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http://dx.doi.org/10.4313/TEEM.2015.16.6.334

Comparison of Ga-doped and Ag-doped ZnO Nanowire Gas-sensor Sensitivity and Selectivity  

Lee, Sang Yeol (Department of Semiconductor Engineering, Cheongju University)
Publication Information
Transactions on Electrical and Electronic Materials / v.16, no.6, 2015 , pp. 334-337 More about this Journal
Abstract
Pure ZnO, ZnO nanowires doped with 3 wt.% Ga (3GZO) and doped with 3 wt.% Ag (3SZO) were grown by a hot-walled pulse laser deposition (HW-PLD) technique. The optical and chemical properties of Ga and Ag doped nanowires was analyzed. Nanowires were determined to be under 200 nm in diameter and several μm in length. Change of significant resistance was observed and the gas detection sensitivities of ZnO, 3GZO and 3SZO nanawires were compared. The sensitivities of ZnO, 3GZO, and 3SZO nanowire sensors were measured at 300℃ for 1 ppm of ethanol gas at 97%, 48%, and 203%, respectively.
Keywords
Ga-doped ZnO; Ag-doped ZnO; Nanowires; Ethanol gas sensor; Hot walled pulsed laser deposition;
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