Microscopy Study of Morphological and Optical Changes in ZnO Nanostructures Induced by Pulsed Optical Excitation

Authors

Zachariah M. Peterson, Portland State UniversityFollow
Robert Campbell Word, Portland State UniversityFollow
Rolf Könenkamp, Portland State UniversityFollow

Published In

Microscopy and Microanalysis

Document Type

Citation

Publication Date

8-2015

Abstract

The photluminescence intensity and morphology of zinc oxide (ZnO) nanowires have shown inherent instability under high light intensities. We present scanning electron microscope (SEM) results that indicate accumulation of morphological changes under strong light exposure. In ZnO microstructures, one typically finds a strong enhancement of the luminesence intensity up to some optimum annealing time, followed by a decrease as illumination continues. Here we show that a similar metastable behavior applies to the threshold and intensity of random lasing in ZnO nanoparticle films.

Rights

© Microscopy Society of America 2015

Locate the Document

https://doi.org/10.1017/S1431927615009812

DOI

10.1017/S1431927615009812

Persistent Identifier

https://archives.pdx.edu/ds/psu/30277

Citation Details

Peterson, Z. M., Word, R. C., & Konenkamp, R. (2015). Microscopy Study of Morphological and Optical Changes in ZnO Nanostructures Induced by Pulsed Optical Excitation. Microscopy and Microanalysis, 21(S3), 1807-1808.