Abstract
This paper discusses the technology of formation of photoresistive structures based on a composite of lead selenide and lead selenite. The structures are formed by the oxidation of n-PbSe polycrystalline films. Film The surface modification mechanism of n-PbSe films in the oxidation process is analyzed by a Zeiss Merlin scanning electron microscope (SEM). The new results of the authors on the oxidation mechanism of n-PbSe, together with their earlier publications, are summarized and their consistency with each other is examined. A theoretical model (hypothesis) of the potential profile of a photosensitive heterojunction is proposed, in which each crystal of the n-PbSe film during oxidation in an atmosphere of dry air forms a continuous shell on the p-PbSeO3 surface. The hypothesis on the structural model of the photosensitive heterojunction proposed by other authors, which is based on the oxidation mechanism proposed by us, is practically confirmed in this study.
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ACKNOWLEDGMENTS
The experimental results were obtained using the equipment of the Interdisciplinary Resource Center for Nanotechnology of the Science Park of St. Petersburg State University.
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Tomaev, V.V., Stoyanova, T.V., Petrov, Y.V. et al. Study on the Photosensitivity of a Composite Based on Lead Selenide and Selenite. Glass Phys Chem 49, 486–492 (2023). https://doi.org/10.1134/S1087659623600539
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DOI: https://doi.org/10.1134/S1087659623600539