Journal
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
Volume 112, Issue 2, Pages 317-322Publisher
SPRINGER
DOI: 10.1007/s00339-013-7795-z
Keywords
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Funding
- National Natural Science Foundation of China [NSFC 51032002, 11274173]
- National High Technology Research and Development Program ('863' Program) of China [2011AA050526]
- Science and Technology Support Plan of Jiangsu Province [BE2011191]
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Dy3+-Tm3+ doped transparent glass ceramics containing GdSr2F7 nanocrystals were fabricated successfully by a melt-quenching method and subsequent heating. X-ray diffraction and transmission electron microscopy analyses show that tetragonal GdSr2F7 nanocrystals are homogeneously precipitated among the borosilicate glass matrix. If excited with 354 nm UV light, the photoluminescence spectrum of Dy3+ single-doped transparent glass ceramics shows white-light emission. With doping of Tm3+, the overall emission color of Tm3+-Dy3+ co-doped transparent glass ceramics can be tuned from white to blue through energy transfer between Dy3+ and Tm3+. CIE chromaticity and color temperature measurements show that the resulting TGCS may be a candidate as a white LED material pumped by a UV InGaN chip.
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