Characteristics of Pb-based glass frit prepared by spray pyrolysis as the inorganic binder of silver electrode for Si solar cells

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

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Pb-based glass frit, which acts as an inorganic binder of a silver electrode in Si solar cells, is directly prepared by spray pyrolysis. The optimum temperature for the preparation of a spherical-shaped glass frit with narrow size distribution was 1400 °C. The mean size and geometric standard deviation of the glass frit were 0.86 μm and 1.63, respectively. The glass transition temperature (Tg) of the glass frit prepared by spray pyrolysis was 487.2 °C. Melting of silver powders occurred at a firing temperature of 500 °C. However, a number of pores inside silver conducting films fired at a temperature of 500 °C are observed in the scanning electron microscopy (SEM) images. Silver conducting films fired at temperatures of 700 °C and 800 °C had dense structures with a small number of internal pores. The silver conducting film fired at a temperature of 800 °C had a large grain size. Glass materials were segregated between micron-sized silver grains at high firing temperatures of 700 °C and 800 °C. The specific resistance of silver conducting films made from glass frit prepared at a temperature of 1400 °C decreased from 4.5 μΩ cm to 2.6 μΩ cm.

Original languageEnglish
Pages (from-to)582-588
Number of pages7
JournalJournal of Alloys and Compounds
Volume490
Issue number1-2
DOIs
Publication statusPublished - 2010 Feb 4

Keywords

  • Chemical synthesis
  • Gas-solid reaction

ASJC Scopus subject areas

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

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