, M.Ch.Lux-Steiner, Passivation of TiO2 by ultra-thin Al-oxide, Applied Surface Science 240 (2005) 236-243

4. B.O. Aduda, P.Ravirajan, K.L. Choy, and J. Nelson, Effect of Morphology on Electron Drift Mobility in Porous TiO2 International Journal of Photoenergy, 6 (2004) 141- 147.

5. F. W. Nyongesa and B. O. Aduda, The Effect of Quartz and Mullite Phases on Strength of Triaxial Porcelain, East African Journal of Physical Sciences, 5(1) (2004) 11-24.

6. J. N. Kimani and B. O. Aduda, Temperature Dependence of the Thermal Conductivity of Grog Modified Kenyan Kaolite Refractory, Africa Journal of Science and Technology, 5(1) (2004) 6-14.

7. B. O. Aduda, A. A. Ogacho, J. N. Kimani and F. W. Nyongesa (2004), Thermal Behaviour of Kaolite Refractory: Effect of Varying Preparation Parameters, The East Africa Materials Research Society (EAMRS) Conference, Dar es Salaam, Tanzania, 14-18th July, 2004,

2005

1. Th. Dittrich, H.-J. Muffer, M. Vogel, T. Guminskaya, A. Ogacho, A. Belaidi, E. Strub, W. Bohne, J. Röhrich, O. Hilt, M. Ch. Lux-Steiner, Passivation of TiO2 by ultra-thin Al-oxide, Journal of Applied Surface Science, 240, 236 – 243 (2005)

2. R. Bayon, R. Musembi, A. Belaidi, M. Bär, T. Guninskaya, M.-Ch. Lux-Steiner, Th. Dittrich Highly structured TiO2/In(OH)xSy/PbS/PEDOT:PSS for photovoltaic applications, Solar Energy Materials and Solar Cell, 89, 13 – 25 (2005)

3. B. O. Aduda, Materials Science: A Spin off of Research and Development, presented at the Kenya National Academy of Sciences (KNAS) National Workshop on Science and Technology Capacity in The Framework of Millennium Development Goals: A Commemoration of Scientific Revival Day of Africa, 7th-9th December 2005, Nairobi Kenya.

2006

1. A.A. Ogacho, B.O. Aduda and F.W. Nyongesa (Dec. 2006), Thermal Shock Behaviour of a Kaolinite Refractory Prepared Using a Natural Organic Binder, Journal of Materials Science, 41(24) 8276 – 8283.

2. R. Bayon, R. Musembi, A. Belaidi, M. Bär, T. Guninskaya, Ch. H. Fischer, M. Ch. Lux Steiner, Th. Dittrich Highly structured TiO2/In(OH)xSy/PbS/PEDOT:PSS to be used in Photovoltaic Applications, French Journal Chemie, 9 # 5-6, 730 -734 (2006)

3. Julius Mwabora, Klaus Ellmer, Abdelhak Belaidi, J¨org Rappich, and Thomas Dittrich, Reactively sputtered TiO2 layers on SnO2:F substrates: a Raman and SPS study, DS 24.15 Tue 15:00 P2: Presented at the Germany Physical Society (Deutschen Physikalischen Gesellschaft-DPG) Conference (in conjunction with 21st General Conference of the EPS Condensed Matter Division), Dresden, Germany, 26-31st March, 2006.)

4. J. Simiyu, J.M. Mwabora, B.O. Aduda, S-E. Lindquist, A. Hagfeldt, G. Boschloo, Titania Nanotubes Prepared by Synthesis Method for Dye Sensitized Electrochemical Solar Cells Presented at the International Conference on Microstructures and Nanotechnologies (ICMNT2006), Tizi-Ouzou, Algeria, 9-23 November 2006. Full paper submitted to Journal of Materials – Electronic Materials

5 Mwabora, J. M., Simiyu, J., Waita, S., Muthoka B., Aduda, B. O. (2006): Nanostructured TiO2 for Dye Sensitized Photoelectrochemical Solar Cells, Poster presented at the ICTP-NCNNC-ICTS Asian Pacific Regional College on “Science at Nanoscale”, Beijing, P. R. China, 14-25 August 2006.

