Broadband Absorption Enhancement in Thin Film Solar Cells Using Asymmetric Double-Sided Pyramid Gratings

被引：9

作者：

Alshal, Mohamed A. ^{[1
]}

Allam, Nageh K. ^{[1
]}

机构：

[1] Amer Univ Cairo, Sch Sci & Engn, Energy Mat Lab, New Cairo 11835, Egypt

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2016年 / 45卷 / 11期

关键词：

Thin film; solar cell; grating; absorption; antireflection coating; CRYSTALLINE SILICON; EFFICIENCY; DESIGN; ANTIREFLECTION;

D O I：

10.1007/s11664-016-4735-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A design for a highly efficient modified grating crystalline silicon (c-Si) thin film solar cell is demonstrated and analyzed using the two-dimensional (2-D) finite element method. The suggested grating has a double-sided pyramidal structure. The incorporation of the modified grating in a c-Si thin film solar cell offers a promising route to harvest light into the few micrometers active layer. Furthermore, a layer of silicon nitride is used as an antireflection coating (ARC). Additionally, the light trapping through the suggested design is significantly enhanced by the asymmetry of the top and bottom pyramids. The effects of the thickness of the active layer and facet angle of the pyramid on the spectral absorption, ultimate efficiency (eta), and short-circuit current density (J (sc)) are investigated. The numerical results showed 87.9% efficiency improvement over the conventional thin film c-Si solar cell counterpart without gratings.

引用

页码：5685 / 5694

页数：10

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