期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 92, 期 9, 页码 1011-1015出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2008.02.032
关键词
screen printing; silver contact; glassy-phase; crystalline silicon; solar cell
资金
- Bureau of Energy (MOEA) [95-DO132]
The interface structure of screen-printed silver contacts on a crystalline silicon solar cell has been studied by transmission electron microscopy (TEM). TEM results confirmed that the glassy-phase plays an important role in contact properties. There are at least three different microstructures present in optimal fired contacts. The location where silver-bulk directly contacts silicon is observed through SEM, and this is actually a very thin glass layer in between. In addition, high-density silver embryos on silicon were found for samples fired optimally. The results presented in this study suggest that Ag-bulk/thin-glass-layer/Si contact is the most decisive path for current transportation. (C) 2008 Elsevier B.V. All rights reserved.
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