Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (10): 1603-1606.doi: 10.3866/PKU.WHXB20071021

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Electrical Transport Properties of Individual TiO2 Nanowire in One Dimension

SUN Lan; ZUO Juan; LAI Yue-Kun; NIE Cha-Geng; LIN Chang-Jian   

  1. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005,P. R. China
  • Received:2007-02-23 Revised:2007-06-11 Published:2007-10-01
  • Contact: LIN Chang-Jian

Abstract: The anatase TiO2 nanowire arrays with 60 nm diameter and 20 nm diameter were prepared within the nanochannels of anodic aluminumoxide (AAO) template by an electrochemically induced sol-gel method. Atomic force microscopy (AFM) technique was applied to map topographic image at half-contact mode and to measure current-voltage characteristics of individual TiO2 nanowire at contact mode. The I -V characteristics of individual TiO2 nanowire by AFM revealed semiconductor characteristics. The bias voltage resulting in a measurable current on individual TiO2 nanowire was much lower than that on the bulk TiO2 materials, and its value increased with the diameter of individual nanowire decreasing.

Key words: Individual nanowire in one dimension, TiO2, Electrical transport property, I-V curve