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Journal of Renewable and Sustainable Energy / Volume 4 / Issue 1 / SPECIAL TOPIC: SELECTED PAPERS FROM THE PHOTOVOLTAIC TECHNICAL CONFERENCE, AIX EN PROVENCE, FRANCE, 2011

J. Renewable Sustainable Energy 4, 011604 (2012); http://dx.doi.org/10.1063/1.3670408 (8 pages)

The study of loss kinetics of current carriers in copper-indium-gallium selenide by microwave photoconductivity method

G. F. Novikov1, E. V. Rabenok1, M. J. Jeng2, and L. B. Chang2

1Institute of Problems of Chemical Physics, RAS, Chernogolovka, Moscow region 142432, Russia
2Department of Electronic Engineering and Green Technology Research Center, Chang-Gung University, 259 WenHwa 1st Road, Kweishan-Taoyuan 333, Taiwan

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(Received 22 July 2011; accepted 16 November 2011; published online 8 February 2012)

This study investigated how stoichiometry affects processes associated with current carriers by undertaking a kinetics investigation of electron loss processes in the copper-indium-gallium selenide (CIGS) samples prepared by PVD and sol-gel methods. Owing to these processes, the current carriers generated by light can be trapped or recombined after a thermalization process and fail to reach electrodes during their lifetime and adversely impact the photovoltaic performance of solar elements. The microwave photoconductivity method provides an effective means of obtaining data on the lifetime and energy distribution of traps for current carriers. Experimental results indicate that the free electron lifetimes in the best samples prepared in both methods are approximately the same, yet decrease with a decline in stoichiometry.

© 2012 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
  3. RESULTS AND DISCUSSION
    1. Sputtering and selenization samples
    2. Sol-gel synthesized samples
  4. CONCLUSIONS

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KEYWORDS, PACS, and IPC

Keywords

copper compounds, gallium compounds, indium compounds, photoconductivity, solar cells, sol-gel processing, stoichiometry, ternary semiconductors, thermal analysis

PACS

  • 88.40.H-

    Solar cells (photovoltaics)

  • 81.70.Pg

    Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis

  • 61.66.Bi

    Elemental solids

  • 61.66.Dk

    Alloys

International Patent Classification (IPC)

  • H01L27/142

    Energy conversion devices

  • H01L31/04

    Adapted as conversion devices

  • H02N6/00

    Generators in which light radiation is directly converted into electrical energy

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3670408

PUBLICATION DATA

ISSN

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.
    R. J. Deri and J. P. Spoonhower, Phys. Rev. B 25, 2821 (1982).

    M. Nishitani, T. Negami, N. Kohara, and T. Wada J. Appl. Phys. 82, 3572 (1997)JAPIAU000082000007003572000001.

    R. J. Deri and J. P. Spoonhower, Appl. Phys. Lett. 43(1), 65 (1983)APPLAB000043000001000065000001.


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