Chen, X;
Zhang, Z;
Zhang, Y;
Yao, B;
Li, B;
Gong, Q;
(2019)
Passivation Mechanism of Nitrogen in ZnO under Different Oxygen Ambience.
Crystals
, 9
(4)
, Article 204. 10.3390/cryst9040204.
Preview |
Text
crystals-09-00204-v2.pdf - Published Version Download (1MB) | Preview |
Abstract
Nitrogen-doped ZnO thin films were grown on a-plane Al2O3 by plasma-assisted molecular beam epitaxy. Hall-effect measurements indicated that the nitrogen-doped ZnO films showed p-type behavior first, then n-type, with the growth conditions changing from oxygen-radical-rich to oxygen-radical-deficient ambience, accompanied with the increase of the N/O ratio in the plasmas. The increasing green emission in the low temperature photoluminescence spectra, related to single ionized oxygen vacancy in ZnO, was ascribed to the decrease of active oxygen atoms in the precursor plasmas. CN complex, a donor defect with low formation energy, was demonstrated to be easily introduced into ZnO under O-radical-deficient ambience, which compensated the nitrogen-related acceptor, along with the oxygen vacancy.
| Type: | Article |
|---|---|
| Title: | Passivation Mechanism of Nitrogen in ZnO under Different Oxygen Ambience |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3390/cryst9040204 |
| Publisher version: | https://doi.org/10.3390/cryst9040204 |
| Language: | English |
| Additional information: | This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | molecular beam epitaxy; ZnO; dopant; defects |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10079246 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
