期刊
OPTICAL MATERIALS
卷 30, 期 9, 页码 1387-1392出版社
ELSEVIER
DOI: 10.1016/j.optmat.2007.07.005
关键词
phosphor; chemical synthesis; optical properties; luminescence
The luminescence properties of doubly activated terbium aluminium garnet samples were investigated in the present study. Commercial Tb3Al5O12:Ce3+ (TAG:Ce) shows the typical Ce3+ ion luminescence of the allowed Ce3+ d-f transition. Eu3+ co-doping, however, reveals interesting results. In TAG:Ce, Eu, both Ce3+ and Eu3+ luminescence was measured at different Ce and Eu activator concentrations. The Ce3+ ion can be used as a sensitizer in the TAG lattice that transfers its energy directly or via the Tb sublattice to the activator Eu3+. The energy-level diagram was proposed to explain the luminescence mechanism. Application of TAG:Ce, Eu with improved chromaticity coordinates CIE (Commission Internationale de l'Eclairage) and color rendering index (CRI) in light emitting diodes (LEDs) is demonstrated. (C) 2007 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据