Exciton and core-level electron confinement effects in transparent ZnO thin films

• DOI: 10.1038/srep01714
• Publication Date: 2013-04-24T09:05:31Z
• Authors: Adolfo A. Mosquera; David Horwat; Alexandr Rashkovskiy; Anatoly Kovalev; Patrice Miska; Dmitry Wainstein; Jose M. Albella; Jose L. Endrino
• Keywords: Ultraviolet; Blueshift

The excitonic light emission of ZnO films have been investigated by means photoluminescence measurements in ultraviolet-visible region. Exciton confinement effects observed thin coatings with thickness below 20 nm. This is enhanced a rise the intensity and blue shift peak after extraction adsorbed species upon annealing air. It found experimentally that free exciton energy (determined peak) inversely proportional to square while core-level binding thickness. These findings correlate very well theory kinetic potential confinements.