Fire-through Ag contact formation for crystalline Si solar cells using single-step inkjet printing

Hyun Gang Kim, Sung Bin Cho, Bo Mook Chung, Joo Youl Huh, Suk Goo Yoon

Research output: Contribution to journalArticle

4 Citations (Scopus)

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 SiN x 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 SiN x - coated Si substrate using the single-step printing of Ag ink, followed by rapid thermal annealing at 800 °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 °C for 1 min.

Original languageEnglish
Pages (from-to)3620-3623
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number4
DOIs
Publication statusPublished - 2012 Jul 6

Fingerprint

Printing
Ink
inks
printing
Solar cells
Fires
solar cells
Crystalline materials
Metals
Metallizing
Nitrates
Oxides
metal oxides
nitrates
frit
Antireflection coatings
punches
Rapid thermal annealing
antireflection coatings
Substrates

Keywords

  • Additives
  • Fire-through contact
  • Inkjet printing
  • Si solar cell

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Fire-through Ag contact formation for crystalline Si solar cells using single-step inkjet printing. / Kim, Hyun Gang; Cho, Sung Bin; Chung, Bo Mook; Huh, Joo Youl; Yoon, Suk Goo.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 4, 06.07.2012, p. 3620-3623.

Research output: Contribution to journalArticle

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