Abstract
High-energy electron irradiation in ZnO produces shallow donors at about . Because the production rate is much higher for Zn-face (0001) than O-face irradiation, the donor is identified as a Zn-sublattice defect, most likely the interstitial or a -related complex. The donor energy is quite close to that of the unirradiated sample, and of other samples discussed in the literature, strongly suggesting that (and not ) is the dominant native shallow donor in ZnO. An exceptionally high displacement threshold energy is quantitatively explained in terms of a multiple-displacement model.
- Received 9 November 1998
DOI:https://doi.org/10.1103/PhysRevLett.82.2552
©1999 American Physical Society