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A comparison of fill factor and recombination losses in amorphous silicon solar cells on ZnO and SnO2

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  • Alkaya, A.
  • Kaplan, R.
  • Canbolat, H.
  • Hegedus, S.S.

Abstract

Effects of ZnO and SnO2 TCO (Transparent Conductive Oxide) substrate materials on hydrogenated amorphous silicon (a-Si:H) p-i-n solar cell performances and recombination kinetics have been investigated. DC and Frequency-resolved photocurrent measurements in a-Si:H p-i-n solar cells of 6 have been carried out experimentally. In particular, the I–V characteristics in the dark and light, the quantum efficiency spectra, the intensity-, bias voltage- and frequency-dependence of photocurrent were obtained. Fill factor (FF) values were determined from I–V characteristics for both types of substrate cells under various illumination levels. The exponent v in the power–law relationship, IphαGv, between generating flux density and photocurrent were determined at different bias voltages (DC) and modulation frequencies. High values of Voc (open-circuit voltage), FF, and DC exponent v for the a-Si:H p-i-n solar cell with SnO2 were obtained, but the integrated QE (quantum efficiency), the modulated exponent v were found to be low compared to cells prepared on ZnO substrates. Our results show that these parameters are sensitive to the ZnO and SnO2 substrate materials which act as a window layer allowing most of the incident light to pass into the i-layer of p-i-n cells.

Suggested Citation

  • Alkaya, A. & Kaplan, R. & Canbolat, H. & Hegedus, S.S., 2009. "A comparison of fill factor and recombination losses in amorphous silicon solar cells on ZnO and SnO2," Renewable Energy, Elsevier, vol. 34(6), pages 1595-1599.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:6:p:1595-1599
    DOI: 10.1016/j.renene.2008.11.009
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    References listed on IDEAS

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    1. Unknown, 2005. "Front Materials," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 20(2), pages 1-1.
    2. Unknown, 2005. "Front Materials," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 20(1), pages 1-1.
    3. Unknown, 2005. "Front Materials," Choices: The Magazine of Food, Farm, and Resource Issues, Agricultural and Applied Economics Association, vol. 20(4), pages 1-3.
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    Cited by:

    1. Wang, Ao & Xuan, Yimin, 2020. "Multiscale prediction of localized hot-spot phenomena in solar cells," Renewable Energy, Elsevier, vol. 146(C), pages 1292-1300.

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