Nature of Native Defects in ZnO

F. A. Selim, M. H. Weber, D. Solodovnikov, and K. G. Lynn
Phys. Rev. Lett. 99, 085502 – Published 21 August 2007

Abstract

This study revealed the nature of native defects and their roles in ZnO through positron annihilation and optical transmission measurements. It showed oxygen vacancies are the origin for the shift in the optical absorption band that causes the red or orange coloration. It also revealed experimental evidence that the donor nature of oxygen vacancy is 0.7eV. In addition, this work showed the Zn interstitial was not the donor in the as-grown ZnO and supported recent calculations that predicted hydrogen in an oxygen vacancy forms multicenter bonds and acts as a shallow donor.

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  • Received 9 April 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.085502

©2007 American Physical Society

Authors & Affiliations

F. A. Selim*, M. H. Weber, D. Solodovnikov, and K. G. Lynn

  • Department of Physics and Astronomy and Center for Materials Research, Washington State University, Pullman, Washington 99164-2711, USA

  • *To whom all correspondence should be addressed. selim@wsu.edu

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Issue

Vol. 99, Iss. 8 — 24 August 2007

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