Rugate filter for light-trapping in solar cells

被引：59

作者：

Fahr, Stephan ^{[1
]}

Ulbrich, Carolin ^{[2
]}

Kirchartz, Thomas ^{[3
]}

Rau, Uwe ^{[3
]}

Rockstuhl, Carsten ^{[1
]}

Lederer, Falk ^{[1
]}

机构：

[1] Inst Festkorpertheorie & Opt, D-07743 Jena, Germany

[2] Univ Stuttgart, Inst Phys Elekt, D-70569 Stuttgart, Germany

[3] Forschungszentrum Julich, IEF Photovoltaik 5, D-52425 Julich, Germany

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 13期

关键词：

D O I：

10.1364/OE.16.009332

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We suggest a design for a coating that could be applied on top of any solar cell having at least one diffusing surface. This coating acts as an angle and wavelength selective filter, which increases the average path length and absorptance at long wavelengths without altering the solar cell performance at short wavelengths. The filter design is based on a continuous variation of the refractive index in order to minimize undesired reflection losses. Numerical procedures are used to optimize the filter for a 10 mu m thick monocrystalline silicon solar cell, which lifts the efficiency above the Auger limit for unconcentrated illumination. The feasibility to fabricate such filters is also discussed, considering a finite available refractive index range. (C) 2008 Optical Society of America.

引用

页码：9332 / 9343

页数：12

共 34 条

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