title: Rich variety of defects in ZnO via an attractive interaction between O vacancies and Zn interstitials: origin of n-type doping.
abstract: As the concentration of intrinsic defects becomes sufficiently high in O-deficient ZnO, interactions between defects lead to a significant reduction in their formation energies. We show that the formation of both O vacancies and Zn interstitials becomes significantly enhanced by a strong attractive interaction between them, making these defects an important source of n-type conductivity in ZnO.
authors.affiliation: Korea Research Institute of Standards and Science, P.O. Box 102, Yuseong, Daejeon 305-600, Korea. yongsung.kim@kriss.re.kr
authors.forename: Yong-Sung
authors.initials: YS
authors.lastname: Kim
authors.forename: C H
authors.initials: CH
authors.lastname: Park