Near-white light-emitting Dy^(3+)-doped transparent glass ceramics containing Ba_2LaF_7 nanocrystals
Near-white light-emitting Dy^(3+)-doped transparent glass ceramics containing Ba_2LaF_7 nanocrystals作者机构：Key Laboratory of Photo-Electronic Material Ningbo University
出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)
年 卷 期：2015年第13卷第9期
页 面：58-61页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by the National Natural Science Foundation of China(Grant Nos.61275180 and51472125) the K.C.Wong Magna Fund of Ningbo University
主 题：Ba La Near-white light-emitting Dy doped transparent glass ceramics containing Ba2LaF7 nanocrystals LEDs
摘 要：Glass ceramics Ba2LaFT：xDy3＋ are obtained through the conventional melt-quenching technique, and their lu- minescent properties are investigated. Under 350 nm excitation, the emission spectra consists of a strong blue- yellow band as well as a weak red emission centered at 660 nm, which are attributed to the 4F9/2 →6H15/2, 4F9/2→6H13/2 and 4F9/2 → 6Hll/2 transitions of the Dy3＋ ion, respectively. The corresponding Commission Internationale de L＇Eclairage （CIE） chromaticity coordinate for a sample of 2 mol.% Dy203 after being heat-treated at 690℃ is （0.313, 0.328）. It is concluded that the formed materials may have the possibility of applications for white light-emitting diodes （LEDs）.
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