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Scattering properties of ZnO gratings on Al back reflectors for thin f ilm silicon solar cells

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Abstract

Light scattering properties of back grating structures that composed of one-dimensional ZnO gratings and a flat 300-nm Al reflectors are investigated. Results show that grating structures cause an 8% reduction of the total reflectivity, as grating periods increasing from 620 to 1 435 nm, both the diffuse reflectivity and the haze parameter enhance drastically between 400 and 1 000 nm, whereas the diffraction angle at normal incidence reduce greatly, which agree with the values calculated from grating equation. It is concluded that rear gratings have the potential of scattering a substantial amount of incident light to specific angles and enlarging the optical path.

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DOI:10.3788/col201311.s10504

所属栏目:Coatings for solar cell

责任编辑:胡艳芳

收稿日期:2012-12-21

录用日期:2013-01-27

网络出版日期:2013-06-07

联系人作者:联系作者(ygwu@tongji.edu.cn)

备注:This work was supported by the National Natural Science Foundation of China (No. 60977028) and the Key Project Foundation of Shanghai (No. 09JC1413800).

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引用该论文

Renchen Liu, Yonggang Wu, Guangde Tong, Zihuan Xia, "Scattering properties of ZnO gratings on Al back reflectors for thin f ilm silicon solar cells," Chinese Optics Letters 11(s1), S10504 (2013)

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