Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Electron-Beam Induced Nanostructuring on Surface Properties and Radioluminescence of ZnS:Cu,Br Phosphors

Version 1 : Received: 25 October 2022 / Approved: 28 October 2022 / Online: 28 October 2022 (10:06:46 CEST)

How to cite: Zelenina, E. V.; Bakhmetyev, V.; Sychov, M. M. Effect of Electron-Beam Induced Nanostructuring on Surface Properties and Radioluminescence of ZnS:Cu,Br Phosphors. Preprints 2022, 2022100454. https://doi.org/10.20944/preprints202210.0454.v1 Zelenina, E. V.; Bakhmetyev, V.; Sychov, M. M. Effect of Electron-Beam Induced Nanostructuring on Surface Properties and Radioluminescence of ZnS:Cu,Br Phosphors. Preprints 2022, 2022100454. https://doi.org/10.20944/preprints202210.0454.v1

Abstract

Electron beam treatment of ZnS:Cu,Br (Cu activator content 0…0.6%wt.) radioluminescent phosphors as well as charge mixture with the electron energy 900 keV and absorbed dose of 600 kGy resulted in a enhancement of brightness up to 80%. The increased brightness is due to increase of content of wurtzite phase relative to sphalerite one with formation of wurtzite/sphalerite nanocomposite structure. Transformation of crystal structure is accompanied with corresponding change in content of active surface centers characteristic for sphalerite and wurtzite phases. A model describing surface centers of ZnS:Cu,Br radioluminescent phosphor is suggested.

Keywords

radioluminescence; ZnS phosphors synthesis; surface properties; phosphor structure; spectral content; brightness

Subject

Chemistry and Materials Science, Nanotechnology

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