Optical modeling of chalcopyrite-based tandems considering realistic layer properties

被引：15

作者：

Schmid, M. ^{[1
]}

Krc, J. ^{[2
]}

Klenk, R.

Topic, M. ^{[2
]}

Lux-Steiner, M. Ch. ^{[1
]}

机构：

[1] Free Univ Berlin, Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany

[2] Univ Ljubljana, Fac Elect Engn, Ljubljana 1000, Slovenia

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 05期

关键词：

energy gap; optical losses; solar cells; SOLAR-CELL;

D O I：

10.1063/1.3077613

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Previous models of chalcopyrite-based tandem solar cells have not taken into account the limited optical transmission of the top cell observed. We use a quantitative model derived from measured optical properties of the different layers of the top cell to re-evaluate the benefits and limitations of the tandems. Guidelines are provided for minimizing optical losses in the structure. Optimization of the bottom absorber band gap and top absorber thickness is carried out. In combination with straightforward assumptions concerning the electronic cell properties, we calculate tandem maximum efficiencies in the range of 26%-28% depending on the degree of nonideal optical absorption.

引用

页数：3

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