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Optical modelling of TCO based FTO/TiO2 multilayer thin films and simulation in hydrogenated amorphous silicon solar cell

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dc.contributor.authorIsoe, Wycliffe M.
dc.contributor.authorMageto, Maxwell J.
dc.contributor.authorMaghanga, Christopher M.
dc.contributor.authorMwamburi, Maurice M.
dc.contributor.authorOdari, Benjamin V.
dc.date.accessioned2024-02-01T08:18:54Z
dc.date.available2024-02-01T08:18:54Z
dc.date.issued2023-07
dc.description.abstractHydrogenated Amorphous silicon (a:Si:H) has low amounts of defects making it attractive for photovoltaic applications. To improve power conversion efficiency (PCE) of a:Si:H solar cells, this study investigated the effect of introducing FTO/TiO2 multilayer thin films into its structure to serve as antireflection coating. The multilayer thin films were characterized and optimized by optical simulations using a computer program, GLSIM (glazing simulator). The program was written in FORTRAN and implemented in MATLAB. The multi-Fresnel equations were employed to create the GLSIM program. Then using the program, together with the pairs of real and imaginary values of complex refractive index, n and k respectively, the transmittance and reflectance data of FTO/TiO2 multilayer thin films on glass substrate were computed. The optimized FTO/TiO2 multilayer thin films were then incorporated into silicon solar cell with structure glass/FTO/TiO2/n-a-Si:H/i-a-Si:H/p-a:Si:H/P+-BSF and characterized using SCAPS-1D software. The effect of varying layer thickness on the solar cell performance was also investigated. The optimized solar cell had a thickness of 100 nm, 50 nm, 900 nm, 100 nm, 10μm and 5μm for FTO, TiO2, n-a-Si:H, i-a-Si:H, p-a-Si:H and P+-BSF respectively. The device output performance were 37.96 mA/cm2, 1.34 V, 56.37% and 28.72% for Jsc, Voc, FF and η respectively showing a remarkable improvement in the solar cell performance. These results show potential of fabricating an improved hydrogenated silicon solar cell.
dc.description.sponsorshipInternational Science Programme (ISP), Uppsala University, Sweden
dc.identifier.urihttps://doi.org/10.1016/j.sciaf.2023.e01678
dc.identifier.urihttps://repository.nrf.go.ke/handle/123456789/511
dc.language.isoen
dc.publisherElsevier
dc.subjectMasinde Muliro University of Science and Technology
dc.titleOptical modelling of TCO based FTO/TiO2 multilayer thin films and simulation in hydrogenated amorphous silicon solar cell
dc.typeArticle
dspace.entity.typePublication

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