title: Electrical and structural properties of antimony-doped p-type ZnO nanorods with self-corrugated surfaces.
abstract: We report on p-type conductivity in antimony (Sb)-doped ZnO (ZnO:Sb) nanorods which have self-corrugated surfaces. The p-ZnO:Sb/n-ZnO nanorod diode shows good rectification characteristics, confirming that a p-n homojunction is formed in the ZnO nanorod diode. The low-temperature photoluminescence (PL) spectra of the ZnO:Sb nanorods reveal that the p-type conductivity in p-ZnO:Sb is related to the Sb(Zn)-2V(Zn) complex acceptors. Transmission electron microscopy (TEM) analysis of the ZnO:Sb nanorods also shows that the p-type conductivity is attributed to the Sb(Zn)-2V(Zn) complex acceptors which can be easily formed near the self-corrugated surface regions of ZnO:Sb nanorods. These results suggest that the Sb(Zn)-2V(Zn) complex acceptors are mainly responsible for the p-type conductivity in ZnO:Sb nanorods which have corrugated surfaces.
authors.affiliation: School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea.
authors.forename: Jang-Won
authors.initials: JW
authors.lastname: Kang
authors.forename: Yong-Seok
authors.initials: YS
authors.lastname: Choi
authors.forename: Minhyeok
authors.initials: M
authors.lastname: Choe
authors.forename: Na-Yeong
authors.initials: NY
authors.lastname: Kim
authors.forename: Takhee
authors.initials: T
authors.lastname: Lee
authors.forename: Bong-Joong
authors.initials: BJ
authors.lastname: Kim
authors.forename: C W
authors.initials: CW
authors.lastname: Tu
authors.forename: Seong-Ju
authors.initials: SJ
authors.lastname: Park
mesh_terms: D000965:Antimony / Q000737:chemistry*; D004553:Electric Conductivity; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012666:Semiconductors; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D000965:Antimony; D015034:Zinc Oxide