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

Year: 1998

Type: article

Abstract: 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–Pérot 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.

Source: Applied Physics Letters

DOI: 10.1063/1.121620

Authors: Z. K. Tang, G. K. L. Wong, P. Yu, M. Kawasaki, A. Ohtomo, H. Koinuma, Y. Segawa

Institutions: Hong Kong University of Science and Technology, Tokyo Institute of Technology, Materials & Structures Laboratory, RIKEN

Language: English

Topic: ZnO doping and properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2117389328

FWCI: 27.92

Cites: 19

Cited by: 1,824

Related to: 9