Browsing by Author "Awino, Celline"
Now showing items 1-6 of 6
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A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution
Nyagisera, Robert Nyakundi; Wamalwa, Dismas; Rapando, Bernard; Awino, Celline; Mageto, Maxwell (Astronomy, 2024-03-12)This paper explores the fundamental cosmological principle, with a specific focus on the homogeneity and isotropy assumptions inherent in the Friedmann model that underpins the standard model. We propose a modified redshift ... -
Indium decorated nanoporous Ag as an efficient catalyst for enhanced CO2 electroreduction
Barasa, Godfrey Okumu; Awino, Celline; Li, Canglong; Agumba, John Onyango; Okoth, Kevin Otieno; Magero, Denis (2022-07)Development of bimetallic nanoporous structures is of great importance for their energy and environmental applications due to their superior catalytic properties resulting from their higher surface-to-volume ratio, excellent ... -
Investigation of Structural and Electronic Properties of CH3NH3PbI3 Stabilized by Varying Concentrations of Poly(Methyl Methacrylate) (PMMA)
Awino, Celline; Odari, Victor; Dittrich, Thomas; Prajongtat, Pongthep; Sakwa, Thomas; Rech, Bernd (MDPI, 2017-05-26)Studies have shown that perovskites have a high potential of outdoing silicon based solar cells in terms of solar energy conversion, but their rate of degradation is also high. This study reports on improvement on the ... -
Light induced degradation of the transport length of CH3NH3PbI3 studied by modulated surface photovoltage spectroscopy after Goodman
Awino, Celline; Barasa, Godfrey; Odari, Victor (Science Direct, 2020-02)Transport length is one of the most important parameters of any absorber material in a solar cell. It affects the design and performance of solar cells given that it determines the photogeneration of charge carriers in the ... -
Numerical study of lead free CsSn0.5Ge0.5I3 perovskite solar cell by SCAPS-1D
Nalianya, Milimo Amos; Awino, Celline; Barasa, Henry; Odari, Victor; Gaitho, Francis; Omogo, Benard; Mageto, Maxwell (Science Direct, 2021-12)Lead free perovskite solar cells (PCS) are becoming a distinctly predominant area of study due to the toxicity and stability hurdles of the lead halide perovskite. Current lead-free perovskites are also plagued with low ... -
Thickness Dependence of Window Layer on CH3NH3PbI3-XClX Perovskite Solar Cel
Isoe, Wycliffe; Mageto, Maxwell; Maghanga, Christopher; Mwamburi, Maurice; Odari, Victor; Awino, Celline (International Journal of Photoenergy, 2020-07-28)CH3NH3PbI3-xClx has been studied experimentally and has shown promising results for photovoltaic application. To enhance its performance, this study investigated the effect of varying thickness of FTO, TiO2, and CH3NH3PbI3-xClx ...