Issue 6, 2012

Structure evolution and optical properties of hierarchical ZnO micro/nanorods fabricated by a two-step growth method

Abstract

A large scale of hexagonal ZnO microrods were firstly fabricated by a hydrothermal method, then the secondary growth was performed using a vapor phase transport method. During the second growth stage, the structural evolution from hexagonal microrod to dodecagonal microrod was realized, and the regular nanorods array epitaxially grew up on the microrods' end surfaces. P-band emission ascribed to exciton-exciton scattering process was observed from the hexagonal and dodecagonal microrods. In addition, a single dodecagonal microrod was employed as a microlaser cavity where the whispering gallery mode lasing was stimulated under the excitation of the nanosecond pulsed laser at 355 nm.

Graphical abstract: Structure evolution and optical properties of hierarchical ZnO micro/nanorods fabricated by a two-step growth method

Article information

Article type
Paper
Submitted
20 Sep 2011
Accepted
30 Nov 2011
First published
18 Jan 2012

CrystEngComm, 2012,14, 2180-2185

Structure evolution and optical properties of hierarchical ZnO micro/nanorods fabricated by a two-step growth method

J. Dai, C. Xu, M. Gao, Z. Liu, Z. Shi, X. Xu, J. Guo and Z. Li, CrystEngComm, 2012, 14, 2180 DOI: 10.1039/C2CE06231C

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