6. S. M. Waita, J. M. Mwabora, B.O. Aduda, G. A. Niklasson, S – E. Lindquist and C. G. Granqvist (2006), Performance of Dye Sensitized Solar Cells fabricated from Obliquely DC Sputtered TiO2 Films, Africa Jnl. of Science and Technology, Series, 7(2), 125 – 139

7. B.O. Aduda (2006), Material Science, Promotion of Science and Technology (POST), Vol. XII No. 1, p19 –22.

8. Mugo, S. W., Ngaruiya, J. M., and Mwabora, J. M. (2006): Fabrication and characterization of nitrogen-doped titanium dioxide dye sensitized solar cells, Presented at the 7th College on Thin Film Technology, Dar es Salaam, Tanzania, 24th July – 4th August 2006.

9. Ajuoga, P., Ogacho, A., Mwabora, J. M., Aduda, B. O. (2006): Effects of concentration of dopant states on photoactivity in niobium-doped TiO2, Presented at the 7th College on Thin Film Technology, Dar es Salaam, Tanzania, 24th July - 4th August 2006.

10. J. M. Mwabora, Development Trend in Materials Science, Paper presented at the National Symposium on “Science, Technology, Innovation and Society: The African Perspectives and Experiences”, June 29-30, 2006, Lenana House Nairobi

11. Bernard O. Aduda, Solar Energy, Paper presented at the National Symposium on “Science, Technology, Innovation and Society: The African Perspectives and Experiences”, June 29-30, 2006, Lenana House Nairobi

2007

1. Waita, S. M., Aduda, B. O., Mwabora, J. M., Granqvist C.G., Lindquist, S.-E., Niklasson, G. A., Hagfeldt, A., Boschloo G. (2007): Electron Transport and Recombination in Dye Sensitized Solar Cells fabricated from obliquely sputter deposited and thermally annealed TiO2 films. Journal of Electroanalytical Chemistry, 605, 151-156.

2. R.J. Musembi, B.O. Aduda, J.M. Mwabora, R. Bayon, A. Belaidi, M. Bär, T. Gumiskaya, Th. Dittrich, M.Ch. Lux-Steiner: Solar cell with PbS extremely thin absorber (eta) on porous substrate based on novel eta concept, 6th Edward Bouchet Abdus Salam Institute International Conference on Physics and Technology for sustainable development in Africa (EBASI2007), 23-26 January 2007, Cape Town, South Africa

3. Njogu, M. S., F. W. Nyongesa, and B. O. Aduda, Fracture Toughness and Fatigue of Kaolin - Based Refractories: Effect of Plant Derived Organic Binders, 4th Africa Materials Research Society (AMRS) International Conference, 9th -15th December, Dar es salaam, Tanzania

4. Aduda B.O., Waita S.M, Ogacho A.A., Mwabora J. M., Musembi R.J. and Simiyu J.: Columnar and passivated nanoporous TiO2 based excitonic solar cell, Paper presented at the US/Africa workshop on frontiers in Material Science, 20-27 January 2007, Abuja, Nigeria.

5. F. W. Nyongesa, W. G. Nyaga, B. O. Aduda: Electrophoretic Deposition (EPD) for Photocatalytic Applications, Poster presented at the 6TH EDWARD BOUCHET-ABDUS SALAM INSTITUTE INTERNATIONAL CONFERENCE, 23-26 Jan, 2007, iThemba LABS, Cape Town, South Africa.

6. F. W. Nyongesa, W. G. Nyaga, B. O. Aduda: Electrophoretic Deposition (EPD) of Materials and Its Applications, Poster presented at the WAYS-RAO CONFERENCE, 21-22 March, 2007, Pretoria, South Africa.

7. J. Simiyu, J.M. Mwabora, B.O. Aduda, A. Ogacho, G. Boschloo, A. Hagfeldt, S-E. Lindquist, Synthesis and Characterization of Titania Nanotubes for Dye Sensitized Electrochemical Solar Cells, Paper presented at the ICE2007, International conference on Electroceramics, 31 July - 3rd August 2007, Arusha, Tanzania.

8. R.J. Musembi, B.O. Aduda, J.M. Mwabora, M. Rusu, K. Fostiropolous, M.Ch. Lux-Steiner: Temperature dependent characterization of TiO2/In(OH)xSy/PbS/PEDOT:PSS eta Solar Cell, International Conference on Nanoscience and technology (ICN+T 2007), 2-6 July 2007, Stockholm, Sweden.

