Open AccessZigzag GaN/Ga2O3 heterogeneous nanowires: Synthesis, optical and gas sensing properties
Author(s) -
LiWei Chang,
Jun-Dong Chang,
J. Andrew Yeh,
HehNan Lin,
Han C. Shih
Publication year - 2011
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.3624331
Subject(s) - zigzag , nanowire , materials science , optoelectronics , band gap , wide bandgap semiconductor , gas phase , nanotechnology , chemistry , geometry , mathematics
Zigzag GaN/Ga2O3 heterogeneous nanowires (NWs) were fabricated, and the optical properties and NO gas sensing ability of the NWs were investigated. We find that NWs are most effective at 850 °C at a switching process once every 10 min (on/off = 10 min per each) with a mixture flow of NH3 and Ar. The red shift of the optical bandgap (0.66 eV) is observed from the UV-vis spectrum as the GaN phase forms. The gas sensing characteristics of the developed sensor are significantly replaced to those of other types of NO sensors reported in literature