文献类型：期刊文献

英文题名：Luminescent properties of novel red-emitting phosphor: Gd2O2CN2:Eu3+

作者：Wang, Luting[1];Yuan, Shuanglong[1];Yang, Yunxia[1];Chevire, Francois[2];Tessier, Franck[2];Chen, Guorong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Rennes 1, UMR CNRS 6226, Inst Sci Chim Rennes, Equipe Verres & Ceram, F-35042 Rennes, France

年份：2015

卷号：5

期号：11

起止页码：2616

外文期刊名：OPTICAL MATERIALS EXPRESS

收录：;EI(收录号：20154801607858);WOS:【SCI-EXPANDED(收录号:WOS:000364467700024)】；

基金：This project has been supported by the National Natural Science Foundation of China (No.51502091), and the Fundamental Research Funds for the Central Universities (WD1314055, WD1313009).

语种：英文

外文关键词：Flow of gases - Solid state reactions - Fluorine compounds - Lithium compounds - X ray diffraction analysis - Gadolinium compounds

摘要：Eu3+-doped Gd2O2CN2 was firstly synthesized by a classical solid-state reaction of Li2CO3, Eu2O3 and GdF3 under NH3 gas flow in the presence of graphite at low firing temperature. Powder X-ray diffraction (XRD) analysis indicated that Gd2O2CN2: Eu3+ crystallizes in a trigonal-type structure with space group P-3m1. Gd2O2CN2: Eu3+ shows a sharp red emission band peaking at 626 nm under excitation at 300 nm at room temperature. PL spectra indicates that Eu3+ doped Gd2O2CN2 samples emit the typical emission peaks at 614 nm and 626 nm originated from the hypersensitive electric dipole transition (D-5(0) -> F-7(2)) of Eu3+ ions. The optimized doping concentration of Eu3+ ions was found to be 7.5 at. %, and the critical transfer distance was calculated to be 10.907 angstrom. (C) 2015 Optical Society of America