Journal
CERAMICS INTERNATIONAL
Volume 47, Issue 15, Pages 21828-21836Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.04.200
Keywords
Content quenching; Thermal quenching; Samarium; Photoluminescence; Borophosphate
Categories
Funding
- National Natural Science Foundation of China [21761034]
- Natural Science Foundation of Yunnan Province [2018FB017]
- Program for Excellent Young Talents, Yunnan University
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Microsized borophosphate-based phosphors of RbBaBP2O8:Sm were successfully prepared in this research, showing high thermal stability, good color stability, and low correlated color temperature, promising for applications in warm white LEDs.
Microsized borophosphate-based phosphors of RbBaBP2O8:Sm were successfully prepared in this research. X-ray diffraction investigation proves that all phosphors are single phases belonging to the RbBaBP2O8-type diamondoid structure. According to the XPS, luminescence, and optical decay time investigations, there are the coexistence of the divalent and trivalent samarium ions in the RBBP matrix. Upon near-ultraviolet (401 nm) irradiation, the characteristic transitions of both Sm3+ and Sm2+ ions contribute to pink light emission. The content quenching and thermal quenching mechanisms are studied. The RbBaBP2O8:Sm phosphor shows high thermal stability, good color stability, and low correlated color temperature, indicating its promising application in warm white LEDs.
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