Effect of Fluorine doping on H2S gas sensing properties of Zinc Oxide thin films deposited by Spray CVD Technique
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 8
Abstract
Structural, morphological and topographical properties of fluorine-doped ZnO nanostructure semiconductor thin films have been investigated by novel spray CVD technique. The properties of these thin films are governed by the additives of Ammonium Fluoride in non-aqueous solution of Zinc Acetate as a starting material. The crystalline structure and orientation of ZnO thin films have been investigated by X- ray diffraction (XRD) technique for varying Fluorine doping concentration in the range of 0.2 at% to 1 at% in steps of 0.2. The grain size for the films was found to be in the range of 19–23nm. Synthesis of Fluorine doping inducing transition of surface morphology is helpful in studying crystallite size, structure and phase formation by X ray diffraction pattern. For both ZnO and F: ZnO films, the dominant diffraction peak is the (002) peak at around 34.40 , confirming the strong (002) texture of these films. The surface morphology investigated by FESEM was very smooth, more compact, dense with uniform spherical grains supporting the (002) intensity maxima. The H2S gas sensing properties of the films were investigated by using homemade gas sensing unit. The dependence of H2S gas detection on the doping concentration of Fluorine doped Zinc oxide film was studied at 3000C. It is observed that response time and recovery time increases with increase in doping concentration. It is further seen that deteriorated crystallinity and surface morphology with increase in doping concentration improve the gas detection properties of Flourine doped Zinc oxide thin film
Authors and Affiliations
Sunanda C. Yadav
Keywords
Related Articles
- EP ID EP127554
- DOI -
- Views 64
- Downloads 0
Flow Enhancement in Pipeline Transportation for Heavy Crude Oil Emulsion
Stable concentrated oil-in water (O/W) emulsions were prepared and their application for heavy oil pipeline transportation was investigated using very viscous Malaysian heavy crude oil. Malaysian heavy crude oil s...
Analyzing the User Navigation Pattern from Weblogs
In a real world lot of users attracted towards online purchasing, so lots of transactions are going on in the websites. A weblog contains series of entries updated frequently by the user while accessing the websit...
VIBRATION ANALYSIS OF GEARBOX CASING USING SOFTWARE TOOL ANSYS AND FFT ANALYZE
This paper contain the study about vibration analysis for gearbox casing using finite element analysis (FEA).The aim of this paper is to apply ANSYS software to determine the natural frequency of gearbox casing.The obj...
REVIEW PAPER ON BROADBAND ANTENNA FOR MODERN WIRELESS COMMUNICATION
In this Review Paper on Broadband - Antenna is presented. There are many researchers who have contributed to the field of broadband antenna techniques in early days. Over the period of time researchers have contri...
Analyzing Forward-Error Correction Using Stochastic Epistemologies
The understanding of redundancy has investigated interrupts, and current trends suggest that the deployment of 802.11 mesh networks will soon emerge. After years of important research into jo Simulation of fiber-...