钛酸钠纳米线的电传输特性研究

Electrical Transport Studies of Sodium Titanate Nanowires

利用电子束光刻技术制作了基于钛酸钠纳米线的纳米器件。分别在大气和真空两种环境下测量了该器件的电学特性,发现器件所处的气体环境可以影响其电传输特性,这可能是由于纳米线表面的氧分子吸附造成的。另外,还研究了紫外光(UV)照射纳米线对器件电学特性的影响,发现紫外光可以使纳米线产生很大的光电导。研究表明上述纳米器件可用作气体探测器和光电探测器。

Individual sodium titanate nanowire-based device is fabricated via e-beam lithography techniques. The authors measure their eleetrieal transport properties in air and in vaeuum respeetively and find that the eleetrieal transport of sodium titanate nanowires deviees is affeeted. This is attributed to oxygen adsorption on the surfaee of nanowire. In addition, the authors study ultraviolet（UV） light response of sodium titanate nanowire-based deviees and find that UV light may induee a large photoeonduetivity. The work shows that sodium titanate nanowires may be used potentially as gas sensors and photoeleetrie sensors.