Recombination processes in systems based on doped ionic crystals with impurity-related nanostructures

Recombination processes leading to the tunnelling afterglow and photostimulated luminescence in systems based on host ionic crystals with impurity-related nanostructures-promising phosphors for x-ray storage-were studied by means of luminescence, EPR and optically detected magnetic resonance. It was...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2010-07, Vol.22 (29), p.295306-295306
Main Authors: Tolmachev, D O, Badalyan, A G, Babunts, R A, Khramtsov, V A, Romanov, N G, Baranov, P G, Dyakonov, V V
Format: Article
Language:English
Subjects:
Afterglows
Condensed matter
Crystal structure
Crystallization
Electron Spin Resonance Spectroscopy
Europium - chemistry
Ions
Light
Luminescence
Magnetic Resonance Spectroscopy
Magnetics
Models, Chemical
Nanomaterials
Nanostructure
Nanostructures - chemistry
Nanotechnology - methods
Tunnelling
X-Rays
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Summary:Recombination processes leading to the tunnelling afterglow and photostimulated luminescence in systems based on host ionic crystals with impurity-related nanostructures-promising phosphors for x-ray storage-were studied by means of luminescence, EPR and optically detected magnetic resonance. It was found that in the x-ray irradiated CsBr:Eu and CsBr:Pb crystals the energy released in the spin-dependent tunnelling recombination of electron-hole pairs and self-trapped excitons in the host crystal is directionally transferred to the impurity-related low-dimensional structures. To identify the origin of recombining electron and hole centres, their EPR spectra were detected by monitoring the tunnelling afterglow and the photostimulated luminescence including the emission bands of the low-dimensional structures.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/22/29/295306