研究目的
Investigating the performance of solar cells made with Si1-x-yGexSny or GexSn1-x alloy, focusing on conversion efficiency and device thickness reduction.
研究成果
The proposed Si1-x-yGexSny based solar cell structure demonstrates a high conversion efficiency of 19.9% with a reduced substrate thickness of 10 μm, making it a promising candidate for photovoltaic applications, especially in spacecraft and satellites. The study highlights the importance of material composition and layer thickness optimization in achieving high-performance solar cells.
研究不足
The study is based on simulation results, which may differ from actual experimental outcomes due to material imperfections and fabrication challenges. The optimization of Sn concentration is critical to avoid lattice mismatch issues.
1：Experimental Design and Method Selection:
The study involves the design and simulation of a solar cell structure using TCAD tools, incorporating Si1-x-yGexSny as the emitter, Si1-xGex as the absorber, and Si1-x-yGexSny as the base and BSF layers.
2：Sample Selection and Data Sources:
The simulation uses material parameters for Si1-x-yGexSny and Si1-xGex, with data sourced from literature and TCAD simulation tools.
3：List of Experimental Equipment and Materials:
TCAD simulation software is used for modeling and analysis.
4：Experimental Procedures and Operational Workflow:
The solar cell performance is simulated under AM
5：5 Global solar spectrum at 300K, varying parameters such as layer thickness, doping concentrations, and material compositions. Data Analysis Methods:
Performance parameters like Jsc, Voc, FF, and efficiency are calculated and compared with existing solar cell structures.
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