A two-component phosphor approach for engineering electroluminescence phosphors

被引：6

作者：

Jones, TC ^{[1
]}

Park, W ^{[1
]}

Summers, CJ ^{[1
]}

机构：

[1] Georgia Inst Technol, Phosphor Technol Ctr Excellence, Atlanta, GA 30332 USA

来源：

APPLIED PHYSICS LETTERS | 1999年 / 75卷 / 16期

关键词：

D O I：

10.1063/1.125026

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electroluminescence (EL) properties of SrS:Cu, SrS:Ag, and SrS:Ag,Cu thin-film phosphors are reported. SrS:Cu and SrS:Ag are shown to exhibit very different EL properties with SrS:Cu possessing a luminance and efficiency of 30.8 cd/m(2) and 0.2 lm/W, compared to SrS:Ag whose luminance and efficiency are 0.7 cd/m(2) and 0.001 lm/W, respectively. In contrast, SrS:Ag,Cu exhibits the high luminance and efficiency of SrS:Cu, but the saturated chromaticity of SrS:Ag, which exhibits an excellent blue chromaticity of (0.17,0.15). The improved electroluminescent luminance, efficiency, and color purity of SrS:Ag,Cu are explained by the energy transfer from the Cu+ to Ag+ ions. These results suggest a concept to improve EL performance through the use of a class of two-component phosphors, which exhibit superior color, brightness, and excitation efficiency. (C) 1999 American Institute of Physics. [S0003-6951(99)01640-X].

引用

页码：2398 / 2400

页数：3

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