9. Mwabora J. M: Status of Renewable Energy Use in Kenya, presented at the International Workshop on “Renewable Energy for Sustainable Development in Africa” 18-21 June 2007, Mauritius.

10. W.N. Gatimu, B.O. Aduda, and F.W. Nyongesa; Electrophoretically deposited TiO2 thin films for photocatalytic oxidation of phenol, The 6th Edward Bouchet-Abdus Salam Institute International Conference, iThemba LABS, Cape Town, South Africa (Poster Presentation)

11. Wilson Nyaga Gatimu, Photocatalytic Oxidation of Phenol Using TiO2 Thin Films Prepared by Electrophoretic Deposition, M Sc Thesis, University of Nairobi, 2007

2008

1. R.J. Musembi, M. Rusu, J. M. Mwabora, B.O. Aduda, K. Fostiropoulos, M. Ch. Lux-Steiner, Intensity and temperature dependent characterization of eta solar cell, Physica Status Solidi, 205 7 (2008) 1713 – 1718.

2. S. Njogu, F.W. Nyongesa, B.O. Aduda (2008), Effect of plant-derived organic binders on fracture toughness and fatigue of kaolin-based refractories, Journal of Materials Science, 43 4107 – 4111

3. Julius M. Mwabora, K. Ellmer, A. Belaidi, J. Rappich, W. Bohne, J. Röhrich, Th. Dittrich, Reactively sputtered TiO2layers on SnO2:F substrates: A Raman and surface photovoltage study, Thin Solid Films 516 (2008) 3841– 3846

4. R.J. Musembi, B.O. Aduda, J.M. Mwabora, R. Bayon, Solar cell with Pb(OH)xSy extremely thin absorber (eta) based on the novel eta concept, Africa Journal of Science and Technology 9 2

5. B. O. Aduda, "Dye-sentised solar cells as an alternative to p-n junction based photovoltaics: The current status". Presented at the Africa Accademy of Sciences organized TWAS - ROSSA 3rd Young Scientist Conference on "Alternative Sources of Energy: Potential for Renewable Energies and Biofuels in Africa", 15 - 17 Dec. 2008, Nairobi - Kenya

6. Bernard O. Aduda, " From Science to Technology: Our Kenyan Experience and the Missing Link". Presentated at the 1st National Conference and Exhibition for Dissemination of Research Results and Review of Innovations. April 28 – 30th, Nairobi

7. Sebastian Waita, Dye Sensitized Solar Cells Fabricated from Obliquely Sputtered Nanoporous TiO2 Thin Films: Characterization, Electron Transport and Lifetime Studies, PhD Thesis, University of Nairobi (2008)

8. Kahuthu Wambugu, Transport phenomena of photo-injected electrons in dye sensitized solar cells, M Sc Thesis, University of Nairobi, 2008 10. Joseph Olwendo, Studies on mobility of photo-injected carriers in an open circuit condition in DSSC, M Sc Thesis, University of Nairobi, 2008

2009

1. Sebastian M. Waita, Bernard O. Aduda, Julius M. Mwabora, Gunnar A. Niklasson, Claes G. Granqvist, Gerrit Boschloo, Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering, Journal of Electroanalytical Chemistry 637 (2009) 79-83.

2. Christian Herzog, Abdelhak Belaidi, Alex Ogacho and Thomas Dittrich, Inorganic solid state solar cell with ultra-thin nanocomposite absorber based on nanoporous TiO2 and In2S3, Energy and Environ. Sci. 2(2009) 962-96483.

3. Bernard O. Aduda, “Status of Nanoscience and Nanotechnology in Kenya”, International Workshop on Nanotechnology: Present Status and Future Prospects in Developing Countries. 18 – 20 May 2009, Kashan, Iran

4. Bernard Aduda, Justus Simiyu, Julius Mwakondo Mwabora, Conduction Band Edge of (Ti,Sn)O2 Solid Mixtures Tuning for Photoelectrochemical Applications, MRS- Materials Research Society, Paper #: 1171-S05-04, DOI: 10.1557/PROC-1171-S05-04, (2009)

5. Nyangonda T, Mulati D.M. and Aduda B. O., Crystallization of DC sputtered amorphous silicon thin films using sandwiched metal induced crystallization, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

6. H.B Wafula, J.Simiyu, S. Waita, B.O. Aduda and J.M. Mwabora, Structural and morphological characteristics of pressed nitrogen doped TiO2 photoelectrodes for dye-sensitized solar cells, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

