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Journal of Renewable and Sustainable Energy / Volume 1 / Issue 1 / REGULAR ARTICLES

J. Renewable Sustainable Energy 1, 013102 (2009); http://dx.doi.org/10.1063/1.3005376 (8 pages)

Flexible Cu(In,Ga)Se2 solar cells fabricated using alkali-silicate glass thin layers as an alkali source material

Shogo Ishizuka, Akimasa Yamada, Paul Fons, and Shigeru Niki

National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan

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(Received 29 August 2008; accepted 1 October 2008; published online 6 November 2008)

Flexible Cu(In,Ga)Se2 (CIGS) solar cells were fabricated using alkali-silicate glass thin layers (ASTL) as an alkali source material deposited on various flexible substrates prior to the Mo backcontact layer deposition. Control of univalent alkali metal incorporation into the CIGS layer with the use of ASTL was demonstrated regardless of the presence of other multivalent metal impurities in ASTL. Dramatic enhancement in cell efficiencies using ASTL was observed though the use of excessively thick ASTL led to a degradation in cell performance. The quantum efficiency curves of CIGS solar cells fabricated using ASTL showed enhanced absorption in the long wavelength region. The photovoltaic performance dependence on a variety of substrate materials is also discussed.

© 2009 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
    1. Device fabrication
    2. Characterization
  3. RESULTS AND DISCUSSION
    1. Alkali incorporation control into CIGS layers using SLGTF
    2. Variations in photovoltaic parameters
    3. Substrate dependence of photovoltaic performance
  4. SUMMARY

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KEYWORDS and PACS

Keywords

solar cells, ternary semiconductors, semiconductor doping, alkali metals, electric properties, absorption coefficients, visible spectra, infrared spectra

PACS

  • 84.60.Jt

    Photoelectric conversion

  • 61.72.up

    Other materials

  • 88.40.jn

    Thin film Cu-based I-III-VI2 solar cells

  • 88.40.hj

    Efficiency and performance of solar cells

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3005376

PUBLICATION DATA

ISSN

1941-7012 (print)  
1941-7012 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    P. D. Paulson, R. W. Birkmire, and W. N. Shafarman, J. Appl. Phys. 94, 879 (2003)JAPIAU000094000002000879000001.

    D. Rudmann, A. F. da Cunha, M. Kaelin, F. Kurdesau, H. Zogg, A. N. Tiwari, and G. Bilger, Appl. Phys. Lett. 84, 1129 (2004)APPLAB000084000007001129000001.

    S. Ishizuka, A. Yamada, K. Matsubara, P. Fons, K. Sakurai, and S. Niki, Appl. Phys. Lett. 93, 124105 (2008)APPLAB000093000012124105000001.

    D. Rudmann, D. Brémaud, H. Zogg, and A. N. Tiwari, J. Appl. Phys. 97, 084903 (2005)JAPIAU000097000008084903000001.


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