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

被引：7
|
作者：
Bajpai, Ritu [1 ]
Motayed, Abhishek [2 ,3 ]
Davydov, Albert V. [3 ]
Bertness, Kris A. [4 ]
Zaghloul, Mona E. [1 ]
机构：
[1] George Washington Univ, Dept Elect & Comp Engn, Washington, DC 20052 USA
[2] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 USA
[3] NIST, Mat Measurement Lab, Gaithersburg, MD 20899 USA
[4] NIST, Phys Measurement Lab, Boulder, CO 80305 USA
来源：
IEEE ELECTRON DEVICE LETTERS | 2012年 / 33卷 / 07期
关键词：
Chemical sensors; nanoparticles; nanoscale devices; photoconductivity; semiconductor nanostructures;
D O I：
10.1109/LED.2012.2194129
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Alcohol sensors using gallium nitride (GaN) nanowires (NWs) functionalized with zinc oxide (ZnO) nanoparticles have been demonstrated. These sensors operate at room temperature, are fully recoverable, and demonstrate a response and recovery time on the order of 100 s. The sensing is assisted by UV light within the 215-400-nm band and with the intensity of 375 nW/cm(2) measured at 365 nm. The ability to functionalize an inactive NW surface, with analyte-specific active metal-oxide nanoparticles, makes this sensor technique suitable for fabricating multianalyte sensor arrays.
引用
收藏
页码：1075 / 1077
页数：3
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