Fire-Through Ag Contact Formation for Crystalline Si Solar Cells Using Single-Step Inkjet Printing
- Authors
- Kim, Hyun-Gang; Cho, Sung-Bin; Chung, Bo-Mook; Huh, Joo-Youl; Yoon, Sam S.
- Issue Date
- 4월-2012
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Fire-Through Contact; Inkjet Printing; Additives; Si Solar Cell
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.4, pp.3620 - 3623
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 12
- Number
- 4
- Start Page
- 3620
- End Page
- 3623
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/108860
- DOI
- 10.1166/jnn.2012.5574
- ISSN
- 1533-4880
- Abstract
- Inkjet-printed Ag metallization is a promising method of forming front-side contacts on Si solar cells due to its non-contact printing nature and fine grid resolution. However, conventional Ag inks are unable to punch through the SiNx anti-reflection coating (ARC) layer on emitter Si surfaces. In this study, a novel formulation of Ag ink is examined for the formation of fire-through contacts on a SiNx-coated Si substrate using the single-step printing of Ag ink, followed by rapid thermal annealing at 800 degrees C. In order to formulate Ag inks with fire-through contact formation capabilities, a liquid etching agent was first formulated by dissolving metal nitrates in an organic solvent and then mixing the resulting solution with a commercial Ag nanoparticle ink at various volume ratios. During the firing process, the dissolved metal nitrates decomposed into metal oxides and acted in a similar manner to the glass frit contained in Ag pastes for screen-printed Ag metallization. The newly formulated ink with a 1 wt% loading ratio of metal oxides to Ag formed finely distributed Ag crystallites on the Si substrate after firing at 800 degrees C for 1 min.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
- College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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