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Expanded and Enhanced Deep‐ UV Excitations of Mn 2+ ‐Doped Phosphate Glasses Sensitized by Gd 3+ Ions
Author(s) -
Xia Fanshu,
Liu Yinyao,
Wang Yiqun,
Chen Guorong
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13770
Subject(s) - photoluminescence , ion , doping , phosphate glass , analytical chemistry (journal) , excitation , materials science , emission spectrum , energy transfer , spectral line , luminescence , range (aeronautics) , phosphate , chemistry , optoelectronics , physics , molecular physics , quantum mechanics , astronomy , composite material , organic chemistry , chromatography
Mn 2+ ‐doped phosphate glasses sensitized by Gd 3+ ions are investigated. Enhanced photoluminescence ( PL ) properties of the samples are found with the excitations expanding toward the deep‐ UV part of the spectrum. PL emission and excitation spectra correlated with the lifetime data consistently present evidences of the enhanced Mn 2+ emission in association with the energy transfer from Gd 3+ ions. In particular, the Gd 3+ codoping benefits greatly the energy harvesting of Mn 2+ ions, resulting in the enhanced and tunable excitations of Mn 2+ ions which expand toward the deep‐ UV part of the spectrum at 273 and 311 nm, respectively. Thus by Gd 3+ sensitizing, the excitation source of the Mn 2+ emission has covered the broad range of the spectrum from the original blue and near‐ UVA to the deep‐ UVB and UVC together with the enhanced emission in the green‐to‐red spectral region. The possible energy‐transfer mechanisms involved are discussed.