Hexagonal sphere gratings for enhanced light trapping in crystalline silicon solar cells

被引：0

作者：

Eisenlohr, Johannes ^{[1
]}

Benick, Jan ^{[1
]}

Peters, Marius ^{[1
]}

Bläsi, Benedikt ^{[1
]}

Goldschmidt, Jan Christoph ^{[1
,2
]}

Hermle, Martin ^{[1
]}

机构：

[1] Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany

[2] Experimental Solid State Physics, Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom

来源：

Optics Express | 2014年 / 22卷 / SUPPL. 1期

关键词：

Optical data processing - Silicon solar cells - Silicon wafers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Enhanced absorption of near infrared light in silicon solar cells is important for achieving high conversion efficiencies while reducing the solar cell's thickness. Hexagonal gratings on the rear side of solar cells can achieve such absorption enhancement. Our wave optical simulations show photocurrent density gains of up to 3 mA/cm2 for solar cells with a thickness of 40 μm and a planar front side. Hexagonal sphere gratings have been fabricated and optical measurements confirm the predicted absorption enhancement. The measured absorption enhancement corresponds to a photocurrent density gain of 1.04 mA/cm2 for planar wafers with a thickness of 250 μm and 1.49 mA/cm2 for 100 μm. © 2013 Optical Society of America.

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