Journal
OPTICAL MATERIALS
Volume 45, Issue -, Pages 1-8Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2015.03.002
Keywords
Displacement damage; Lifetime; Decay; Photoluminescence; Phosphors; Proton radiation
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Funding
- Defense Threat Reduction Agency (DTRA Grant) [HDTRA1-10-1-0112]
- Vanderbilt Institute of Nanoscale Science and Engineering (VINSE)
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The photoluminescence lifetime and spectrum of YBO3:Ce3+ are observed before and after proton bom-bardment. The optical properties change under irradiation, and thus the material can record information about the radiation exposure. As the fluence of 1 MeV protons increases beyond 10(14) proton/cm(2), the lifetime of YBO3:Ce3+ decreases nearly exponentially. Furthermore, by changing the concentration of cerium, the sensitivity of the material to the radiation induced defects is controllable such that lower-doped YBO3:Ce3+ is more sensitive to damage. (C) 2015 Elsevier B.V. All rights reserved.
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