Dynamics of photoexcited carriers in ZnO epitaxial thin films
- 26 July 1999
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 75 (4) , 469-471
- https://doi.org/10.1063/1.124411
Abstract
Optical gain spectra of ZnO epitaxial thin films have been measured by using a pump–probe technique. The optical gain is thought to be due to electron–hole plasma. In the differential absorption spectra, we observed saturation of the exciton absorption, band-gap renormalization, as well as the optical gain. From the temporal changes of these structures, the dynamical properties of the photoexcited carriers are discussed.Keywords
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