Comparative study of GaAs and GaInNAs/GaAs multi‐quantum well solar cells
Comparative study of GaAs and GaInNAs/GaAs multi‐quantum well solar cells
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GaAs和GaInNAs/GaAs多量子阱太阳能电池的比较研究
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
J. Roberts
中科院分区：
文献类型：
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作者：
B. Royall;N. Balkan;S. Mazzucato;H. Khalil;M. Hugues;J. Roberts
电流-电压（I-V）特性以及光谱量子效率（QE）测量在GaAs对照和GaInNAs/GaAs多量子阱（MQW）太阳能电池上在AM 1.5G光谱的照射下进行。选择GaInNAs威尔斯阱中的氮和铟成分以确保与GaAs的晶格匹配。示出的威尔斯扩展光谱响应到更长的波长，但也导致在低于GaAs带隙的波长的QE的减少。此外，由于增加的暗电流，威尔斯的添加通常导致开路电压的大幅降低。MQW电池的效率达到5%，而GaAs对照电池的效率为8.5%。
Current–voltage (I–V) characteristics together with spectral quantum efficiency (QE) measurements are performed on a GaAs control and GaInNAs/GaAs multi‐quantum well (MQW) solar cell under illumination with the AM1.5G spectrum. Nitrogen and Indium composition in the GaInNAs wells were selected as to ensure lattice matching to GaAs. The wells are shown to extend the spectral response to longer wavelengths but also cause a reduction in the QE at wavelengths below the GaAs band gap. Furthermore, the addition of wells generally causes a large decrease in open circuit voltage due to the increased dark current. The MQW cell reaches an efficiency of 5% compared to 8.5% for the GaAs control cell.