Influence of the properties of organic media in back-side silver pastes on the electrical performance of polycrystalline silicon solar cells. Issue 49 (3rd May 2016)

• Record Type: Journal Article
• Authors: Li, Ruixiao; Wang, Hanying; Tai, Yuping; Bai, Jintao; Wang, Hui
• Is Part Of: RSC advances. Volume 6:Issue 49(2016)
• Page Start: 43732
• Page End: 43739
• Publication Date: 2016-05-03
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra08575j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The best composition and ratio of solvents for the organic medium in back-side silver pastes was selected through a series of orthogonal experiments. 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%.