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Broadband absorption enhancement in a-Si:H thin-film solar cells sandwiched by pyramidal nanostructured arrays
Li, Chuanhao1,2; Xia, Liangping2; Gao, Hongtao2; Shi, Ruiying1; Sun, Chen; Shi, Haofei; Du, Chunlei; Du, C. (cldu@cigit.ac.cn)
Source PublicationOptics Express
Volume20Issue:19Pages:A589-A596
2012
Language英语
Indexed ByEi
WOS IDWOS:000308865600004
Subtype期刊论文
AbstractA 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. © 2012 Optical Society of America.; 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. © 2012 Optical Society of America.
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Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/7261
Collection微电子装备总体研究室(四室)
Corresponding AuthorDu, C. (cldu@cigit.ac.cn)
Affiliation1. Physics Department, Sichuan University, Chengdu 610064, China
2. Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu 610209, China
3. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 401122, China
Recommended Citation
GB/T 7714
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.
APA Li, Chuanhao.,Xia, Liangping.,Gao, Hongtao.,Shi, Ruiying.,Sun, Chen.,...&Du, C. .(2012).Broadband absorption enhancement in a-Si:H thin-film solar cells sandwiched by pyramidal nanostructured arrays.Optics Express,20(19),A589-A596.
MLA Li, Chuanhao,et al."Broadband absorption enhancement in a-Si:H thin-film solar cells sandwiched by pyramidal nanostructured arrays".Optics Express 20.19(2012):A589-A596.
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