Next-generation multi-crystalline silicon solar cells: Diamond-wire sawing, nano-texture and high efficiency

被引：117

作者：

Cao, Fang

Chen, Kexun

Zhang, Jingjiao

Ye, Xiaoya

Li, Jianjiang

Zou, Shuai

Su, Xiaodong ^{[1
]}

机构：

[1] Soochow Univ, Coll Phys Optoelect & Energy, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Photovolta Res Inst, Suzhou 215006, Peoples R China

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2015年 / 141卷

关键词：

Multi-crystalline silicon solar cell; Diamond wire sawing; Nano-texture; Metal-catalyzed chemical etching; Power conversion efficiency; MULTICRYSTALLINE SILICON; FEMTOSECOND LASER;

D O I：

10.1016/j.solmat.2015.05.030

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The absence of an effective texturing technique for diamond-wire sawn multi-crystalline silicon (DWS mc-Si) solar cells has hindered commercial upgrading from traditional multi-wire slurry sawn silicon (MWSS mc-Si) solar cells. In this paper, a nano-texture technique has been developed to achieve 18.31% efficient DWS mc-Si solar cells on a pilot production line. Their unique pyramidal nanostructure, which has the most close-packed (111) surface of Si diamond crystal, not only benefits both light-trapping and electric properties but also can effectively remove the saw-marks and amorphous layer of the cells. Therefore, the short-circuit current I-sc of a nano-textured DWS mc-Si solar cell is similar to 324 mA higher than that of a micron-textured one, while its open-circuit voltage 140 does not show an evident decrease with the increase of its surface area. The technique has paved the way for the mass production of DWS mc-Si solar cells by satisfying the exact requirements of the PV industry for high efficiency and low cost. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：132 / 138

页数：7

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