Ultraviolet lasing and time-resolved photoluminescence of well-aligned ZnO nanorod arrays
Authors:
- 25 May 2005
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 86 (22) , 223106
Abstract
Well-aligned ZnO nanorod arrays were synthesized by thermal evaporation of ZnO powder on ZnO thin films. The nanorods are almost the same length of 5.5μm and well-oriented perpendicular to the substrates. The time-integrated and time-resolved photoluminescence spectra of the nanorod arrays revealed the existence of laser action with the excitation threshold of 130μJ∕cm2 and emission lifetime of less than 30 ps. At the excitation fluence a little below threshold, the decay fits well to a biexponential function with a fast component (∼80ps) and a slower component (∼360ps).Keywords
This publication has 23 references indexed in Scilit:
- ZnO Nanoribbon Microcavity LasersAdvanced Materials, 2003
- Time-resolved photoluminescence study of a ZnO thin film grown on a (100) silicon substrateJournal of Crystal Growth, 2003
- High‐Density, Ordered Ultraviolet Light‐Emitting ZnO Nanowire ArraysAdvanced Materials, 2003
- Room-Temperature Ultraviolet Nanowire NanolasersScience, 2001
- Nanobelts of Semiconducting OxidesScience, 2001
- Time-resolved photoluminescence in ZnO epitaxial thin films studied by up-conversion methodJournal of Crystal Growth, 2000
- True Blue Inorganic Optoelectronic DevicesAdvanced Materials, 2000
- Ultraviolet lasing in resonators formed by scattering in semiconductor polycrystalline filmsApplied Physics Letters, 1998
- Room-temperature ultraviolet laser emission from self-assembled ZnO microcrystallite thin filmsApplied Physics Letters, 1998
- Optically pumped lasing of ZnO at room temperatureApplied Physics Letters, 1997