Abstract
We have used positron annihilation spectroscopy to determine the nature and the concentrations of the open volume defects in as-grown and electron irradiated (, fluence ) ZnO samples. The Zn vacancies are identified at concentrations of in the as-grown material and in the irradiated ZnO. These concentrations are in very good agreement with the total acceptor density determined by temperature dependent Hall experiments. Thus, the Zn vacancies are dominant acceptors in both as-grown and irradiated ZnO.
- Received 17 June 2003
DOI:https://doi.org/10.1103/PhysRevLett.91.205502
©2003 American Physical Society