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Effects of CdCl2 on the electrical properties of sintered CdS films

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Abstract

CdS films on glass substrates with various amounts of CdCl2 have been prepared by coating and sintering, and their microstructure, electrical resistivity, carrier concentration and mobility have been investigated. The sintering rate is strongly increased near the melting temperature of CdCl2 and the enhancement in the sintering is via a liquid-phase sintering mechanism. Doping of chlorine also occurs during the sintering and the solubility of chlorine in CdS is of the order of 1018 cm−3 at 650° C. The electron concentration of the sintered CdS films which contained CdCl2 before sintering increases with increasing grain size. The electron mobility increases sharply with increasing average grain size due to a sharp decrease in the total trap density, which is proportional to the total grain-boundary area.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, PO Box 131, Cheongryang, Seoul, Korea

    H. G. Yang & H. B. Im

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  1. H. G. Yang
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  2. H. B. Im
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Yang, H.G., Im, H.B. Effects of CdCl2 on the electrical properties of sintered CdS films. J Mater Sci 21, 775–780 (1986). https://doi.org/10.1007/BF01117353

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  • DOI: https://doi.org/10.1007/BF01117353

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