Detection of NO2 down to ppb levels using individual and multiple In2O3 nanowire devices

被引:803
作者
Zhang, DH [1 ]
Liu, ZQ [1 ]
Li, C [1 ]
Tang, T [1 ]
Liu, XL [1 ]
Han, S [1 ]
Lei, B [1 ]
Zhou, CW [1 ]
机构
[1] Univ So Calif, Dept EE Electrophys, Los Angeles, CA 90089 USA
关键词
D O I
10.1021/nl0489283
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate detection of NO2 down to ppb levels using transistors based on both single and multiple In2O3 nanowires operating at room temperature. This represents orders-of-magnitude improvement over previously reported metal oxide film or nanowire/nanobelt sensors. A comparison between the single and multiple nanowire sensors reveals that the latter have numerous advantages in terms of great reliability, high sensitivity, and simplicity in fabrication. Furthermore, selective detection of NO2 can be readily achieved with multiple-nanowire sensors even with other common chemicals such as NH3, O-2, CO, and H-2 around.
引用
收藏
页码:1919 / 1924
页数:6
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