Ultraviolet-emitting ZnO nanowires synthesized by a physical vapor deposition approach

Citation
Yc. Kong et al., Ultraviolet-emitting ZnO nanowires synthesized by a physical vapor deposition approach, APPL PHYS L, 78(4), 2001, pp. 407-409
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
4
Year of publication
2001
Pages
407 - 409
Database
ISI
SICI code
0003-6951(20010122)78:4<407:UZNSBA>2.0.ZU;2-3
Abstract
ZnO nanowires were mass produced using a physical vapor deposition approach . The ZnO nanowire monocrystallites have an average diameter around 60 nm a nd length up to a few micrometers. The unidirectional growth of the ZnO nan owires was controlled by the conventional vapor-liquid-solid mechanism. Int ensive UV light emission peaked around 3.27 eV was observed at room tempera ture, which was assigned to emission from free exciton under low excitation intensity. The observed room temperature UV emission was ascribed to the d ecrease in structure defects as compared to bulk ZnO materials, and in part icularly to the size effect in the ZnO wires. (C) 2001 American Institute o f Physics.