Characterization of Gold-Sputtered Zinc Oxide Nanorods-a Potential Hybrid Material

Nanoscale Research Letters
Veeradasan PerumalRuslinda Abdul Rahim

Abstract

Generation of hybrid nanostructures has been attested as a promising approach to develop high-performance sensing substrates. Herein, hybrid zinc oxide (ZnO) nanorod dopants with different gold (Au) thicknesses were grown on silicon wafer and studied for their impact on physical, optical and electrical characteristics. Structural patterns displayed that ZnO crystal lattice is in preferred c-axis orientation and proved the higher purities. Observations under field emission scanning electron microscopy revealed the coverage of ZnO nanorods by Au-spots having diameters in the average ranges of 5-10 nm, as determined under transmission electron microscopy. Impedance spectroscopic analysis of Au-sputtered ZnO nanorods was carried out in the frequency range of 1 to 100 MHz with applied AC amplitude of 1 V RMS. The obtained results showed significant changes in the electrical properties (conductance and dielectric constant) with nanostructures. A clear demonstration with 30-nm thickness of Au-sputtering was apparent to be ideal for downstream applications, due to the lowest variation in resistance value of grain boundary, which has dynamic and superior characteristics.

References

Jul 22, 2008·Journal of Colloid and Interface Science·Guiye ShanYichun Liu
May 21, 2009·Analytical Chemistry·Subash C B GopinathPenmetcha K R Kumar
Aug 20, 2010·Optics Express·Makoto FujimakiYoshimichi Ohki
Mar 23, 2012·Sensors·Subash C B GopinathMakoto Fujimaki
Feb 13, 2013·Nanoscale Research Letters·Muhammad KashifSharifah Bee Abd Hamid
Aug 21, 2013·Biosensors & Bioelectronics·Subash C B GopinathKoichi Awazu
Jan 16, 2014·Nanoscale Research Letters·Qazi HumayunAhsanulhaq Qurashi
Mar 13, 2014·Nanoscale Research Letters·Xianhong WangJunhua Wu
Apr 23, 2014·Advanced Materials·Ruibin JiangJianfang Wang
Jul 17, 2015·Scientific Reports·Veeradasan PerumalP Poopalan
Nov 13, 2015·Biosensors & Bioelectronics·Sharma Rao BalakrishnanA R Ruslinda
Nov 20, 2015·Biosensors & Bioelectronics·Veeradasan PerumalA R Ruslinda

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Methods Mentioned

BETA
biosensors
scanning electron microscopy
transmission
electron diffraction
X-ray

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