Thermodynamic consistency of sub-bandgap absorbing solar cell proposals

被引：74

作者：

Luque, A ^{[1
]}

Martí, A ^{[1
]}

Cuadra, L ^{[1
]}

机构：

[1] Univ Politecn Madrid, Inst Energia Solar, ETSIT Madrid, E-28040 Madrid, Spain

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2001年 / 48卷 / 09期

关键词：

detailed balance; entropy production; intermediate; band solar cell; multiple band solar cell; quantum well solar cell; thermodynamics;

D O I：

10.1109/16.944204

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper proves, using thermodynamic arguments, that ideal multiple quantum well (MQW) solar cells cannot exceed the efficiency of ideal ordinary solar cells unless carriers in the well are pumped by the absorption of a second photon. In this case, the cells behave identically to the intermediate band (IB) solar cell that allows for sub-band photon absorption. It is also proven that the IB solar cell complies with the second law of thermodynamics and, in this way, the theoretical potential of this cell for achieving efficiencies of 63.2% as compared to the 40.7% of ordinary cells, is confirmed.

引用

页码：2118 / 2124

页数：7

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