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Light trapping enhancement in thin film silicon solar cells with different front and back grating periodicities

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Abstract

Dual-grating structure thin-film silicon solar cells with different front and back grating periodicities are designed The geometrical parameters of both gratings are investigated. The reflection is greatly reduced by the front grating, whereas the absorption in the long wavelength is increased because of the back grating. The short circuit current of the combined structure is enhanced by 16.8% for a 1-\mu m thick c-Si layer compared with that of the conformal grating structure. The short circuit current can be further increased by creating a relative lateral displacement between the front and back gratings. The displacement results in a more remarkably enhanced absorption when the thickness of the active layer is reduced, indicating its importance in the design of ultra-thin high-efficiency solar cells.

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DOI:10.3788/col201311.120501

所属栏目:Diffraction and gratings

责任编辑:张雁

收稿日期:2013-07-17

录用日期:2013-11-05

网络出版日期:2013-12-09

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, Zihuan Xia, Yonggang Wu, Hongfei Jiao, Zhaoming Liang, Jian Zhou, "Light trapping enhancement in thin film silicon solar cells with different front and back grating periodicities," Chinese Optics Letters 11(12), 120501 (2013)

被引情况

【1】Zhou Wang,Dongyun Wan,Fuqiang Huang,Fangfang Xu. Highly surface-textured and conducting ZnO:Al films fabricated from oxygen-deficient target for Cu(In, Ga)Se2 solar cell application. Chinese Optics Letters, 2014, 12(9): 93101-93104

CrossRef返回数据

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