Cathodoluminescence study on the hydrogenation of ZnO luminescence

被引：10

作者：

Sekiguchi, T

Ohashi, N

Terada, Y

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 980, Japan

[2] Tokyo Inst Technol, Dept Inorgan Mat, Meguro Ku, Tokyo 152, Japan

来源：

DEFECTS IN SEMICONDUCTORS - ICDS-19, PTS 1-3 | 1997年 / 258-2卷

关键词：

ZnO; cathodoluminescence; green emission; hydrogen; passivation;

D O I：

10.4028/www.scientific.net/MSF.258-263.1371

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the luminescence property of ZnO single crystals by means of cathodoluminescence. It was found that hydrogen plasma strongly passivates the green emission and enhances the excitonic luminescence of ZnO. The band edge luminescence shows strong temperature dependence after hydrogenation and its intensity at low temperatures becomes remarkably high. The effect of hydrogenation disappears by an annealing at 700 degrees C, which indicates hydrogen is rather strongly bound to the centers for green emission. This study indicates that the passivation of deep levels is the key for the application of ZnO crystals for the ultraviolet Light source.

引用

页码：1371 / 1376

页数：6

共 12 条

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