Journal
JOURNAL OF ADVANCED CERAMICS
Volume 10, Issue 5, Pages 1072-1081Publisher
SPRINGER
DOI: 10.1007/s40145-021-0492-z
Keywords
KNa4B2P3O13 (KNBP); Sm3+ luminescence; concentration quenching; thermostability
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Funding
- National Natural Science Foundation of China [21761034, 22165031]
- Open Foundation of Key Laboratory for Micro/Nano Materials & Technology of Yunnan Province [2021KF01]
- Program for Excellent Young Talents, Yunnan University
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This study reports a new Sm3+-activated KNBP powder phase with good photoluminescence performance and thermal stability under NUV irradiation. The powder phase is suitable for NUV-pumped warm white LEDs.
Exploring outstanding rare-earth activated inorganic phosphors with good thermostability has always been a research focus for high-power white light-emitting diodes (LEDs). In this study, we report a Sm3+-activated KNa4B2P3O13 (KNBP) powder phase. Its particle morphology, photoluminescence properties, concentration quenching mechanism, thermal quenching mechanism, and chromatic properties are demonstrated. Upon the near-ultraviolet (NUV) irradiation of 402 nm, the powder phase exhibits orange-red visible luminescence performance, originating from typical (4)G(5/2)-> H-6(J/2) (J = 5, 7, 9) transitions of Sm3+. Importantly, the photoluminescence performance has good thermostability, low correlated color temperature (CCT), and high color purity (CP), indicating its promising application in the NUV-pumped warm white LEDs.
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