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Influence of as-deposited conductive type on sensitization process of PbSe films

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Abstract

The as-grown n- and p-type polycrystalline PbSe thin films are fabricated by vapor phase deposition using substrate temperature regulation. The surface polycrystalline structures and photoelectric properties of n- and p-type polycrystalline PbSe films are provided. Surface composition of n-type-sensitized PbSe film has been analyzed according to X-ray photoelectron spectroscopy results. The oxygen roles in n- and p-type PbSe polycrystalline films during the sensitization process are studied experimentally, respectively. The dependence of sensitized photoelectric performance on the initial conductive state has been firstly observed and discussed, as we know presently. It is revealed that oxygen can trigger photo-response in the sensitization process for n-type PbSe film, but not for p-type. These discussions may be useful for understanding the sensitization mechanism of lead salt materials.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China under Grant No. 61505166, Natural Science Basic Research Plan in Shaanxi Province of China under Program No. 2015JQ6244 and the Fundamental Research Funds for the Central Universities under Grant No. 3102015ZY098.

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Authors and Affiliations

  1. Shaanxi Key Laboratory of Optical Information Technology, School of Science, Northwestern Polytechnical University, Xi’an, 710072, China

    Hao Yang, Lei Chen, Jianbang Zheng, Kai Qiao & Xiaojiang Li

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  1. Hao Yang
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  2. Lei Chen
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  3. Jianbang Zheng
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  4. Kai Qiao
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  5. Xiaojiang Li
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Correspondence to Hao Yang.

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Yang, H., Chen, L., Zheng, J. et al. Influence of as-deposited conductive type on sensitization process of PbSe films. Appl. Phys. A 122, 710 (2016). https://doi.org/10.1007/s00339-016-0226-1

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