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题名:
Broadband absorption enhancement in a-Si:H thin-film solar cells sandwiched by pyramidal nanostructured arrays
作者: Li, Chuanhao1,2; Xia, Liangping2; Gao, Hongtao2; Shi, Ruiying1; Sun, Chen1,2; Shi, Haofei3; Du, Chunlei2,3
刊名: OPTICS EXPRESS
出版日期: 2012-09-10
卷号: 20, 期号:19, 页码:A589-A596
文章类型: Article
英文摘要: A new thin-film solar cell structure with a broadband absorption enhancement is proposed. The active a-Si:H film is sandwiched by two periodic pyramidal structured layers. The upper dielectric pyramidal layer acts as matching impedance by gradual change of the effective refractive index to enhance the absorption of the active layer in the short wavelength range. The lower metallic pyramidal layer traps light by the excitation of Fabry-Perot (FP) resonance, waveguide (WG) resonance and surface plasmon (SP) mode to enhance the absorption in the long wavelength range. With the cooperation of the two functional layers, a broadband absorption enhancement is realized. The structure parameters are designed by the cavity resonance theory, which shows that the results are accordant with the finite-difference time-domain (FDTD) simulation. By optimizing, the absorption of the sandwich structure is enhanced up to 48% under AM1.5G illumination in the 350-900 nm wavelength range compared to that of bare thin-film solar cells. (C) 2012 Optical Society of America
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: OPTICAL-ABSORPTION ; DESIGN
收录类别: SCI
语种: 英语
WOS记录号: WOS:000308865600004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/2349
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China

Recommended Citation:
Li, Chuanhao,Xia, Liangping,Gao, Hongtao,et al. Broadband absorption enhancement in a-Si:H thin-film solar cells sandwiched by pyramidal nanostructured arrays[J]. OPTICS EXPRESS,2012,20(19):A589-A596.
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