Electrical Properties and UV Response of Single ZnO Nanorod

Hong Quang Le; Soo Jin Chua

doi:10.4028/www.scientific.net/AMR.31.192

Paper Titles

Development of Fabrication Process and Electrostatic Microactuator for a Mechanically Tunable 2-D Photonic Crystal
p.179

Nano-Scale Bandgap Engineering Using Nitrogen Implantation: Quantum-Well, Quantum-Dash and Quantum-Dot Nanostructures
p.182

Higher Crystalline Volume Yields from Excimer Laser Crystallization of Amorphous Silicon with an Asymmetrical Peak Pulse Profile
p.185

Distributed Feedback Laser Using Buried Dielectric Grating
p.189

Electrical Properties and UV Response of Single ZnO Nanorod
p.192

Population Dynamics of Excitons in Silicon Nanocrystals Structures under Strong Optical Excitation
p.196

Investigation of Morphology and Photoluminescence of Hydrothermally-Grown ZnO Nanorods Grown on Substrates Pre-Coated with ZnO Nanoparticles
p.199

Dicing Laminated Wafer for QFN 3D Stacked Die Packaging
p.202

DFB Waveguide All-Optical Switching Devices Employing Pump-Induced Refractive Index Change in GaInAsP
p.206

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 31Electrical Properties and UV Response of Single...

Electrical Properties and UV Response of Single ZnO Nanorod

Abstract:

Single ZnO nanorods with diameters of 100nm were directly grown on GaN surface by using low-temperature hydrothermal synthesis. Individual nanorods were removed from the substrate and placed between the Au contact pads and the current voltage measurement was proceeded to characterize the electrical properties of the ZnO nanorods. By using thermionic field emission model of Padovani and Stratton , the resistivity, carrier concentration, electron mobility can be extracted with the values of 0.14 Ωcm, 9.2x1016/cm3,33.82cm2V-1s-1, respectively. The single ZnO nanorods also showed high sensitivity to the UV light (325nm). Under the UV illumination, the UV induced current increase nearly 10 times than the dark current. In addition, the nanorods also exhibited a slow UV response due to the effects of the oxygen ions on the surface of the nanorods.