Overview and loss analysis of III–V single-junction and multi-junction solar cells
Toyota Technological Institute, Nagoya 468-8511, Japan
2 Fraunhofer Institute for Solar Energy Systems ISE, Freiburg 79110, Germany
3 University of New South Wales, Sydney 2052, Australia
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Received in final form: 26 July 2022
Accepted: 29 August 2022
Published online: 14 October 2022
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.
Key words: High-efficiency / singe-junction solar cells / multi-junction solar cells / loss analysis
© M. Yamaguchi et al., Published by EDP Sciences, 2022
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