Chinese Optics Letters, 2015, 13 (9): 091601, Published Online: Sep. 14, 2018
Near-white light-emitting Dy3+-doped transparent glass ceramics containing Ba2LaF7 nanocrystals
160.2540 Fluorescent and luminescent materials 160.4760 Optical properties 160.5690 Rare-earth-doped materials
Abstract
Glass ceramics Ba 2 LaF 7 : x Dy 3 + are obtained through the conventional melt-quenching technique, and their luminescent 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 F 9 / 2 4 → H 15 / 2 6 , F 9 / 2 4 → H 13 / 2 6 and F 9 / 2 4 → H 11 / 2 6 transitions of the Dy 3 + ion, respectively. The corresponding Commission Internationale de L’Eclairage (CIE) chromaticity coordinate for a sample of 2 mol.% Dy 2 O 3 after being heat-treated at 690°C is (0.313, 0.328). It is concluded that the formed materials may have the possibility of applications for white light-emitting diodes (LEDs).
Shaoye Ouyang, Weihuan Zhang, Zhixiong Zhang, Yuepin Zhang, Haiping Xia. Near-white light-emitting Dy3+-doped transparent glass ceramics containing Ba2LaF7 nanocrystals[J]. Chinese Optics Letters, 2015, 13(9): 091601.