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

Elena Vladimirovna Zelenina; Vadim Bakhmetyev; Maxim Maximovich Sychov

doi:10.20944/preprints202210.0454.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

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.

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

Chemistry and Materials Science, Nanotechnology

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

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