Transmission electron microscope study of screen-printed Ag contacts on crystalline Si solar cells

Myung Il Jeong, Sung Eun Park, Dong Hwan Kim, Joon Sung Lee, Yun Chang Park, Kwang Soon Ahn, Chel Jong Choi

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Microstructural and chemical properties of screen-printed Ag contacts on an n+ emitter surface in crystalline Si solar cells are investigated using a transmission electron microscope. The Pb-based glass layer, where many Ag precipitates are randomly distributed, is formed between a Ag thick film and textured Si. For both textured and nontextured Si surfaces, the Ag crystallites are epitaxially grown on Si with an abrupt interface along the {111} atomic plane. Based on high resolution electron microscopy images combined with fast Fourier transform patterns, the registry of Ag on Si driven by a geometrical matching condition leads to minimization of the effective lattice mismatch between Ag and Si, resulting in the formation of a Ag/Si epitaxial superlattice near the interface region.

Original languageEnglish
Pages (from-to)H934-H936
JournalJournal of the Electrochemical Society
Volume157
Issue number10
DOIs
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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