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Tuning the Color Emission of Sr 2 P 2 O 7 : Tb 3+ , Eu 3+ Phosphors Based on Energy Transfer
Author(s) -
Xu Mengjiao,
Wang Luxiang,
Jia Dianzeng,
Zhao Hongyang
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.13497
Subject(s) - phosphor , chromaticity , photoluminescence , analytical chemistry (journal) , emission spectrum , luminescence , ion , materials science , thermal stability , chemistry , spectral line , atomic physics , optoelectronics , optics , physics , organic chemistry , chromatography , astronomy
A series of color tunable Tb 3+ ‐ and Eu 3+ ‐activated Sr 2 P 2 O 7 phosphors were synthesized by a traditional solid‐state reaction method in air atmosphere. The crystal structure, photoluminescence ( PL ) properties, energy transfer, thermal stability, and luminous efficiency were investigated. A series of characteristic emission of Tb 3+ and Eu 3+ were observed in the PL spectra and the variation in the emission intensities of the three emission peaks at around 416 nm (blue), 545 nm (green), and 593 nm (orange‐red) induced the multicolor emission evolution by tuning the Tb 3+ /Eu 3+ content ratio. The energy‐transfer mechanism from Tb 3+ to Eu 3+ ion was determined to be dipole–dipole interaction, and the energy‐transfer efficiency was about 90%. The novel phosphors have excellent thermal stability in the temperature range of 77–473 K and the Commission International De L'Eclairage 1931 chromaticity coordinates of Sr 2 P 2 O 7 : Tb 3+ , Eu 3+ (λ ex = 378 nm) move toward the ideal white light coordinates.