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UV-Assisted Alcohol Sensing with Zinc Oxide Functionalized Gallium Nitride Nanowires



Ritu Bajpai, Abhishek Motayed, Albert Davydov, Kristine A. Bertness, Mona E. Zaghloul


Alcohol sensors using gallium nitride (GaN) nanowires (NWs) functionalized with zinc oxide (ZnO) nanoparticles have been demonstrated. These sensors operate at room temperature, are completely recoverable and demonstrate a response and recovery time of the order of 100 s. The sensing is assisted by UV light within the band of 215 nm- 400 nm and the intensity measured at 365 nm wavelength is 375 nW/cm^(2). The ability to functionalize an inactive nanowire surface, with analyte specific active metal oxide nanoparticles makes this sensor technique suitable for fabricating multi-analyte sensor arrays.
IEEE Electron Device Letters


Chemical sensors, nanoparticles, nanoscale devices, photoconductivity, semiconductor nanostructures


Bajpai, R. , Motayed, A. , Davydov, A. , Bertness, K. and Zaghloul, M. (2012), UV-Assisted Alcohol Sensing with Zinc Oxide Functionalized Gallium Nitride Nanowires, IEEE Electron Device Letters, [online], (Accessed April 19, 2024)
Created June 30, 2012, Updated October 12, 2021