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Title: Phosphorescence quenching by mechanical stimulus in CaZnOS:Cu

We have found that phosphorescence intensity of CaZnOS:Cu decreased visibly under an applied load. This mechanical quenching (MQ) of phosphorescence in CaZnOS:Cu corresponded to the mechanical stimuli. We have thus demonstrated that the MQ of CaZnOS:Cu could be used for visualizing stress distributions in practical applications. We propose that MQ arises from non-radiative recombination due to electron-transfer from trap levels to non-radiative centers as a result of the mechanical load.
Authors:
;  [1] ;  [2] ;  [1] ;  [2] ;  [3] ; ;  [1] ;  [1] ;  [2]
  1. National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052 (Japan)
  2. (Japan)
  3. (WPI-I2CNER), Kyushu University, Fukuoka 819-0395 (Japan)
Publication Date:
OSTI Identifier:
22303943
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM COMPOUNDS; COPPER ADDITIONS; DISTRIBUTION; ELECTRON TRANSFER; OXYGEN COMPOUNDS; PHOSPHORESCENCE; QUENCHING; RECOMBINATION; STIMULI; STRESSES; SULFUR COMPOUNDS; TRAPS; ZINC COMPOUNDS