Laser sintering of Si and Ge nano-and microparticle films toward solar cells by solution process

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The laser sintering of Si particle films was studied toward a wet process manufacturing of a Si solar cell. Si particle films were formed by spin-coating from the dispersion solutions of Si nano- and microparticles in an organic solvent. The I-V characteristics of a schottky diode solar cell consisting of a Si particle film and an Au-coated PET film showed rectifying behavior and photovoltaic effect. With the aim of improving the physical and electrical properties of the Si particle films, the laser sintering of the Si particle films was investigated by changing the wavelength of laser beam using CW DPSS lasers (457, 1064 nm). In the preparation of the Si particle film, organosilicon nanocluster (OrSi) and organogermanium nanocluster (OrGe) were used as a binder polymer. The structural changes of the Si particle by laser irradiation were studied by micro-Raman spectroscopy. The peak position of the Raman band remarkably depended on the laser wavelength. The IR laser (1064 nm) sintering with a large penetration depth gave the higher quality crystal Si film than that prepared by visible laser (457 nm) sintering judging from the shift of the LO and TO phonon band from 520 cm-1 of single crystal Si.

    Original languageEnglish
    Title of host publicationLaser-Based Micro- and Nanopackaging and Assembly VI
    DOIs
    Publication statusPublished - 2012
    EventLaser-Based Micro- and Nanopackaging and Assembly VI - San Francisco, CA, United States
    Duration: 2012 Jan 242012 Jan 26

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume8244
    ISSN (Print)0277-786X

    Other

    OtherLaser-Based Micro- and Nanopackaging and Assembly VI
    Country/TerritoryUnited States
    CitySan Francisco, CA
    Period12/1/2412/1/26

    Keywords

    • Laser direct writing
    • Laser sintering
    • Photovoltaic effect
    • Rectifying behavior
    • Si microparticle
    • Si nanoparticle
    • Solar cell
    • Wet process

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering

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