7. R.J.Musembi, M.Rusu, J.M. Mwabora, B.O Aduda, K.Fostiropolous, M.Ch. Lux-steiner, Temperature dependent characterization of TiO2/In(OH)xSy/PbS/PEDOT:PSS ETA Solar Cell, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

8. J. Simiyu, B.O Aduda and J.M Mwabora, G. Boschloo and A. Hagfeldt, Investigation of effect of film thickness on electron transport and lifetimes in TiO2 dye sensitized solar cells fabricated by screen-printing technique, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

9. Sebastian M. Waita, Bernard O. Aduda, Julius M. Mwabora and Gunnar A. Niklasson , Optical characterization of sputtered TiO2 compact layers for dye-sensitized solar cell applications, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

10. Julius M. Mwabora, Nanotechnology and its applications in solar energy, The 1st International Conference on Solar Energy Materials Research, October 13-15, 2009, Belinda Ocean Resort Dar es Salaam, Tanzania

11. Julius M. Mwabora, Analyzing J.A.B. university admission statistics for Coast Region from 2003 to 2008., Coast Education Workshop, 11th December 2009, Mombasa Polytechnic University College.

12. Waita S.M., (2009), Use of compact underlayer thin film for improved solar cell performance, Paper presented at Kenya DAAD Scholars Association National Conference on Science & Technology for Development held at Masinde Muliro University of Science and Technology (MMUST), June 11th-12th 2009, Kakamega, Kenya.

13. Robinson Juma Musembi, Fabrication and Characterization of In(OH)xSy Modified Highly Structured TiO2/Pb(OH)xSy/PEDOT:PSS eta Solar Cell, and Study of its Transport Mechanism, PhD Thesis, University of Nairobi, 2009

2010

1. J. Nissfolk, K. Fredin, J. Simiyu, L. Haggman, A. Hagfeldt, G. Boschloo, Interpretation of small-modulation photocurrent transients in dye-sensitized solar cell – A thickness study, Journal of Electroanalytical Chemistry, 646 (2010) 91 - 99

2. N. Rahbar, B.O. Aduda, J. Zimba, S.K. Obwoya, F.W. Nyongesa, I. Yakub and W.O. Soboyejo (2010), Thermal Shock Resistance of a Kyanite-Based (Aluminosilicate) Ceramic, Experimental Mechanics, DOI 10.1007/s11340-010-9345-3 (published online: 27 April 2010)

3. Waita S.M., Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering , Workshop on African School of Nanosciences for Solar Energy Conversion, Addis Ababa, Ethiopia, 3rd-7th May 2010

4. Waita, S.M., Title: Extraction of Resistances in Dye-Sensitized Solar Cells Fabricated from obliquely Sputtered TiO2 thin films, Conference on Opto-electronic Devices: Their Potential for Sustainable Development, Department of Physics, University of Nairobi, 8th-9th July 2010

5. Robinson J. Musembi, Bernard O. Aduda, Julius M. Mwabora, Marin Rusu, Konstantinos Fostiropoulos, and Martha Ch. Lux-Steiner, Transport Mechanism Analysis of TiO2/ Pb(OH)xSy/PEDOT:PSS eta Solar Cell Modified with In(OH)xSy Buffer Layer, Workshop on African School of Nanosciences for Solar Energy Conversion, Addis Ababa, Ethiopia, 3rd-7th May 2010

6. Cosmas Muiva, Stephen Santhiaraj and Julius M. Mwabora, Optical, electrical and structural properties of Se-In-Bi chalcogenide glasses: Phase change materials for data storage, Proceedings 1st African Materials Science and Engineering Network (AMSEN) workshop, Windhoek, Namibia, 27-29th January, 2010, Pages 15-16.

7. Cosmas Muiva, Stephen Sathiaraj and Julius M. Mwabora, Properties of Spray Pyrolysed In2Se3 Chalcogenide Glass Thin Films, Poster presentation, Regional Initiative in Science and Education (RISE) Network meeting, Johannesburg, South Africa, 4-8 October 2010.

