Preparation of PbSeO3 as a new material, sensitive to the electromagnetic radiation in UV range

3rd International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures (Saint Petersburg OPEN 2016)

Tomaev, V.V.^1 ; Smolyaninov, V.D.^2 ; Stoyanova, T.V.^2 ; Egorov, S.V.^2,3

Institute of Chemistry, Saint-Petersburg State University, Saint-Petersburg

198504, Russia^1

Department of General and Applied Physics, National Mineral Resources University (Mining University), Saint-Petersburg

199106, Russia^2

Ioffe Physical-Technical Institute, Saint-Petersburg

194021, Russia^3

关键词: Electromagnetic spectra;    Lead selenide;    Mechanism of oxidation;    New technologies;    Oxidation kinetics;    Surface layers;    Visible and ultraviolet;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/741/1/012036/pdf
DOI  :  10.1088/1742-6596/741/1/012036

来源: IOP

【 摘 要 】

The new technology of the formation of photoresistive structures sensitive in ultraviolet range of electromagnetic spectrum based on lead selenide and lead selenite composite is discussed. Studies of photosensitivity were carried out using a set of LEDs in the visible and ultraviolet spectral range. Obtained structures show considerable sensitivity in ultraviolet and blue range of radiation, meanwhile that in red and yellow region of light turned to be small. The structures were formed by oxidation of PbSe crystals. Diffusion of the oxygen through the surface layer of PbSe was suggested to be a key mechanism of oxidation. Oxidation kinetics were studied by means of roentgen lines chemical shift and roentgen diffraction.