材料科学
纳米管
湿度
碳纳米管
纳米技术
晶体管
场效应晶体管
热传导
光电子学
复合材料
电气工程
电压
物理
工程类
热力学
作者
Feng‐Xia Liang,Lin‐Bao Luo,C.L. Tsang,Lingxia Zheng,Hua Cheng,Yang Yang Li
标识
DOI:10.1016/j.materresbull.2011.10.006
摘要
TiO2 nanotubes are the building units of various devices of energy- and environment-related applications and the property studies of individual TiO2 nanotubes are important to understand and improve the performance of TiO2 nanotubes-based devices. Here we report the electrical property study of individual TiO2 nanotubes enabled by the construction of field effect transistors based on individual TiO2 nanotubes. It is found that individual TiO2 nanotubes exhibit typical n-type electrical conduction characteristics, with electron mobility of 6.9 × 10−3 cm2/V s at Vds = 1 V, and electron concentration of 2.8 × 1017 cm−3. Moreover, the on–off ratio of the TiO2 nanotube-based field effect transistors is as high as 103. Humidity sensing test shows the sensitive response of the individual TiO2 nanotubes to water vapor.
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