3.8 Article

Overview and loss analysis of III-V single-junction and multi-junction solar cells

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EPJ PHOTOVOLTAICS
卷 13, 期 -, 页码 -

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EDP SCIENCES S A
DOI: 10.1051/epjpv/2022020

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High-efficiency; singe-junction solar cells; multi-junction solar cells; loss analysis

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This paper reviews the progress of III-V compound single-junction and multi-junction solar cells, and presents analysis results on major losses in III-V compound materials and multi-junction solar cells. The study shows the high potential efficiency of GaAs single-junction and III-V multi-junction solar cells, but further improvements are needed for practical efficiency.
The development of high-performance solar cells offers a promising pathway toward achieving high power per unit cost for many applications. Because state-of-the-art efficiencies of single-junction solar cells are approaching the Shockley-Queisser limit, the multi-junction (MJ) solar cells are very attractive for high-efficiency solar cells. This paper reviews progress in III-V compound single-junction and MJ solar cells. In addition, analytical results for efficiency potential and non-radiative recombination and resistance losses in III-V compound single-junction and MJ solar cells are presented for further understanding and decreasing major losses in III-V compound materials and MJ solar cells. GaAs single-junction, III-V 2-junction and III-V 3-junction solar cells are shown to have potential efficiencies of 30%, 37% and 47%, respectively. Although in initial stage of developments, GaAs single-junction and III-V MJ solar cells have shown low ERE values, ERE values have been improved as a result of several technology development such as device structure and material quality developments. In the case of III-V MJ solar cells, improvements in ERE of sub-cells are shown to be necessary for further improvements in efficiencies of MJ solar cells.

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