电解液栅型碳纳米管场效应晶体管的实验研究

由于碳纳米管具有独特的结构和性能,因而一直受到人们的关注.对于包括碳纳米管场效应管在内的分子元件的研究方面尤其令人注目.笔者研究了具有电解液栅的碳纳米管场效应晶体管,研究中所用的碳纳米管是用热灯丝化学气相沉积法(CVD)合成的.衬底材料是平面玻璃,Fe/Ni混合物用作催化剂.对具有Ag电极的多壁碳纳米管晶体管作了优化设计制造,并利用KCl溶液作为栅极.实验结果表明,电解液栅型碳纳米管晶体管(FET)呈现出良好的电流-电压特性曲线.在栅压2 V时,其跨导约为0.5 mA/V.并对获得的研究结果进行了讨论.

Experimental Studies on Electrolyte-gated Carbon Nanotube Field Effect Transitors

Owing to unique structure and characteristic of carbon nanotubes, much more are attractions, especially in molecular elements, including field effect transitorsmade of carbon nanotubes. Carbon nanotube field effect transitors with electrolyte-gated are investgated. Carbon nanotubes on glass substrate in this study are fabricated by hot filament vapor deposition using Fe / Ni as catalyst. Optimized multi-walled carbon nanobute transistors are made with Ag contact electrodes, and the KCl solution is used as a gate. Experimental results show that the electrolyte-gated carbon nanotube transitors exhibited a good voltage-current characteristic. The transconductance is about 0.5 mA/V at 2 V. The results obtained are discussed.