NUV-pumped luminescence of thermally stable samarium-activated alkali metal borophosphate phosphor
KNa, Sm, concentration quenching, thermostability
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 4G5/2→6HJ/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.
FANG, Zhenyu; YANG, Dan; ZHENG, Youkui; SONG, Jialiang; YANG, Tongsheng; SONG, Ruitong; XIANG, Yuefei; and ZHU, Jing
"NUV-pumped luminescence of thermally stable samarium-activated alkali metal borophosphate phosphor,"
Journal of Advanced Ceramics: Vol. 10:
5, Article 10.
Available at: https://dc.tsinghuajournals.com/journal-of-advanced-ceramics/vol10/iss5/10