8. Bernard O. Aduda, Energy demand, usage and consequences: the Kenyan case, Conclave of Afro Asia Young Scientists: on the theme “Energy, Climate and Development”, Jawaharlal Nehru Centre for Advanced Scientific Research; Jakukur, Bangalore-560 64, India, February 11 – 13, 2010

9. Justus Simiyu, Julius Mwabora, Bernard Aduda, Gerrit Boschloo and Anders Hagfeldt, Electron Transport and Recombination Studies on TiO2 Dye Sensitized Solar Cells Employing Electrochemical Potential Techniques: the Effect of Film Thickness, Conference on Opto-Electronic Devices: Their Potential for Sustainable Development Department of Physics, University of Nairobi, Kenya July 8th - 9th, 2010

10. Alex A. Ogacho, Passivation of Ultrathin Nanocomposite TiO2 for Photovoltaic Applications, PhD Thesis, University of Nairobi, 2010

11. Justus Simiyu: Characterization of Anthocyanin Dyes and Investigation of Charge Transport in TiO2 Dye Sensitized Solar Cells , PhD Thesis, University of Nairobi, 2010

12. Bernard Aduda (Chairman of Committee), NANOTECHNOLOGY DEVELOPMENT IN KENYA, A Report to the Ministry of Higher Education, Science and Technology prepared by an Ad hoc Committee on Nanotechnology of the National Council for Science and Technology (2010)

13. J. M. Mwabora, Kenya DAAD Scholars Association National Conference on Science & Technology for Development held at Masinde Muliro University of Science and Technology (MMUST), June 11th-12th 2009, Kakamega, Kenya

14. Cosmas Muiva, Stephen Santhiaraj and Julius M. Mwabora, Optical, electrical and structural properties of Se-In-Bi chalcogenide glasses: Phase change materials for data storage, Proceedings 1st African Materials Science and Engineering Network (AMSEN) workshop, Windhoek, Namibia, 27-29th January, 2010, Pages 15-16.

15. Cosmas Muiva, Stephen Sathiaraj and Julius M. Mwabora, Properties of Spray Pyrolysed In2Se3 Chalcogenide Glass Thin Films, Poster presentation, Regional Initiative in Science and Education (RISE) Network meeting, Johannesburg, South Africa, 4-8 October 2010.

16. Robinson J. Musembi, Bernard O. Aduda, Julius M. Mwabora, Marin Rusu, Konstantinos Fosti-ropoulos, and Martha Ch. Lux-Steiner, Transport Mechanism Analysis of TiO2/ Pb(OH)xSy/PEDOT:PSS eta Solar Cell Modified with In(OH)xSy Buffer Layer, Conclave of Afro Asia Young Scientists: on the theme “Energy, Climate and Development”, Jawaharlal Nehru Centre for Advanced Scientific Research; Jakukur, Bangalore-560 64, India, February 11 – 13, 2010

17. Waita S.M., Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering, 1st Workshop on African School of Nanosciences for Solar Energy Conversion, Addis Ababa, Ethiopia, 3rd-7th May 2010

18. Waita, S.M., Extraction of Resistances in Dye-Sensitized Solar Cells Fabricated from Obliquely Spu ttered TiO2 thin films, Conference on Opto-electronic Devices: Their Potential for Sustainable Development, Department of Physics, University of Nairobi, 8th-9th July 2010

19. Bernard O. Aduda, Energy demand, usage and consequences: the Kenyan case, Conclave of Afro Asia Young Scientists: on the theme “Energy, Climate and Development”, Jawaharlal Nehru Centre for Advanced Scientific Research; Jakukur, Bangalore-560 64, India, February 11 – 13, 2010

2011

1. F. W. Nyongesa, N. Rahbar, S. K. Obwoya , J. Zimba, B. O. Aduda and W.O. Soboyejo, An Investigation of Thermal Shock in Porous Clay Ceramics, International Scholarly Research Network, ISRN Mechanical Engineering, Volume 2011, Article ID 816853, 9 pages, doi:10.5402/2011/816853

2. Kelvin Alaba Aduloju, Mohamed Basiru Shitta and Simiyu Justus, Effect of extracting solvents on the stability and performances of dye sensitized solar cell prepared using extract from Lawsonia inermis, Fundamental Journal of Modern Physics, 1(2) (2011), 133 – 268.

3. Cosmas M. Muiva, Sathiaraj S, Mwabora JM. "Thermal and Compositional defects in Chemical Spray Pyrolysed Indium Selenide (In2Se3) Thin Films: Effects on film properties." Journal of Non Crystalline Solids. 2011; 357: 3726 - 3733.

