title: Facile synthesis and enhanced ultraviolet emission of ZnO nanorods prepared by vapor-confined face-to-face annealing.
abstract: In this study, we report a novel regrowth method of sol-gel-prepared ZnO films using a vapor-confined face-to-face annealing (VC-FTFA) technique in which mica was inserted between two films, followed by annealing with the FTFA method. The ZnO nanorods are regrown when zinc acetate dihydrate and zinc chloride (ZnCl2) are used as the solvent, because these generate ZnCl2 vapor. The near-band-edge emission intensity of the ZnO nanorods was enhanced through the VC-FTFA method, increasing significantly by a factor of 56 compared to that of ZnO films annealed in open air at 700 °C. Our method may provide a route toward the facile fabrication of ZnO nanorods.
authors.affiliation: Department of Nanoscience & Engineering, Inje University , 197, Inje-ro, Gimhae-si, Gyeongsangnam-do 621-749, Republic of Korea.
authors.forename: Giwoong
authors.initials: G
authors.lastname: Nam
authors.forename: Youngbin
authors.initials: Y
authors.lastname: Park
authors.forename: Iksoo
authors.initials: I
authors.lastname: Ji
authors.forename: Byunggu
authors.initials: B
authors.lastname: Kim
authors.forename: Sang-Heon
authors.initials: SH
authors.lastname: Lee
authors.forename: Do Yeob
authors.initials: DY
authors.lastname: Kim
authors.forename: Soaram
authors.initials: S
authors.lastname: Kim
authors.forename: Sung-O
authors.initials: SO
authors.lastname: Kim
authors.forename: Jae-Young
authors.initials: JY
authors.lastname: Leem
keywords: photoluminescence; regrowth; spin-coating method; zinc chloride; zinc oxide