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http://dx.doi.org/10.21218/CPR.2020.8.3.094

Thin Film Si-Ge/c-Si Tandem Junction Solar Cells with Optimum Upper Sub- Cell Structure  

Park, Jinjoo (Major of Energy and Applied Chemistry, Division of Energy & Optical Technology Convergence, Cheongju University)
Publication Information
Current Photovoltaic Research / v.8, no.3, 2020 , pp. 94-101 More about this Journal
Abstract
This study was trying to focus on achieving high efficiency of multi junction solar cell with thin film silicon solar cells. The proposed thin film Si-Ge/c-Si tandem junction solar cell concept with a combination of low-cost thin-film silicon solar cell technology and high-efficiency c-Si cells in a monolithically stacked configuration. The tandem junction solar cells using amorphous silicon germanium (a-SiGe:H) as an absorption layer of upper sub-cell were simulated through ASA (Advanced Semiconductor Analysis) simulator for acquiring the optimum structure. Graded Ge composition - effect of Eg profiling and inserted buffer layer between absorption layer and doped layer showed the improved current density (Jsc) and conversion efficiency (η). 13.11% conversion efficiency of the tandem junction solar cell was observed, which is a result of showing the possibility of thin film Si-Ge/c-Si tandem junction solar cell.
Keywords
2 terminal tandem junction solar cell; Amorphous silicon germanium; Advanced semiconductor analysis simulator; Conversion efficiency;
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Times Cited By KSCI : 2  (Citation Analysis)
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