4. Muiva CM, Sathaiaraj ST, Mwabora JM. "Thermal and compositional defects in chemical spray pyrolysed indium selenide (In2Se3) thin films: Effects on film properties." Journal of Optoelectronics and Advanced Material. 2011; 13(9): 1240 - 1245.

5. Justus Simiyu, Bernard Aduda, Julius Mwabora, Electron Transport and Recombination Studies on TiO2 Dye Sensitized Solar Cells Employing Electrochemical Potential Techniques: the Effect of Film Thickness,  5th International Conference on Electroceramics, 2011 (ICE 2011) at the University of New South Wales, Sydney, Australia. 12th - 16th December 2011.

2012

1. Otakwa, R.V.M., Simiyu, J., Waita, S.M. and Mwabora, J.M. (2012), Application of Dye-Sensitized Solar Cell Technology in the Tropics: Effects of Radiation Intensity and Temperature on DSSC Performance, International Journal of Advanced Renewable Energy Research (IJARER), 1, 2 (4), pp. 17 - 25.

2. Otakwa, R.V.M., Simiyu, J., S. M. Waita and J. M. Mwabora, (2012), Application of Dye-Sensitized Solar Cell Technology in the Tropics: Effects of Air Mass on Device Performance. International Journal of Renewable Energy Research (IJRER), 2 (2), pp. 369 - 375.

3. Otakwa, R.V.M., Simiyu, J., Waita, S.M. and Mwabora, J.M. (2012), Dark J-V Characterization of a Dye-Sensitized Module. International Journal of Professional Practice (IJPP), 3, (1&2), pp. 165 - 168.

4. C.O. Ayieko, R.J. Musembi, S. M. Waita, B.O. Aduda and P.K. Jain (2012), Structural and Optical Characterization of Nitrogen Doped TiO2 Thin Films Deposited by Spray Pyrolysis on Fluorine Doped Tin Oxide (FTO) Coated Glass Slides, International Journal of Energy Engineering, 2(3), 67-72.

5. Cosmas M. Muiva, Stephen Sathiaraj, Julius M. Mwabora, Chemical Bond Approach to Optical Properties of some Flash Evaporated Chalcogenide Alloys”, European Physical Journal Applied Physics, 59, 10301p1-10301p7 (2012).

6. C. Muiva, S. Sathiaraj and J. M. Mwabora and K. Maabong, “Optical Properties of flash evaporated amorphous Se100-xInx thin films for CuInSe2 solar cell applications”, Proceedings f the IASTED conference on Power and Energy Systems, 3rd -5th September 2012, Gaborone, Botswana

7. C. Muiva, S. Sathiaraj and J. M. Mwabora “Chemical Bond approach to Crystallisation Kinetics and Thermal Stability in some Se90-xIn10Sbx Chalcogenide Glassy Alloys”, Proceedings 2nd African Materials Science and Engineering Network (AMSEN) workshop, Silver Springs Hotel, Nairobi, 21-23rd March 2012 .

8. Robinson Juma Musembi, Light Soaking Induced Increase in Conversion Efficiency in Solar Cells based on In(OH)xSy/Pb(OH)xSy. The energy and Materials Research Conference, Torremolinos, Malaga, Spain, 20th June – 22nd June 2012.

9. Thomas Nyang’onda, Analysis of Root Mean Square Roughness of Microcrystalline Silicon Thin Films Using Scanning Probe Image Processor software , International Conference of Nano Science and Technology (ICNT-12): 23-27 July, 2012, Paris-France

10. Robinson Juma Musembi, Solar PV Training Kit, a Novel Community Outreach Program in Kenya, The 1st European Physical Society Conference: Physics for Development, Brussels, Belgium, 11th October – 12th October 2012.

11. Sebastian Waita, Research Activities at the Department of Physics, Joint US-Africa Material Institute, 9th-21st Dec, Addis Ababa, Ethiopia.

12. Charles Opiyo, Ayieko ; Effect of Nitration of TiO2 Thin Film Window Layer on the Performance of TiO2/In(OH)xSy/Pb(OH)xSy Composite Solar Cell, M. Sc Thesis, University of Nairobi, 2012.

13. Alex Afred Ntilakigwa; Effects of O2 Partial Pressure and Substrate Temperature on Optical Properties of DC Magnetron Sputtered CuCrO2 and CuYO2 Thin Films, M. Sc Thesis, University of Nairobi, 2012.

