Preparation and Characterization of ZnO Nanowires and their Applications in CO2 Gas Sensors. (2015)

• Record Type: Journal Article
• Authors: Habib, Muhammad; Hussain, Syed Sajjad; Riaz, Saira; Naseem, Shahzad
• Is Part Of: Materials today. Volume 2:Number 10(2015)Part B
• Page Start: 5714
• Page End: 5719
• Publication Date: 2015
• Subjects: CO2 Gas sensor -- ZnO Nanowires -- Sol-Gel -- Template assisted growth -- Fast response/ recovery; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.11.116
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: CO2 gas sensor based on multiple ZnO nanowires was fabricated using sol-gel technique. ZnO nanowires were grown with AAO template. Ti/Al electrodes were deposited on un-doped Si substrate separately. Nanowires were deposited on these electrodes by simple drop coat technique. Crystallographic structure, surface morphology, I-V characteristics of nanowires were determined by XRD, SEM and source meter respectively. Gas sensing measurements of as-grown and annealed nanowires were taken at different temperatures and gas flow rates with self-designed gas chamber. Gas sensor showed good sensitivity of 3.8% at 15 lit/min gas flow at 200 o C. Sensor showed fast response and recovery time of 8s and 40s respectively.