The terrestrial photovoltaic market is dominated by single‐junction silicon solar cell technology. However, there is a fundamental efficiency limit at 29.4%. This is overcome by multijunction devices. Recently, a GaInP/GaAs//Si wafer‐bonded triple‐junction two‐terminal device is presented with a 33.3% (AM1.5g) efficiency. Herein, it is analyzed how this device is improved to reach a conversion efficiency of 34.1%. By improving the current matching, an efficiency of 35% (two terminals, AM1.5g) is expected.

中文翻译：

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两端子直接晶圆键合GaInP / AlGaAs // Si三结太阳能电池，AM1.5g效率为34.1％

单结硅太阳能电池技术主导着陆地光伏市场。但是，基本效率限制为29.4％。这可以通过多结器件来克服。最近，GaInP / GaAs // Si晶圆键合三结双端子器件的效率为33.3％（AM1.5g）。本文中，分析了如何改进该器件以达到34.1％的转换效率。通过改善电流匹配，可以实现35％的效率（两个端子，AM1.5g）。