14. Raphael Makokha Otakwa; M. Sc, Performance and Characterization of Dye sensitized Photovoltaic Module under Tropical Weather Conditions: The case of Nairobi, Kenya, M. Sc Thesis, University of Nairobi, 2012.

15. Paul Ajuoga, Effect of Concentration of Dopant States on Photoreactivity of Nb-doped TiO2”, M.Sc Thesis, University of Nairobi, 2012.

2013

1. Robinson Musembi, Bernard Aduda, Julius Mwabora, Marin Rusu, Konstantinos Fostiropoulos, Martha Lux-Steiner, Light Soaking Induced Increase in Conversion Efficiency of eta Solar Cell Based on In(OH)xSy/Pb(OH)xSy, Materials Sciences and Applications, 4 (2013) 718 – 722, DOI 10.4236/msa.2013.411090.

2. L.K. Munguti, R.J. Musembi, W.K. Njoroge, ZnO:Sn Deposition by Reactive Evaporation: Effects of Doping on the Electrical and Optical Properties, Elixir Thin Film Technology, 61 (2013) 17162 – 17165.

3. Robinson Musembi, Bernard Aduda, Julius Mwabora, Marin Rusu, Konstantinos Fostiropoulos, Martha Lux-Steiner, Effect of Recombination on Series Resistance in eta Solar Cell Modified with In(OH)xSy Buffer Layer, International Journal of Energy Engineering, 3 (3) (2013) 183-189, DOI:10.5923/j.ijee.20130303.09.

4. Benjamin Victor Odari, Robinson Juma Musembi, Maxwell Joel Mageto, Herick Othieno, Francis Gaitho, Mwamburi Mghendi, Valentine Muramba, Optoelectronic properties of F-co-doped PTO Thin Films Deposited by Spray Pyrolysis, American Journal of Material Science, 3 (4) (2013) 91-99, DOI:10.5923/j.materials.20130304.05

5. B.V. Odari, M. Mageto, R.J. Musembi, H. Othieno, F. Gaitho, V. Muramba, Optical and Electrical Properties of Pd Doped SnO2 Thin Films Deposited by Spray Pyrolysis, Australian Journal of Basic and Applied Sciences, 7(2) (2013) 89-98.

6. C.O. Ayieko, R. J. Musembi, S. M. Waita B. O. Aduda, P. K. Jain, , Performance of TiO2/In(OH)iSj/Pb(OH)xSy Composite ETA Solar Cell Fabricated from Nitrogen Doped TiO2 Thin Film Window Layer, International Journal of Materials Engineering, 3 (2) (2013) 11 – 16, DOI 10.5923/j.ijme.20130302.01

7. Yakub, A. Plappaly, M. Leftwich, K. Malatesta, K. C. Friedman, S. Obwoya, F. Nyongesa, A. H. Maiga, Porosity, flow and filtration characteristics of frustrum-shaped ceramic water filters, Journal of Environmental Engineering, 139 (2013) 986-994

8. Otakwa, R. V. M., Simiyu, J. and Mwabora, J. M., Dye sensitized and amorphous silicon photovoltaic devices’ outdoor performance: a comparative study, International Journal of Emerging Technology and Advanced Engineering, 3 (2013) 532

9. Otakwa R.V.M., Simiyu J., Mwabora, J.M. Dye-Sensitized and Amorphous Silicon Photovoltaic (PV) Devices’ Outdoor Performance: A Comparative Study, International Journal of Emerging Technology and Advanced Engineering, 3 (2013) 532 -538

10. Simiyu J., Waita S., Musembi R., Ogacho A., Aduda B., Promoting PV uptake and sector growth in Kenya through value added training in PV sizing, Installation and maintenance, ISES 2013, Cancun, Mexico, 3-7 Nov 2013

11. Waita S, Simiyu J, Ogacho A, A five day workshop on Solar PV Curriculum Development, Elsmere Conservation Centre, Naivasha, Kenya, 9th-13th July 2013.

12. Alex A. Ogacho, Abdelhak Belaidi, Th. Dittrich, Robinson J. Musembi, and Bernard O. Aduda, Surface Passivation of Ultrathin Nanoporous TiO2 for Photovoltaic Application, Regional Workshop on Materials Science for Energy Conversion, iThemba Labs, Cape Town, South Africa, 4 – 8 November 2013.

