title: The Luminescent Inhomogeneity and the Distribution of Zinc Vacancy-Related Acceptor-Like Defects in N-Doped ZnO Microrods.
abstract: Vertically aligned N-doped ZnO microrods with a hexagonal symmetry were fabricated via the chemical vapor transport with abundant N2O as both O and N precursors. We have demonstrated the suppression of the zinc interstitial-related shallow donor defects and have identified the zinc vacancy-related shallow and deep acceptor states by temperature variable photoluminescence in O-rich growth environment. Through spatially resolved cathodoluminescence spectra, we found the luminescent inhomogeneity in the sample with a core-shell structure. The deep acceptor-isolated VZnand the shallow acceptor VZn-related complex or clusters mainly distribute in the shell region.
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China.|School of Science, China Pharmaceutical University, Nanjing, 211198, China.
authors.forename: Zhengrong
authors.initials: Z
authors.lastname: Yao
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China. ktang@nju.edu.cn.
authors.forename: Kun
authors.initials: K
authors.lastname: Tang
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China.
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Xu
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China.
authors.forename: Jiandong
authors.initials: J
authors.lastname: Ye
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China.
authors.forename: Shunming
authors.initials: S
authors.lastname: Zhu
authors.affiliation: School of Electronic Science and Engineering, Nanjing University, Nanjing, 210023, China. slgu@nju.edu.cn.
authors.forename: Shulin
authors.initials: S
authors.lastname: Gu
keywords: Chemical vapor transport; Defect identification and distribution; Microrod; Spatially resolved cathodoluminescence; Zinc oxide