Ultraviolet spontaneous and stimulated emissions from ZnO microcrystallite thin films at room temperature

被引：916

作者：

Zu, P

Tang, ZK

Wong, GKL

Kawasaki, M

Ohtomo, A

Koinuma, H

Segawa, Y

机构：

[1] TOKYO INST TECHNOL,CERAM MAT & STRUCT LAB,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

[2] TOKYO INST TECHNOL,CREST JSTS,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

[3] INST PHYS & CHEM RES,RIKEN,PHOTODYNAM RES CTR,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1997年 / 103卷 / 08期

关键词：

nanostructures; epitaxy; optical properties; luminescence;

D O I：

10.1016/S0038-1098(97)00216-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Room-temperature free exciton absorption and luminescence are observed in ZnO thin films grown on sapphire substrates by the laser molecular beam epitaxy technique. At moderate optical pumping intensities, an exciton-exciton collision induced stimulated emission peak is observed at 390 nm. The existence of this peak is related to the presence of closely packed hexagonally shaped microcrystallites in these films. Stimulated emission due to electron-hole plasma recombination process is also observed at higher pumping intensities. (C) 1997 Elsevier Science Ltd.

引用

页码：459 / 463

页数：5

共 23 条

[1] Growth and fabrication of GaN-InGaN microdisk laser structures [J].