title: Playing with dimensions: rational design for heteroepitaxial p-n junctions.
abstract: A design for a heteroepitaxial junction by the way of one-dimensional wurzite on a two-dimensional spinel structure in a low-temperature solution process was introduced, and it's capability was confirmed by successful fabrication of a diode consisting of p-type cobalt oxide (Co(3)O(4)) nanoplate/n-type zinc oxide (ZnO) nanorods, showing reasonable electrical performance. During thermal decomposition, the 30° rotated lattice orientation of Co(3)O(4) nanoplates from the orientation of β-Co(OH)(2) nanoplates was directly observed using high-resolution transmission electron microscopy. The epitaxial relations and the surface stress-induced ZnO nanowire growth on Co(3)O(4) were well supported using the first-principles calculations. Over the large area, (0001) preferred oriented ZnO nanorods epitaxially grown on the (111) plane of Co(3)O(4) nanoplates were experimentally obtained. Using this epitaxial p-n junction, a diode was fabricated. The ideality factor, turn-on voltage, and rectifying ratio of the diode were measured to be 2.38, 2.5 V and 10(4), respectively.
authors.affiliation: Department of Materials Science and Engineering, Yonsei University, Seoul, Korea.
authors.forename: Tae Il
authors.initials: TI
authors.lastname: Lee
authors.forename: Sang Hoon
authors.initials: SH
authors.lastname: Lee
authors.forename: Young-Dong
authors.initials: YD
authors.lastname: Kim
authors.forename: Woo Soon
authors.initials: WS
authors.lastname: Jang
authors.forename: Jin Young
authors.initials: JY
authors.lastname: Oh
authors.forename: Hong Koo
authors.initials: HK
authors.lastname: Baik
authors.forename: Catherine
authors.initials: C
authors.lastname: Stampfl
authors.forename: Aloysius
authors.initials: A
authors.lastname: Soon
authors.forename: Jae Min
authors.initials: JM
authors.lastname: Myoung
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D012666:Semiconductors; D013499:Surface Properties; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D010087:Oxides; D003035:Cobalt; D015034:Zinc Oxide; C060728:cobalt oxide