Influence of the chemical composition in SiNx films on silver paste contact formation at silicon surface

被引：8
|
作者：
Chen, X. Y. [1 ]
Xue, W. J. [1 ]
Ban, W. Z. [1 ]
Jiang, X. L. [1 ]
Shan, W. [1 ]
机构：
[1] JA Solar, Cell R&D Ctr, Yangzhou 225000, Jiangsu, Peoples R China
来源：
SOLAR ENERGY | 2016年 / 126卷
关键词：
Silicon nitride; Contact resistance; Ag paste; Glass frits; SOLAR-CELLS; VAPOR-DEPOSITION; GLASS FRIT; ELECTRONIC-STRUCTURE; NITRIDE FILMS; AG CONTACTS; INTERFACE;
D O I：
10.1016/j.solener.2016.01.001
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：
We have studied the contact formation of silver (Ag) paste at the silicon surface as a function of chemical composition of silicon nitride films (SiNx) on the front side of crystalline Si solar cell. By tuning silicon (Si) to nitrogen (N) atomic ratio in the SiNx films deposited by PECVD, the contact resistance between Ag paste and Si surface was observed to decrease from N-rich to Si-rich condition then increase again as the chemical composition further into Si-rich. Microstructure analysis via scanning electron microscopy (SEM) imaging revealed the number and diameter of Ag particles embedded in frits are found to be responsible for the behavior of contact resistance. On the other hand, limited number of Ag crystallites on Si surface is also affecting the contact resistance on the highly Si-rich regime. We suggested SiNx films affected silver paste contact formation by modifying chemical composition and properties of interfacial frits. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：105 / 110
页数：6
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