13. C.O. Ayieko, B.O. Aduda, R.J. Musembi, S.M. Waita, P.K. Jain Performance of TiO2/In(OH)xSy/Pb(OH)xSy Composite eta Solar Cell Fabricated from Nitrogen Doped TiO2 Thin Film Window Layer, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

14. J. N. Nguu, F W Nyongesa, R. J Musembi, B.O.Aduda, Morphological and Structural Characterization of TiO2/Nb2O5 Composite Electrode Thin Films Synthesized by Electrophoretic Deposition (EPD) Technique, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

15. A. Alfred, J.M. Mwabora, R.J. Musembi, S.M. Waita, Effects of Oxygen Partial Pressure and Substrate Temperature on Optical Properties of Sputter Deposited CuCrO2 Thin Films, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013.

16. R.V.M. Otakwa, J.M. Mwabora, and J. Simiyu, The Complementarity of Dye-Sensitized and Amorphous Silicon Photovoltaics in Field Application in the Tropics, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

17. J. Ndungu, F.W. Nyongesa, A.A. Ogacho, B.O. Aduda, Nanoporous Ceramics for Water Filtration, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

18. P. Ajuoga, A. Ogacho, J. Mwabora and B. Aduda, Niobium Doped TiO2 (Nb:TiO2) : Effects of Doping Concentration on the Optical Properties of TiO2, 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

19. Silas Mureramanzi, An investigation on the output stability and properties of photovoltaic PEC cells using semiconductor thin films of CdX(X=S,Se,Te) electrophoretically deposited on TiO2 substrate. 1st Young Scientist MSSEESA Conference of Materials Science and Solar Cell Technology, United Kenya Club, Nairobi, Kenya, 28 – 29, November 2013

20. Sebastian Waita, Justus Simiyu, Robinson Musembi, Alex Ogacho, Promoting Photovoltaic Energy in Kenya through Training, http://www.epsnews.eu/2013/03/photovoliac-energy-in-kenya, accessed March 2013.

21. Robinson Musembi, Bernard Aduda and Julius Mwabora: Effect Recombination on Series Resistance, Solar Energy for World Peace, Istanbul Lufti Kirdar Congress Centre, Instanbul, Turkey, 17th August 2013 – 19th August, 2013.

22. Justus Simiyu, Sebastian Waita, Charles Obure, Robinson Musembi, Alex Ogacho, Bernard Aduda, Custom-made, Cultural Identity blended Training in PV Sizing, Installation and Maintenance in Kenya, Solar Energy for World Peace Istanbul, Turkey, August 17 – 19, 2013

23. Justus Simiyu, Sebastian Waita, Robinson Musembi, Alex Ogacho, Bernard Aduda, Promotion of PV Uptake and Sector Growth in Kenya through Value Added Training in PV Sizing, Installation and Maintenance, 2013 ISES Solar World Congress, Cancun, Mexico, November 3 – 7, 2013

24. F. W. Nyongesa, B. O. Aduda and A. A. Ogacho, Organic binders to enhance fuel efficiency of charcoal stoves (jikos) and in water filters, Presented at the 7th International Conference of the Africa Materials Research Society (A-MRS), 8-13 December 2013, Addis Ababa, Ethiopia.

2014

1. T. N. Nyan’gonda, D. M. Mulati, and B.O. Aduda, Raman Crystallinity and Hall Effect Studies of Microcrystalline Silicon Seed Layers, JAGST 16(1) 2014, 106 – 118.

2. J. N. Nguu, R. J. Musembi, F. W. Nyongesa and B. O. Aduda, Electrophoretic Deposition of TiO2/Nb2O5 Composite Electrode Thin Films for Photovoltaic Application. Journal of Energy and Power Engineering 8 (2014) 757 – 764.

3. Mulama, A. A., Oduor A. O, Muiva C.M., Muthoka B.  2014.  Investigation of the Effect of film Thickness on the Optical Properties of Amorphous Se 85-xTe15Sbx, African Journal of Physical Sciences. 1(1): 38 - 42.

4. Mulama, A. A., Oduor A.O., Muiva C., Mwabora J.M. 2014.  Optical properties and Raman studies of amorphous Se-Bi thin films. The African Review of Physics. 9: 33 - 38.