Pb-free glass frits prepared by spray pyrolysis as inorganic binders of Al electrodes in Si solar cells

Jang Heui Yi, Hye Young Koo, Jung Hyun Kim, You Na Ko, Young Jun Hong, Yun Chan Kang, Hye Moon Lee

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Pb-free glass frits prepared by spray pyrolysis for Al electrodes were of fine size, spherical morphology and dense structure. Their mean size and geometric standard deviation when prepared at 1,200 °C were 1.0 μm and 1.4, respectively. Their glass transition temperature (Tg) was 374 °C. An Al electrode formed from Al paste with glass frits had a dense structure and good adhesion to the Si substrate. It had a well-developed back-surface field layer of 17.5 μm thickness. Al electrodes formed from Al paste without glass frits had sheet resistances between 21 and 32 mΩ sq-1 as the firing temperature changed from 600 to 900 °C. This compared with values from electrodes formed with frits that decreased from 20 to 7 mΩ sq-1 over the same range of firing temperatures.

Original languageEnglish
Pages (from-to)6325-6331
Number of pages7
JournalJournal of Alloys and Compounds
Volume509
Issue number21
DOIs
Publication statusPublished - 2011 May 26
Externally publishedYes

Keywords

  • Aluminum electrode
  • Glass material
  • Solar cell
  • Spray pyrolysis

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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