Dipolar and Quadrupolar Modes of Si02/Au Nanoshell Enhanced Light Trapping in Thin Film Solar Cells

BAI Yi-Ming; WANG Jun; CHEN Nuo-Fu; YAO Jian-Xi; ZHANG Xing-Wang; YIN Zhi-Gang; ZHANG Han; HUANG Tian-Mao

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Dipolar and Quadrupolar Modes of Si02/Au Nanoshell Enhanced Light Trapping in Thin Film Solar Cells

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@@ Dipolar and quadrupolar resonance wavelengths of SiO2/Au nanoshell surface plasmons are designed at 560nm to enhance the light trapping in thin film solar cells.In order to quantitatively describe the light trapping effect,the forward-scattering efficiency(FSE)and the light trapping efficiency(LTE) are proposed by considering the light scattering direction of SiO2/Au nanoshells.Based on the Mie theory, the FSE and the LTE are calculated for SiO2/Au nanoshells of different dimensions, and the contributions of the dipolar and quadrupolar modes to the light trapping effect are analyzed in detail.When the surface coverage of nanoshells is 5%, the LTEs are 21.7% and 46.9% for SiO2/Au nanoshells with sizes of(31 nm, 69nm) and(53nm, 141 nm), respectively.The results indicate that the SiO2/Au nanoshell whose quadrupolar mode peak is designed to the strongest solar energy flux density of the solar spectrum facilitates the further enhancement of light harvesting in thin film solar cells.

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《中国物理快报：英文版》 |2011年第8期|277-280|共4页
作者
BAI Yi-Ming; WANG Jun; CHEN Nuo-Fu; YAO Jian-Xi; ZHANG Xing-Wang; YIN Zhi-Gang; ZHANG Han; HUANG Tian-Mao;
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School of Renewable Energy Engineering, North China Electric Power University, Beijing 102206;

National Engineering Research Center for Optoelectronic Devices, Institute of Semiconductors,Chinese Academy of Sciences, PO Box 912, Beijing 100083;

School of Renewable Energy Engineering, North China Electric Power University, Beijing 102206;

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences,PO Box 912, Beijing 100083;

School of Renewable Energy Engineering, North China Electric Power University, Beijing 102206;

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences,PO Box 912, Beijing 100083;

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences,PO Box 912, Beijing 100083;

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences,PO Box 912, Beijing 100083;

Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences,PO Box 912, Beijing 100083;

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Dipolar and Quadrupolar Modes of Si02/Au Nanoshell Enhanced Light Trapping in Thin Film Solar Cells

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