Mechanisms behind green photoluminescence in ZnO phosphor powders

被引：3638

作者：

Vanheusden, K ^{[1
]}

Warren, WL ^{[1
]}

Seager, CH ^{[1
]}

Tallant, DR ^{[1
]}

Voigt, JA ^{[1
]}

Gnade, BE ^{[1
]}

机构：

[1] TEXAS INSTRUMENTS INC,DALLAS,TX 75234

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 79卷 / 10期

关键词：

D O I：

10.1063/1.362349

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We explore the interrelationships between the green 510 nm emission, the free-carrier concentration, and the paramagnetic oxygen-vacancy density in commercial ZnO phosphors by combining photoluminescence, optical-absorption, and electron-paramagnetic-resonance spectroscopies. We find that the green emission intensity is strongly influenced by free-carrier depletion at the particle surface, particularly for small particles and/or low doping. Our data suggest that the singly ionized oxygen vacancy is responsible for the green emission in ZnO; this emission results from the recombination of a photogenerated hole with the singly ionized charge state of this defect. (C) 1996 American Institute of Physics.

引用

页码：7983 / 7990

页数：8

共 19 条

[1] SURFACE EFFECTS ON LOW-ENERGY CATHODOLUMINESCENCE OF ZINC-OXIDE [J].