Journal
BULLETIN OF MATERIALS SCIENCE
Volume 38, Issue 1, Pages 215-220Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-014-0787-6
Keywords
Photoluminescence; CaZrO3:Eu3+; Gd3+; sol-gel combustion; optical property
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Funding
- Chinese PLA Medical Science and Technique Foundation [CWS11J243]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, P R China
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A facile sol-gel combustion route was reported for the direct preparation of CaZrO3:Eu3+ and CaZrO3:Eu3+, Gd3+. The obtained deposits were characterized by XRD, TGA-DSC, SEM, EDS, PL measurements and microscope fluorescence. When the Gd3+ ions were introduced in this compound, the emissions of CaZrO3:Eu(3+)were remarkably enhanced. The emission spectrum of CaZrO3:Eu3+, Gd3+ nanocrystals exhibited a red shift compared with CaZrO3:Eu3+ samples. A new mechanism of the improved photoluminescent properties of Eu3+ by Gd3+ was investigated. The optimized phosphor CaZrO3:5%Eu3+, 2%Gd3+ could be considered an efficient red-emitting component for white lighting devices excited in the near-ultraviolet region.
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