Affiliation:
1. Department of Chemical Science and Technology, Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minami-Josanjima, Tokushima 770-8506, Japan
Abstract
Using Eu2O3, BaCO3, Si3N4 and SiO2 as starting materials, we succeeded in synthesizing BaSi4O6N2:Eu[Formula: see text] by firing the mixture at 1100∘C for 2[Formula: see text]h in a reducing atmosphere (N2(95%)–H2(5%)). As a result, a single phase was obtained by setting the charge composition ratio to Si/[Formula: see text]. When the Eu[Formula: see text] activation amount was 1%, it showed a broad emission in the range of 400–600[Formula: see text]nm under the excitation light of ultraviolet rays at 320[Formula: see text]nm. This phosphor exhibited chromaticity coordinates of [Formula: see text] under irradiation with ultraviolet rays at 320[Formula: see text]nm and is thought to be a promising phosphor for ultraviolet-excited white LEDs.
Funder
Scientific Research Project on Introduction of Talents in Guizhou University
Science and Technology Foundation of Guizhou Province
Publisher
World Scientific Pub Co Pte Ltd
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics