Release of impurities from structural defects in polycrystalline silicon solar cells Metadata

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Title

  • Main Title Release of impurities from structural defects in polycrystalline silicon solar cells

Creator

  • Author: McHugo, S.A.
    Creator Type: Personal
    Creator Info: Lawrence Berkeley National Lab., CA (United States). Advanced Light Source
  • Author: Imaizumi, M.
    Creator Type: Personal
    Creator Info: Toyota Technological Inst., Nagoya (Japan)

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research, Washington, DC (United States)

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: California
    Additional Info: Lawrence Berkeley National Lab., CA (United States)

Date

  • Creation: 1997-04-01

Language

  • English

Description

  • Content Description: It is critical to understand the behavior of metallic impurities in polycrystalline silicon used for solar cells. These impurities significantly increase the minority carrier recombination rate and, in turn, degrade cell performance. Impurity gettering is a commonly used method to remove these impurities from the material, however, past work has suggested that impurity release from structural defects drastically limits the gettering process. Presently, there is only a limited understanding of impurity release from structural defects. In this work, a correlation between structural defects and the location of metal impurities in as-grown material is established and the release of nickel and copper from structural defects in polycrystalline silicon was studied in as-grown material and after sequential thermal treatments which dissolve the impurities into the silicon matrix. Synchrotron-based x-ray fluorescence impurity mapping with spatial resolution of {approx} 1 {micro}m, was used to determine impurity distributions after each thermal treatment.
  • Physical Description: 9 p.

Subject

  • Keyword: Copper
  • STI Subject Categories: 14 Solar Energy
  • Keyword: Nickel
  • Keyword: Gettering
  • Keyword: Correlations
  • Keyword: Silicon Solar Cells
  • Keyword: Crystal Defects
  • Keyword: Impurities
  • Keyword: Spatial Distribution
  • Keyword: Experimental Data
  • Keyword: Performance
  • Keyword: Precipitation

Source

  • Conference: Spring meeting of the Materials Research Society, San Francisco, CA (United States), 31 Mar - 4 Apr 1997

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE97007898
  • Report No.: LBNL--40417
  • Report No.: LSBL--371;CONF-970302--20
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/515591
  • Office of Scientific & Technical Information Report Number: 515591
  • Archival Resource Key: ark:/67531/metadc696114

Note

  • Display Note: OSTI as DE97007898
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