Profile - MR. NJEMA GEORGE GICHANGA

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MR. NJEMA GEORGE GICHANGA

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Staff Information

PERSONAL DETAILS

Designation: SENIOR TECHNICAL ASSISTANT
Corporate Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Job Category: Non-Teaching
Division / Faculty: Division of Academic Affairs
Directorate / Dept: DEPT. OF CHEMISTRY
Section: LABORATORY

SUMMARY

: An experienced Analytical Chemist with comprehensive training in Laboratory Technology and Management, supported by more than 15 years of practical expertise. Committed to sharing practical insights with laboratory technologists to improve education and push forward scientific exploration. Skilled in teaching Analytical Chemistry, Inorganic Chemistry, Laboratory Practice, and Laboratory Management.

ACADEMIC QUALIFICATIONS

Msc in Chemistry, Egerton University, Kenya

Bsc chemistry, Egerton University, Kenya

Diploma in Analytical Chemistry., Murang’a university collage

FIELDS OF SPECIALIZATION

Analytical Chemistry

Computational Chemistry /Physical Chemistry

Green Energy

PROFESSIONAL QUALIFICATIONS

August 2013 Lab safety, procurement and record keeping Ministry of education smase

June 2010 Drugs and drug abuse, HIV and Aids, cataloguing and store management, public relations and work ethics

Ministry of education smase D.P.C

May 2008 Senior first aid course Kenya Red Cross Society

WORK EXPERIENCE

2015 to date Egerton University, Chemistry Dept., Senior Technical Assistant

2013-2015 Kanorero secondary school Technologist, Teacher

2010-2013 Gikoe secondary school Technician, Teacher.

RESEARCH INTERESTS

I aspire to enhance the progression of sustainable energy technologies by conducting thorough scientific research in the field of photovoltaics.

RESEARCH PROJECT

2022 to date Progressing Photovoltaic Technologies and Perovskite Materials: Paving the Way for a Sustainable Energy Outlook

Fabrication of thin film-perovskite solar cells and characterizing them by Raman Spectroscopy,AFM,TGA and FTIR

LIST OF PUBLICATIONS

George G. Njema and Joshua K. Kibet* (2023) "A Review of the Technological Advances in the Design of Highly Efficient Perovskite Solar Cells" International Journal of Photoenergy, Volume 2023, https://doi.org/10.1155/2023/3801813

2.      Elizabeth K. Katunge, George G. Njema and Joshua K. Kibet* (2023) "Theoretical analysis of the electrical characteristics of lead-free formamidinium tin iodide solar cell", IET Optoelectronics, https://dx.doi.org/10.1049/ote2.12104

3.      Njema, G.G., et al., Numerical optimization of interface engineering parameters for a highly efficient HTL-free perovskite solar cell. Materials Today Communications, 2024: p. 108957.DOI https://doi.org/10.1016/j.mtcomm.2024.108957- In press

4.      Njema, G.G., et al., Numerical Investigation of a Highly Efficient Hole Transport Layer-Free Solid-State Dye-Sensitized Solar Cell Based on N719 Dye. Journal of Electronic Materials, 2024: p. 1-16. DOIhttps://doi.org/10.1007/s11664-024-11068-y

       5.   Njema, G.G., J.K. Kibet, and S.M. Ngari, A review of interface engineering characteristics for high performance perovskite solar cells. Measurement: Energy, 2024: p. 100005. https://doi.org/10.1016/j.meaene.2024.100005

      6. Njema, G.G., et al., Numerical simulation of a highly efficient perovskite solar cell based on FeSi2 photoactive layer. Nano Select, 2024: p. 2400020. DOI: 10.1002/nano.202400020

     7. Njema, G.G., R.B.O. Ouma, and J.K. Kibet, A review on the recent advances in battery development and energy storage technologies. Journal of Renewable Energy, 2024. 2024(1): p. 2329261. https://doi.org/10.1155/2024/2329261

      8. Njema, G.G., et al., Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye. IET Optoelectronics, 2024. https://doi.org/10.1049/ote2.12118

      9. Njema, G.G., J.K. Kibet, and S.M. Ngari, Performance optimization of a novel perovskite solar cell with power conversion efficiency exceeding 37% based on methylammonium tin iodide. Next Energy, 2025. 6: p. 100182. https://doi.org/10.1016/j.nxener.2024.100182

      10. Njema, G.G. and J.K. Kibet, A review of chalcogenide-based perovskites as the next novel materials: Solar cell and optoelectronic applications, catalysis and future perspectives. Next Nanotechnology, 2025. 7: p. 100102. https://doi.org/10.1016/j.nxnano.2024.100102

      11. Njema, G.G. and J.K. Kibet, A review of novel materials for nano-photocatalytic and optoelectronic applications: recent perspectives, water splitting and environmental remediation. Progress in Engineering Science, 2024: p. 100018. https://doi.org/10.1016/j.pes.2024.100018

      12. Njema, G.G., J.K. Kibet, and S.M. Ngari, Advancements in the photovoltaic optimization of a high performance perovskite solar cell based on graphene oxide (GO) hole transport layer. Next Research, 2024: p. 100055. https://doi.org/10.1016/j.nexres.2024.100055

      13. Njema, G.G., et al., Modelling and Numerical Evaluation of Photovoltaic Parameters of a Highly Efficient Perovskite Solar Cell Based on Methylammonium Tin Iodide. Chemistry–A European Journal: p. e202403192. https://doi.org/10.1002/chem.202403192

CONFERENCES & INVITED PRESENTATIONS

EXHIBITION AT Egerton University15th Biennial Interntional Conference at ARC Hotel.
Theme:Research for innorvative solutions in the 21st Century.
Research and Extension ,Call for proposals 2023/24
Theme:Innovation for improved productivity,wealth creation and quality of life
Participated and represented Egerton university inNakuru ASK Show held in July 2024
Fabrication and characterization of thin film solar cells using AFM,TGA,FTIR and Raman Spectroscopy at University of Fort Hare in Alice,South Africa and presentation between 14th October 2024 to 28th October 2024.

MR. NJEMA GEORGE GICHANGA

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