Oscar Kwame Segbefia

• Photovoltaics
• Photocatalysis
• Biofuels

Oscar is passionate about the discovery of cost-effective apposite materials for photovoltaic applications, especially for:

• solar cells' efficiency
• dielectric passivation coatings for solar cells
• organic photovoltaics
• photocatalysis, and
• biodiesel production

The effect of cracks in photovoltaic applications cannot be overemphasized. Cracks lead to power losses and catalyze most fault and failure modes in solar cells and modules. Most at times, these relate to encapsulants’ delamination and discolouration, hotspots, snail trails, moisture ingress, etc. Environmental and climatic stressors have been identified as the major denominator for defects (cracks) formation in photovoltaic cells and components when modules are in the field. Therefore, understanding the development of cracks in photovoltaic plants in the field and when these cracks become just critical to power degradation is a key to forecasting the durability and reliability of photovoltaic modules over their useful lifetime and ensures monitoring and timely mitigation of fault and failure modes in photovoltaic plants. My research focusses on the effects of solar cell microcracks on the degradation profiles of solar cells…

Research Group:

• Faculty of Engineering and Science
  • Department of Engineering Sciences
    • Energy Materials Group
      • Photovoltaics cluster

Tulashie, S. K., Kalita, P., Kotoka, F., Segbefia, O. K., & Quarshie, L. (2018). Biodiesel production from shea butter: A suitable alternative fuel to premix fuel. Materialia, 3, 288-294  https://doi.org/10.1016/j.mtla.2018.08.038

Eidelman, K., Gudkov, D., Segbefia, O., Ageev, E., Krivonosov, A., & Matuhina, A. (2017, November). Evolution of size distribution and structure of Si and SiO2 nanoparticles: laser-assisted formation and fragmentation. In Journal of Physics Conference Series (Vol. 917, No. 3)   10.1088/1742-6596/917/3/032027