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 journalArticlepeer-review

    27 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
    • Condensed Matter Physics
    • Materials Chemistry
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Renewable Energy, Sustainability and the Environment

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