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Swift heavy ion induced structural and luminescence characterization of Y 2 O 3 :Eu 3+ phosphor: a comparative study
Author(s) -
Som S,
Sharma S K,
Lochab S P
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2573
Subject(s) - thermoluminescence , phosphor , swift heavy ion , irradiation , ion , fluence , materials science , crystallinity , luminescence , analytical chemistry (journal) , chemistry , nuclear physics , optoelectronics , physics , organic chemistry , chromatography , composite material
We report a comparative study on structural and thermoluminescence modifications of Y 2 O 3 :Eu 3+ phosphor induced by 150 MeV Ni 7+ , 120 MeV Ag 9+ and 110 MeV Au 8+ swift heavy ions (SHI) in the fluence range 1 × 10 11 to 1 × 10 13 ions/cm 2 . X‐Ray diffraction and transition electron microscopy studies confirm the loss of crystallinity of the phosphors after ion irradiation, which is greater in the case of Au ion irradiation. Structural refinement using the Rietveld method yields the various structural parameters of ion‐irradiated phosphors. Thermoluminescence glow curves of ion‐irradiated phosphors show a small shift in the position of the peaks, along with an increase in intensity with ion fluence. Stopping range of ions in Matter (SRIM) calculations were performed to correlate the change in thermoluminescence properties of various ion‐irradiated phosphors. It shows that the defects created by 110 MeV Au 8+ ions are greater in number. Trapping parameters of ion‐irradiated phosphors were calculated from thermoluminescence data using various glow curve analysis methods. Copyright © 2013 John Wiley & Sons, Ltd.