A thermal dynamical boron getter (pp+ getter) in Fe-contaminated mass production of the boron diffused n+pp+ BSF bifacial silicon solar cells

Toshio Joge, Ichiro Araki, Tsuyoshi Uematsu, Hiroshi Nakashima, Kunihiro Matsukuma

    Research output: Contribution to journalConference articlepeer-review

    Abstract

    Thermal dynamical treatment for improving the lifetime of the p base of n+pp+ BSF bifacial silicon solar cells have been demonstrated using iron behavior parameters called pp+ getter. [1]∼[10] The SIMS for the wafers in the mass production showed a precipitated high concentration of iron region near the surface of the boron diffusion layer, and the phosphorus diffusion layer respectively. A high temperature treatment suppose to increases iron in the p base by diffusing interstitially from the precipitated region, and low temperature treatment decreases the iron over the solubility diffusing to the precipitated region. So, the last thermal treatment needs long time and the low temperature enough for improving the lifetime. The simulations and examinations on the changes of the lifetime through the cell process showed good consistency.

    Original languageEnglish
    Pages (from-to)254-257
    Number of pages4
    JournalConference Record of the IEEE Photovoltaic Specialists Conference
    Publication statusPublished - 2002
    Event29th IEEE Photovoltaic Specialists Conference - New Orleans, LA, United States
    Duration: May 19 2002May 24 2002

    All Science Journal Classification (ASJC) codes

    • Control and Systems Engineering
    • Industrial and Manufacturing Engineering
    • Electrical and Electronic Engineering

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