Numerical modeling and performance analysis of zinc oxide (ZnO) thin-film based gas sensor

2018 ◽  
Author(s):  
Deepak Punetha ◽  
Rashmi Ranjan ◽  
Saurabh Kumar Pandey
Keyword(s):  
Thin Film ◽  
Numerical Modeling ◽  
Zinc Oxide ◽  
Performance Analysis ◽  
Gas Sensor ◽  
Zno Thin Film ◽  
And Performance

The Controllable Flexible Features of ZnO Thin Film Gas Sensor

2011 ◽  
Vol 335-336 ◽  
pp. 478-482 ◽  
Author(s):  
Xin Liang Cao
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Zno Thin Film ◽  
Preparation Methods

For different gas sensing, the preparation of Zinc Oxide (ZnO) thin film gas sensor has its particularity. In this paper, three kinds of preparation methods, fitting for CO and methane and CO2 sensing, are introduced. Moreover, the sensitivity is respectively analyzed as gas sensors. The reference is provided for the preparation and applications of ZnO thin film gas sensor.

Multifunctional zinc oxide thin films for high-performance UV photodetectors and nitrogen dioxide gas sensors

RSC Advances ◽  
2016 ◽  
Vol 6 (31) ◽  
pp. 25641-25650 ◽  
Author(s):  
S. K. Shaikh ◽  
V. V. Ganbavle ◽  
S. I. Inamdar ◽  
K. Y. Rajpure
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Zinc Oxide ◽  
Nitrogen Dioxide ◽  
Gas Sensor ◽  
Gas Sensors ◽  
High Performance ◽  
Zno Thin Film ◽  
Uv Photodetector ◽  
Uv Photodetectors

Multifunctional use of ZnO thin film as NO2 gas sensor and UV photodetector.

Structural and Optical Characterization of Chemically Synthesized Nanostructured Zinc Oxide Thin Film

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Akintunde Ayodeji Ajayi ◽  
Aderemi Babatunde Alabi ◽  
Olutayo Wale Abodunrin ◽  
Kazeem Adeleke Musiliyu
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Spray Pyrolysis Technique ◽  
Optical Characterization ◽  
Sem Analysis ◽  
Oxide Thin Film ◽  
Ultraviolet Region ◽  
Chemical Spray Pyrolysis ◽  
Zno Thin Film ◽  
Electron Microscopic

Zinc Oxide (ZnO) thin film has been synthesized using the chemical spray pyrolysis technique and ethylene glycol has been used as solvent during the synthesis. X-ray diffraction (XRD) results show cubic and tetragonal phases of ZnO and the grain size was calculated to be 2.57nm. Optical characterization reveals very high transmittance within the visible-ultraviolet region and a bandgap of 3.49 eV was obtained for ZnO thin film. Scanning Electron Microscopic (SEM) analysis showed a void-free non-homogenous surface.

scholarly journals Study on the effect of growth-time and seed-layers of Zinc Oxide nanostructured thin film prepared by the hydrothermal method for liquefied petroleum gas sensor application

BIBECHANA ◽  
2018 ◽  
Vol 16 ◽  
pp. 145-153
Author(s):  
Guna Nidha Gnawali ◽  
Shankar P Shrestha ◽  
Khem N Poudyal ◽  
Indra B Karki ◽  
Ishwar Koirala
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Gas Sensor ◽  
Sheet Resistance ◽  
Measurement Unit ◽  
Growth Time ◽  
Zno Nanostructures ◽  
Liquefied Petroleum Gas ◽  
Nanostructured Thin Film ◽  
Seed Layers

Gas sensors are devices that can convert the concentration of an analytic gas into an electronic signal. Zinc oxide (ZnO) is an important n-type metal oxide semiconductor which has been utilized as gas sensor for several decades. In this work, ZnO nanostructured films were synthesized by a hydrothermal route from ZnO seeds and used as a liquefied petroleum gas (LPG) sensor. At first ZnO seed layers were deposited on glass substrates by using spin coating method, then ZnO nanostructured were grown on these substrates by using hydrothermal growth method for different time duration. The effect of growth time and seed layers of ZnO nanostructured on its structural, optical, and electrical properties was studied. These nanostructures were characterized by X-ray diffraction, scanning electron microscopy, optical spectroscopy, and four probes sheet resistance measurement unit. The sensing performances of the synthetic ZnO nanostructures were investigated for LPG.XRD showed that all the ZnO nanostructures were hexagonal crystal structure with preferential orientation. SEM reviled that the size of nanostructure increased with increase in growth time. Band gap and sheet resistance for ZnO nanostructured thin film decreased with increase in growth time. ZnO nanostructured thin film showed high sensitivity towards LPG gas. The sensitivity of the film is observed to increase with increase in no of seed layers as well as growth time. The dependence of the LPG sensing properties on the different growth time of ZnO nanostructured was investigated. The sensing performances of the film were investigated by measured change in sheet resistance under expose to LPG gas. BIBECHANA 16 (2019) 145-153

A Solution Processed ZnO Thin Film

2012 ◽  
Vol 239-240 ◽  
pp. 1585-1588 ◽  
Author(s):  
Yuh Chung Hu ◽  
David T.W. Lin ◽  
Hai Lin Lee ◽  
Pei Zen Chang
Keyword(s):  
Thin Film ◽  
Aqueous Solution ◽  
Zinc Oxide ◽  
Low Cost ◽  
Zinc Acetate Dihydrate ◽  
Oxide Thin Film ◽  
Zno Thin Film ◽  
Acetate Dihydrate ◽  
Zinc Oxide Thin Film ◽  
Environmentally Friendly Process

The effect of Zinc-Oxide (ZnO) thin film annealed in different ambiences is presented. To achieve low cost and environmentally friendly process, ZnO aqueous solution is synthesized by dissolving zinc acetate dihydrate in deionized water directly. Zinc oxide aqueous solution of high solubility and stability is presented. High quality and dense Zinc oxide thin film is formed by spin coating. Annealing temperatures are in the range of 300 °C~500 °C, and annealing ambiences of both air and N2 are discussed.

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