【摘要】 碳纳米管气敏传感器在敏感性、选择性、操纵性等性能上,远胜于传统的金属氧化物膜传感器。但由于受本征碳纳米管(纯净碳纳米管)吸附能力的限制,碳纳米管气敏传感器能检测的气体种类很少。斯坦福大学的ShuPeng等人的实验发现,掺杂了B、N原子的碳纳米管第一次成功地检测出了CO和H2O分子。在详细阐述碳纳米管传感器工作机理的基础上,用半导体杂质理论和离子对吸附模型对这一最新实验结果作出理论解释。这种掺杂方法,很有可能从根本上解决碳纳米管气敏传感器检测范围小的问题。更多还原

【Abstract】 Single-walled carbon nanotube（SWNT）gas sensor is much more advanced than the traditional metal-oxide sensor in terms of sensitivity,selectivity,maneuverability,and so on.But only a few kind of gases can be detected by SWNT sensor because of the limited adsorption ablity of intrinsic carbon nanotubes（CNTS）.Currently,Shu Peng and his coworkers have found that CNTs doped with B and N atoms are able to detect H₂O and CO molecules,respectively.The Theory of Semiconductor Impurities along with an ion-pair model is used to explain this new experiment phenomenon,based on detailed discussion of the mechanism of SWNT sensors.Doping CNTs with impurity atoms maybe a key method for solving the problem of SWNT sensors.更多还原