Browse

Optical and Field Emission Properties of Thin Single-Crystalline GaN Nanowires

Cited 93 time in Web of Science Cited 97 time in Scopus
Authors
Ha, Byeongchul; Seo, Sung Ho; Cho, Jung Hee; Yoon, Chong S.; Yoo, Jinkyoung; Yi, Gyu-Chul; Park, Chong Yun; Lee, Cheol Jin
Issue Date
2005-06-09
Publisher
American Chemical Society
Citation
J. Phys. Chem. B, 2005, 109(22), pp 11095–11099
Keywords
GALLIUM NITRIDE NANOWIRESCHEMICAL-VAPOR-DEPOSITIONPHASE EPITAXYNANOCRYSTALLINE GANCATALYTIC SYNTHESISOXIDE NANOWIRESLOW-TEMPERATUREFILMSPHOTOLUMINESCENCEGROWTH
Abstract
Thin high-quality gallium nitride (GaN) nanowires were synthesized by a catalytic chemical vapor deposition method. The synthesized GaN nanowires with hexagonal single-crystalline structure had thin diameters of 10-50 nm and lengths of tens of micrometers. The thin GaN nanowires revealed UV bands at 3.481 and 3.285 eV in low-temperature PL measurements due to the recombination of donor-bound excitons and donor-acceptor pairs, respectively. The blue shifts of UV bands in the low-temperature PL measurement were observed, indicating quantum confinement effects in the thin GaN nanowires which have smaller diameters than the exciton Bohr radius, 11 nm. For field emission properties of GaN nanowires, the turn-on field of GaN nanowires was 8.5 V/mu m and the current density was about 0.2 mA/cm(2) at 17.5 V/mu m, which is sufficient for the applications of field emission displays and vacuum microelectronic devices. Moreover, the GaN nanowires indicated stronger emission stability compared with carbon nanotubes.
ISSN
1520-6106 (print)
1520-5207 (online)
Language
English
URI
http://hdl.handle.net/10371/4869
DOI
https://doi.org/10.1021/jp044334c

https://doi.org/10.1021/jp044334c
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Physics and Astronomy (물리·천문학부)Physics (물리학전공)Journal Papers (저널논문_물리학전공)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse