Ultra-lightweight and flexible inverted metamorphic four junction solar cells for space applications

IF 1.9 Q3 PHYSICS, APPLIED

EPJ Photovoltaics Pub Date : 2022-01-01 DOI:10.1051/epjpv/2022024

Malte Klitzke, J. Schön, R. H. van Leest, G. Bissels, E. Vlieg, M. Schachtner, F. Dimroth, D. Lackner

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引用次数: 1

Abstract

In this work an inverted metamorphic four junction (IMM4J) solar cell with 30.9% conversion efficiency in beginning of life conditions under the AM0 (1367 W/m2) spectrum is presented. Additionally, our newest improved IMM3J cell, consisting of Ga0.51In0.49P/GaAs/Ga0.73In0.27As subcells, with 30.6% efficiency is also shown. The IMM4J solar cells consist of Al0.05Ga0.46In0.49P/Al0.14Ga0.86As/Ga0.89In0.11As/Ga0.73In0.27As subcells and are epitaxially grown by metal organic vapor phase epitaxy (MOVPE) on a GaAs substrate. These IMM solar cells achieve power-to-mass ratios of 3 W/g or more, which is more than three times higher than standard germanium based triple or four junction space solar cells. The losses in comparison to the simulated near-term potential efficiency of 33.8% for the IMM4J are analyzed in detail. Furthermore, the irradiation behavior for 1 MeV electron fluences of 1 × 1014 e−/cm2 and 2.5 × 1014 e−/cm2 for the IMM4J cells was investigated. A roadmap to further develop this concept towards an IMM5J with a realistic begin of life (BOL) efficiency potential of 35.9% under AM0 is presented.

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用于空间应用的超轻柔性倒变质四结太阳能电池

本文介绍了一种倒置变质四结(IMM4J)太阳能电池，在AM0 (1367 W/m2)光谱下，在寿命开始条件下转换效率为30.9%。此外，我们最新的改进的IMM3J电池，由Ga0.51In0.49P/GaAs/Ga0.73In0.27As亚电池组成，效率为30.6%。IMM4J太阳能电池由Al0.05Ga0.46In0.49P/Al0.14Ga0.86As/Ga0.89In0.11As/Ga0.73In0.27As亚电池组成，采用金属有机气相外延(MOVPE)技术在GaAs衬底上外延生长。这些IMM太阳能电池的功率质量比达到3w /g或更高，比标准的锗基三结或四结空间太阳能电池高出三倍多。与模拟的IMM4J的33.8%的近期潜在效率相比，详细分析了损失。此外，研究了1 MeV、1 × 1014 e−/cm2和2.5 × 1014 e−/cm2对IMM4J细胞的辐照行为。提出了进一步将这一概念发展为在AM0条件下具有35.9%的实际寿命开始(BOL)效率潜力的IMM5J的路线图。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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