Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell

doi:10.1088/1674-1056/22/4/045202

中国物理B ›› 2013, Vol. 22 ›› Issue (4): 45202-045202.doi: 10.1088/1674-1056/22/4/045202

Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell

陈凤翔, 汪礼胜, 许文英

Department of Physics Science and Technology, Wuhan University of Technology, Wuhan 430070, China

收稿日期:2012-07-18 修回日期:2012-10-11 出版日期:2013-03-01 发布日期:2013-03-01
基金资助:
Project supported by the Fundamental Research Funds for the Central Universities (Grant Nos. 2011-Ia-002 and 2012-Ia-031).

Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell

Chen Feng-Xiang(陈凤翔), Wang Li-Sheng(汪礼胜), Xu Wen-Ying (许文英)

Department of Physics Science and Technology, Wuhan University of Technology, Wuhan 430070, China

Received:2012-07-18 Revised:2012-10-11 Online:2013-03-01 Published:2013-03-01
Contact: Chen Feng-Xiang E-mail:phonixchen79@yahoo.com.cn
Supported by:
Project supported by the Fundamental Research Funds for the Central Universities (Grant Nos. 2011-Ia-002 and 2012-Ia-031).

摘要/Abstract

摘要： Thin film solar cells have potentials to significantly reduce the cost of photovoltaics. Light trapping is crucial to such a thin film silicon solar cell because of a low absorption coefficient due to its indirect band gap. In this paper, we investigate the suitability of surface plasmon resonance Ag nanoparticles for enhancing optical absorption in the thin film solar cell. For evaluating the transmittance capability of Ag nanoparticles and the conventional antireflection film, an enhanced transmittance factor is introduced. We find that under the solar spectrum AM1.5, the transmittance of Ag nanoparticles with radius over 160 nm is equivalent to that of conventional textured antireflection film, and its effect is better than that of the planar antireflection film. The influence of the surrounding medium is also discussed.

关键词: transmittance, surface plasmon resonance, Ag nanoparticles, thin film solar cells

Abstract: Thin film solar cells have potentials to significantly reduce the cost of photovoltaics. Light trapping is crucial to such a thin film silicon solar cell because of a low absorption coefficient due to its indirect band gap. In this paper, we investigate the suitability of surface plasmon resonance Ag nanoparticles for enhancing optical absorption in the thin film solar cell. For evaluating the transmittance capability of Ag nanoparticles and the conventional antireflection film, an enhanced transmittance factor is introduced. We find that under the solar spectrum AM1.5, the transmittance of Ag nanoparticles with radius over 160 nm is equivalent to that of conventional textured antireflection film, and its effect is better than that of the planar antireflection film. The influence of the surrounding medium is also discussed.

Key words: transmittance, surface plasmon resonance, Ag nanoparticles, thin film solar cells

中图分类号: (Emission, absorption, and scattering of particles)

52.25.Tx

88.40.jj (Silicon solar cells) 88.40.fc (Modeling and analysis)

陈凤翔, 汪礼胜, 许文英. Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell[J]. 中国物理B, 2013, 22(4): 45202-045202.

Chen Feng-Xiang(陈凤翔), Wang Li-Sheng(汪礼胜), Xu Wen-Ying (许文英). Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell[J]. Chin. Phys. B, 2013, 22(4): 45202-045202.

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Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell

Enhanced optical absorption by Ag nanoparticles in thin film Si solar cell

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