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Numerical investigation on the enhanced carrier collection efficiency of Ga-face GaN/InGaN p-i-n solar cells with polarization compensation interlayers

机译:带有极化补偿夹层的Ga面GaN / InGaN p-i-n太阳能电池提高的载流子收集效率的数值研究

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摘要

The impact of the polarization compensation InGaN interlayer between the heterolayers of Ga-face GaN/InGaN p-i-n solar cells is investigated numerically. Because of the enhancement of carrier collection efficiency, the conversion efficiency is improved markedly, which can be ascribed to both the reduction of the polarization-induced electric field in the InGaN absorption layer and the mitigation of potential barriers at heterojunctions. This beneficial effect is more remarkable in situations with higher polarization, such as devices with a lower degree of relaxation or devices with a higher indium composition in the InGaN absorption layer.
机译:数值研究了Ga面GaN / InGaN p-i-n太阳能电池异质层之间极化补偿InGaN中间层的影响。由于载流子收集效率的提高,转换效率显着提高,这既可以归因于InGaN吸收层中极化感应电场的减小,也可以归因于异质结处势垒的减轻。在极化程度较高的情况下(例如,InGaN吸收层中弛豫度较低的器件或铟成分较高的器件),此有益效果会更加明显。

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