Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin films

被引：1937

作者：

Tang, ZK ^{[1
]}

Wong, GKL

Yu, P

Kawasaki, M

Ohtomo, A

Koinuma, H

Segawa, Y

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong

[2] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 227, Japan

[3] Inst Phys & Chem Res, RIKEN, Photodynam Res Ctr, Aoba Ku, Sendai, Miyagi 980, Japan

来源：

APPLIED PHYSICS LETTERS | 1998年 / 72卷 / 25期

关键词：

D O I：

10.1063/1.121620

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Room-temperature ultraviolet (UV) laser emission of ZnO microcrystallite thin films is reported. The hexagonal ZnO microcrystallites are grown by laser molecular beam epitaxy. They are self-assembled and parallelly arrayed on sapphire substrates. The facets of the hexagons form natural Fabry-Perot lasing cavities. The optical gain for the room-temperature UV stimulated emission is of an excitonic nature and has a peak value an order of magnitude larger than that of bulk ZnO crystal. The observation of room-temperature UV lasing from the ordered, nano-sized ZnO crystals represents an important step towards the development of nanometer photoelectronics. (C) 1998 American Institute of Physics. [S0003-6951(98)03325-7].

引用

页码：3270 / 3272

页数：3

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