Document Details

Document Type : Thesis 
Document Title :
Manufacturing of nanocrystalline metal oxide thin film for gas sensing application
تصنيع أغشية أكاسيد المعادن النانومترية في تطبيقات الإحساس بالغازات
 
Subject : physics department 
Document Language : Arabic 
Abstract : Wide band gap metal oxide gas sensor devices have found prevalent application. These sensor devices are being substantially monopolized for the automotive and municipal applications to control the air ventilation flutters or to monitor natural gas seepages. These implementations entail metal oxides with low price, light weight, small extent, un-convoluted, low consuming power and high sensibility to a spacious assortment of gases. In this thesis, ZnO thin films were synthesized via sol-gel spin coating technique. The influence of film thickness, annealing temperature and roughness on the sensitivity of ZnO films were studied. The influence of various gases such as (H2S, NH3, H2 and CH3OH) on the electrical traits of ZnO film has been scrutinized. The results depicted that ZnO thin film has high sensitivity for H2S gas at thickness of 186 nm when annealed at 650oC. The sensor showed fast response time, high stability and reproducibility. The sensitivity as a function of gas concentration showed a linear regression with correlation factor R2=0.99. According to the obtained results one can conclude that low cost, high sensitivity, fast response and relative simplicity ZnO sensor device were obtained for detection of H2S gas at ambient temperature. 
Supervisor : Dr.Waleed Elsayed mahmoud 
Thesis Type : Master Thesis 
Publishing Year : 1434 AH
2013 AD 
Co-Supervisor : Dr . Saleh Hedihed Salman Al-Heniti 
Added Date : Saturday, March 16, 2013 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
صالح أحمد الغامديAl-ghamdi, Saleh AhmadResearcherMaster 

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 35225.pdf pdf 

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