标题：Synthesis and Luminescence Properties of a Novel Yellow-White Emitting NaLa(MoO4)(2): Dy3+, Li+ Phosphor
作者：Huang, Hui-Ning; Zhou, Juan; Zhou, Hai-Feng; Yu, Zhi-Chao; Wu, Ya-Qiang; Zhou, Guang-Jun
作者机构：[Huang, Hui-Ning; Yu, Zhi-Chao; Wu, Ya-Qiang; Zhou, Guang-Jun] Shandong Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.; [Zhou, Juan] Jin 更多
通讯作者地址：[Zhou, GJ]Shandong Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China;[Zhou, GJ]Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandon 更多
来源：JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
关键词：Yellow-White Emitting Phosphors; NaLa(MoO4)(2): Dy3+; Li+;; Photoluminescence; Sol-Gel Combustion
摘要：Intense yellow-white NaLa(MoO4)(2): Dy3+ phosphors co-doped with Li+ ions have been successfully synthesized via facile sol-gel combustion approach. The dependence of the crystal structure and crystallinity, particle morphology, photoluminescence property, fluorescent lifetime and absolute quantum efficiency of the as-prepared phosphors has been investigated. Stable yellow-white emission from 440 nm to 600 nm and higher absolute quantum efficiency were studied on Dy3+ doped NaLa(MoO4)(2), Dy3+ and Li+ co-doped NaLa(MoO4)(2), respectively. Surprisingly, only a small amount of Li+ can lead to a remarkable increase of the PL intensity and the quantum efficiency. Especially, along with 0.75 mol% Li+ ions induced in the NaLa(MoO4)(2): Dy3+ phosphors, the absolute quantum efficiency increased from 13.8% to 22%, and the possible mechanism has been deeply discussed. Outstanding luminescence properties have certified that NaLa(MoO4)(2): Dy3+, Li+ phosphors are promising candidates as new yellow-white components for optical devices.