Issue 49, 2016, Issue in Progress

Influence of the properties of organic media in back-side silver pastes on the electrical performance of polycrystalline silicon solar cells

Abstract

In this paper, the best composition and ratio of solvents for the organic medium in back-side silver pastes was selected through a series of orthogonal experiments. The results showed that the volatility of the organic medium mentioned above was better than the others. The back-side silver paste prepared using this organic medium had appropriate viscosity (4.36 Pa s) and less residual ash content (0.75 wt%) when the composition of the solid substances in the organic medium was: acrylic resin 3.50 wt%, phenoxy resin 2.30 wt%, and ethyl cellulose 2.40 wt%. The properties of this paste were investigated after it was printed and further sintered to form back-side silver electrodes on solar cells. Scanning electron microscopy images showed that these back-side silver electrodes had a smoother and more dense surface, a more appropriate width and thickness, and closer contact with the silicon wafer and a larger welding tension. As a result, the photoelectric conversion efficiency of the solar cells printed by this back-side silver paste reached 18.06%.

Graphical abstract: Influence of the properties of organic media in back-side silver pastes on the electrical performance of polycrystalline silicon solar cells

Article information

Article type
Paper
Submitted
04 Apr 2016
Accepted
13 Apr 2016
First published
14 Apr 2016

RSC Adv., 2016,6, 43732-43739

Influence of the properties of organic media in back-side silver pastes on the electrical performance of polycrystalline silicon solar cells

R. Li, H. Wang, Y. Tai, J. Bai and H. Wang, RSC Adv., 2016, 6, 43732 DOI: 10.1039/C6RA08575J

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