Toward Omnidirectional Light Absorption by Plasmonic Effect for High-Efficiency Flexible Nonvacuum Cu(In,Ga)Se2 Thin Film Solar Cells

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• 作者：Shih-Chen Chen ; Yi-Ju Chen ; Wei Ting Chen ; Yu-Ting Yen ; Tsung Sheng Kao ; Tsung-Yeh Chuang ; Yu-Kuang Liao ; Kaung-Hsiung Wu ; Atsushi Yabushita ; Tung-Po Hsieh ; Martin D. B. Charlton ; Din Ping Tsai ; Hao-Chung Kuo ; Yu-Lun Chueh
• 刊名：ACS Nano
• 出版年：2014
• 出版时间：September 23, 2014
• 年：2014
• 卷：8
• 期：9
• 页码：9341-9348
• 全文大小：574K
• ISSN：1936-086X

文摘

We have successfully demonstrated a great advantage of plasmonic Au nanoparticles for efficient enhancement of Cu(In,Ga)Se₂(CIGS) flexible photovoltaic devices. The incorporation of Au NPs can eliminate obstacles in the way of developing ink-printing CIGS flexible thin film photovoltaics (TFPV), such as poor absorption at wavelengths in the high intensity region of solar spectrum, and that occurs significantly at large incident angle of solar irradiation. The enhancement of external quantum efficiency and photocurrent have been systematically analyzed via the calculated electromagnetic field distribution. Finally, the major benefits of the localized surface plasmon resonances (LSPR) in visible wavelength have been investigated by ultrabroadband pump鈥損robe spectroscopy, providing a solid evidence on the strong absorption and reduction of surface recombination that increases electron鈥揾ole generation and improves the carrier transportation in the vicinity of pn-juction.

Keywords:

solar Cell; Cu(In,Ga)Se₂; omnidirectional light absorption; plasmonic effect; nanoparticles; flexible