一种增加单结非晶硅薄膜太阳电池光吸收的结构设计

提出了一种包含增透膜和背反射层的非晶硅薄膜太阳电池结构，其中增透膜由折射率从低到高的4层介质材料组成，背反射层由三角形介质衍射光栅和一维光子晶体结构组成。利用严格耦合波理论和平面波展开法，对介质层厚度和光栅进行优化设计，数值计算了增透膜和背反射层在入射角为0°～60°之间的反射效率。结果表明,增透膜在300～750 nm波长范围内存在高透射率，背反射层在600～750 nm波长范围内存在高反射率。对于活性层厚度为700 nm的非晶硅薄膜太阳电池，在入射波的TM偏振状态下，入射角小于75°时，电池经优化后在300～750 nm波长范围内平均吸收率为95%。

Abstract

A kind of amorphous silicon(a-Si) thin film solar cell structure, which has an antireflection (AR) coating and a back reflector, is presented. The AR coating consists of four dielectric materials with refractive index from low to high. The back reflector consists of a triangle dielectric diffraction grating and a one-dimensional photonic crystal structure. The parameters of the dielectric layers and the grating are optimized by rigorous coupled wave analysis and plane wave theory method. The reflection efficiency of the AR coating and back reflector with incident angle range of 0°～60° are calculated numerically. The results show that the AR coating has high transmission within the wavelength range of 300～750 nm and the back reflector has high reflection within the wavelength range of 600～750 nm. For the a-Si thin film solar cell with 700-nm-thick active layer, with incident wave of TM polarization and incident angle which is less than 75°, the solar cell has an average absorptance of 95% after optimizing in wavelength range of 300～750 nm.

参考文献

[1] P Bermel, C Luo, L Zeng, et al.. Improving thin-film crystalline silicon solar cell efficiencies with photonic crystals [J]. Opt Express, 2007, 15(25): 16986-17000.

[2] D Y Zhou, R Biswas. Photonic crystal enhanced light-trapping in thin film solar cells [J]. J App Phys, 2008,103(9): 093102.

[3] L Zeng, Y Yi, C Y Hong, et al.. Efficiency enhancement in Si solar cells by textured photonic crystal back reflector [J]. Appl Phys Lett, 2006, 89(11): 111111.

[4] W Zhang, G G Zheng, X Y Li. Design of light trapping structures for light-absorption enhancement in thin film solar cells [J]. Optilk, 2013, 124(6): 2531-2534.

[5] G G Zheng, F L Xian, X Y Li. Enhancement of light absorption in thin film silicon solar cells with metallic grating and one-dimensional photonic crystals [J]. Chin Phys Lett, 2011, 28(5): 054213.

[6] 周舟, 周健, 孙晓玮, 等. 薄膜太阳能电池异型布拉格背反射结构设计与制作[J]. 光学学报, 2011, 31(7): 0731002.

Zhou Zhou, Zhou Jian, Sun Xiaowei, et al.. Design of an irregularly shaped DBR for thin film solar cells [J]. Acta Optica Sinica, 2011, 31(7): 0731002.

[7] S Chhajed, M F Schubert, J K Kim, et al.. Nanostructured multilayer graded-index antireflection coating for Si solar cells with broadband and omnidirectional characteristics [J]. App Phy Lett, 2008, 93(25): 251108.

[8] J Springer, A Poruba, L Mullerova, et al.. Absorption loss at nanorough silver back reflector of thin-film silicon solar cells [J]. J Appl Phys, 2004, 95(3): 1427-1429.

[9] M G Moharam, Eric B Grann, Drew A Pommet, et al.. Formulation for stable and efficient implementation of the rigorous coupled-wave analysis of binary gratings [J]. J Opt Soc Am A, 1995,12(5): 1068-1076.

[10] 孔伟金, 云茂金, 崔春玲, 等. 梯形介质膜光栅衍射特性分析[J]. 光学学报, 2008, 28(7): 1415-1419.

Kong Weijin, Yun Maojin, Cui Chunling, et al.. Diffraction property of multi-layer dielectric grating with trapezium groove [J]. Acta Optica Sinica, 2008, 28(7): 1415-1419.

[11] 陈凤翔, 汪礼胜. 宽角度硅太阳能电池减反射膜的优化设计[J]. 太阳能学报, 2008, 29(10): 1262-1266.

Chen Fengxiang, Wang Lisheng. Optimized design of antireflection coating for silicon solar cells with board angle usage [J]. Acta Energiae Solaris Sinica, 2008, 29(10): 1262-1266.

[12] 沈宏君, 卢辉东, 程学珍. 一维衍射光栅和一维光子晶体组成的硅薄膜太阳能电池背反射器[J]. 发光学报, 2012, 33(6): 633-639.

Shen Hongjun, Lu Huidong, Cheng Xuezhen. Back reflectors of thin-film silicon solar cells consisting of one-dimensional diffraction gratings and one-dimensional photonic crystal [J]. Chinese J Luminescence, 2012, 33(6): 633-639.

[13] K M Ho, C T Chan, C M Soukouli. Existence of a photonic gap in periodic dielectric structures [J]. Phys Rev Lett, 1990, 65(25): 3152-3155.

[14] J Krc, M Zeman, S L Luxembourg, et al.. Modulated photonic-crystal structures as broadband back reflectors in thin-film solar cells [J]. Appl Phys Lett, 2009, 94(15): 153501.

[15] 孔伟金, 王书浩, 魏世杰, 等. 基于严格耦合波理论的宽光谱金属介质膜光栅衍射特性分析[J]. 物理学报, 2011, 60(11): 114214.

Kong Weijin, Wang Shuhao, Wei Shijie, et al.. Diffraction property of broadband metal multi-layer dielectric gratings based on rigorous coupled-wave analysis [J]. Acta Physica Sinica, 2011, 60(11): 114214.

[16] 樊叔维, 周庆华, 李红. 槽型衍射光栅结构参数优化设计研究[J]. 光学学报, 2010, 30(11): 3133-3139.

Fan Shuwei, Zhou Qinghua, Li Hong. Research of optimization design of groove diffraction grating profile parameters [J]. Acta Optica Sinica, 2010, 30(11): 3133-3139.

卢辉东, 沈宏君, 黎磊, 剡文杰. 一种增加单结非晶硅薄膜太阳电池光吸收的结构设计[J]. 光学学报, 2013, 33(8): 0831003. Lu Huidong, Shen Hongjun, Li Lei, Yan Wenjie. A Structure Design of the Amorphous Silicon Single-Junction Jhin-Film Solar Cells for Increasing Sunlight Absorption[J]. Acta Optica Sinica, 2013, 33(8): 0831003.

一种增加单结非晶硅薄膜太阳电池光吸收的结构设计

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