Chinese Optics Letters, 2015, 13 (9): 091601, Published Online: Sep. 14, 2018  

Near-white light-emitting Dy3+-doped transparent glass ceramics containing Ba2LaF7 nanocrystals

Author Affiliations
Key Laboratory of Photo-Electronic Material, Ningbo University, Ningbo 315211, China
Abstract
Glass ceramics Ba2LaF7:xDy3+ 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 F9/24H15/26, F9/24H13/26 and F9/24H11/26 transitions of the Dy3+ ion, respectively. The corresponding Commission Internationale de L’Eclairage (CIE) chromaticity coordinate for a sample of 2 mol.% Dy2O3 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.

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