Light localization at randomly textured surfaces for solar-cell applications

被引:51
作者
Rockstuhl, Carsten
Lederer, Falk
Bittkau, Karsten
Carius, Reinhard
机构
[1] Univ Jena, Inst Festkorpertheorie & Opt, D-07743 Jena, Germany
[2] Forschungszentrum Julich, Inst Energieforsch, D-52425 Julich, Germany
关键词
ENHANCEMENT;
D O I
10.1063/1.2800374
中图分类号
O59 [应用物理学];
学科分类号
摘要
By using a rigorous diffraction theory, the localization of light near textured zinc oxide (ZnO) surfaces is theoretically investigated and compared with experimental data obtained from scanning-near-field-optical microscopy. Although random by nature, these surfaces show well-defined geometrical features, which cause the formation of localized light patterns near the surface. Particularly, photon jets are observed to emerge from conical surface structures. Because these structures are of primary importance for applications in photovoltaics, we analyze the "real" surface topography of textured ZnO used in silicon solar cells. With this work, valuable insight is provided into the mechanism of light coupling through randomly textured interfaces. (C) 2007 American Institute of Physics.
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页数:3
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