Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/64532
Title: Energy harvesting and conversion mechanisms for intrinsic upconverted mechano-persistent luminescence in CaZnOS
Authors: Huang, B 
Issue Date: 21-Sep-2016
Publisher: Royal Society of Chemistry
Source: Physical chemistry chemical physics, 2016, v. 18, no. 37, p. 25946-25974 How to cite?
Journal: Physical chemistry chemical physics 
Abstract: We interpreted the mechanisms of energy harvesting and conversion for intrinsic upconverted mechano-persistent luminescence in CaZnOS through a native point defects study. We found that vacancy defects such as Zn and O vacancies, as well as Schottky pair defects, act as energy harvesting centers; they are very readily formed and very active. They are found to be extra deep electron or hole trap levels near the valence or conduction band edges, respectively. This leads to a coupling and exchange effect to continuously collect and transport host charges along a path via localized states to deep recombination levels. The initiating energy barrier is small and can be overcome by ambient thermal stimulation or quantum tunneling. Native activators such as V[sup]2+[sub]O, V[sup]2+[sub]ZnO, and V[sup]2+[sub]CaZnOS function as energy conversion centers to transfer energy into photon emissions. This gives a solid theoretical reference for developing upconverted mechano-persistent luminescence.
URI: http://hdl.handle.net/10397/64532
ISSN: 1463-9076
EISSN: 1463-9084
DOI: 10.1039/c6cp04706h
Rights: The article is licensed under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) <https://creativecommons.org/licenses/by-nc/3.0/>
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