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首页> 外文期刊>Photovoltaics, IEEE Journal of >Investigation of Carrier Recombination Dynamics of InGaP/InGaAsP Multiple Quantum Wells for Solar Cells via Photoluminescence
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Investigation of Carrier Recombination Dynamics of InGaP/InGaAsP Multiple Quantum Wells for Solar Cells via Photoluminescence

机译:通过光致发光研究InGaP / InGaAsP多个量子阱的太阳能电池载流子复合动力学。

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摘要

The carrier recombination dynamics of InGaP/InGaAsP quantum wells is reported for the first time. By studying the photoluminescence (PL) and time-resolved PL decay of InGaP/InGaAsP multiple-quantum-well (MQW) heterostructure samples, it is demonstrated that InGaP/InGaAsP MQWs have very low nonradiative recombination rate and high radiative efficiency compared with the control InGaP sample. Along with the analyses of PL emission spectrum and external quantum efficiencies, it suggests that this is due to small confinement potentials in the conduction band but high confinement potentials in the valence band. These results explain several features found in InGaP/InGaAsP MQW solar cells previously.
机译:首次报道了InGaP / InGaAsP量子阱的载流子复合动力学。通过研究InGaP / InGaAsP多量子阱(MQW)异质结构样品的光致发光(PL)和时间分辨的PL衰减,证明与对照相比,InGaP / InGaAsP MQW具有非常低的无辐射复合率和高辐射效率InGaP样品。连同PL发射光谱和外部量子效率的分析一起,这表明这是由于导带中的限制电位较小,而价带中的限制电位较高。这些结果解释了以前在InGaP / InGaAsP MQW太阳能电池中发现的几种功能。

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