首页> 外文会议>IEEE world conference on photovoltaic energy conversion;WCPEC;IEEE photovoltaic specialists conference;PVSC >Epitaxial lift-off in photovoltaics:ultra thin AI_(0.2)Ga_(0.8)As cell in a mechanically stacked (AI,Ga)As/Si tandem
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Epitaxial lift-off in photovoltaics:ultra thin AI_(0.2)Ga_(0.8)As cell in a mechanically stacked (AI,Ga)As/Si tandem

机译:光伏中的外延剥离:机械堆叠(AI,Ga)As / Si串联的超薄AI_(0.2)Ga_(0.8)As电池

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摘要

The potential of high conversion efficiency of solar energy through the combination of AI_(0.2)Ga_(0.8)As and Si cells is illustrated by a mechanically stacked tandem using for the first time the epitaxial lift-off (ELO) technique to remove the top cell from its substrate. The selective etching of the GaAs substrate provides efficient light transmission to the bottom cell. Photoluminescence decay experiments show also that substrate removal enhances photon recycling effects. The measured efficiency of the Al_(0.2)Ga_(0.8)As/Si tandem reaches 21% AM1.5.
机译:通过AI_(0.2)Ga_(0.8)As和Si电池相结合的太阳能高转换效率的潜力通过首次使用外延剥离(ELO)技术去除顶部的机械堆叠串联来说明细胞从其底物。 GaAs基板的选择性刻蚀可有效地将光传输到底部电池。光致发光衰减实验还表明,去除底物可增强光子回收效果。 Al_(0.2)Ga_(0.8)As / Si串联的测量效率达到21%AM1.5。

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