Blue emitting BaMgAl10O17:Eu with a blue body color

被引：42

作者：

Jüstel, T ^{[1
]}

Bechtel, H ^{[1
]}

Mayr, W ^{[1
]}

Wiechert, DU ^{[1
]}

机构：

[1] Philips GmbH, Forschungslab Aachen, D-52066 Aachen, Germany

来源：

JOURNAL OF LUMINESCENCE | 2003年 / 104卷 / 1-2期

关键词：

afterglow; energy transfer; plasma display phosphors; VUV spectroscopy; BaMgAl10O17 : Eu;

D O I：

10.1016/S0022-2313(03)00010-3

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The optical properties of Co2+-doped BaMgAl10O17 (BAM) and BaMgAl10O17:Eu (BAM:Eu) are elucidated with emphasis on reflection, (V)UV excitation and luminescence spectra. Doping of BAM with Co2+ yields a powder with a blue body color equal to that of CoAl2O4. Co2+ is incorporated into the spinel blocks of BAM, which are spaced by Ba-O layers hosting the activator Eu2+. By means of reflection spectra it is shown that the local environment of Co2+ is equal to that in CoAl2O4, which is responsible for the identical body color. The intrinsic pigmentation of BAM:Eu by Co2+ yields a phosphor with an improved color point due to the self-absorption of the low-energy tail of the 4f-5d emission band of Eu2+. Moreover, the presence of Co2+ in the host lattice of BAM results in resonant afterglow behavior. Only under photoexcitation at the band gap of BAM:Eu afterglow is observed. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：137 / 143

页数：7