Role of the ambient oxygen on the silver thick-film contact formation for crystalline silicon solar cells

Sung Bin Cho, Kyoung Kook Hong, Joo Youl Huh, Hyun Jung Park, Ji Weon Jeong

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

In order to understand the mechanism of Ag crystallite formation at the paste/Si interface, the interfacial reactions between a Ag paste containing PbO-based glass frit and an n-type (100) Si wafer during firing at 800 °C were examined by varying the oxygen partial pressure (Po2) in the firing ambience. The formation of inverted pyramidal Ag crystallites at the glass/Si interface was attributed to the redox reaction between the Ag+ ions dissolved in the fluidized glass and the Si wafer. Without any oxygen in the firing ambience, no Ag crystallite was formed. The Po2 in the firing ambience strongly affected the size and distribution of the Ag crystallites, as well as the sintering behavior of Ag powder, via its influence on the reaction forming the Ag+ ions. The present study results demonstrated that the ambient oxygen plays a crucial role in the formation of thick-film Ag contacts for crystalline Si solar cells.

Original languageEnglish
JournalCurrent Applied Physics
Volume10
Issue number2 SUPPL.
DOIs
Publication statusPublished - 2010 Mar 1

Fingerprint

ambience
Silicon solar cells
Silver
Thick films
thick films
solar cells
silver
Oxygen
Ointments
Crystalline materials
Crystallites
Glass
crystallites
glass
oxygen
frit
wafers
Ions
Redox reactions
Surface chemistry

Keywords

  • Ag thick-film metallization
  • Glass frit
  • Interfacial reaction
  • Oxygen partial pressure
  • Silicon solar cell

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Role of the ambient oxygen on the silver thick-film contact formation for crystalline silicon solar cells. / Cho, Sung Bin; Hong, Kyoung Kook; Huh, Joo Youl; Park, Hyun Jung; Jeong, Ji Weon.

In: Current Applied Physics, Vol. 10, No. 2 SUPPL., 01.03.2010.

Research output: Contribution to journalArticle

Cho, Sung Bin ; Hong, Kyoung Kook ; Huh, Joo Youl ; Park, Hyun Jung ; Jeong, Ji Weon. / Role of the ambient oxygen on the silver thick-film contact formation for crystalline silicon solar cells. In: Current Applied Physics. 2010 ; Vol. 10, No. 2 SUPPL.
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