title: High-quality, highly concentrated semiconducting single-wall carbon nanotubes for use in field effect transistors and biosensors.
abstract: We developed a simple and scalable selective synthesis method of high-quality, highly concentrated semiconducting single-wall carbon nanotubes (s-SWCNTs) by in situ hydrogen etching. Samples containing ~93% s-SWCNTs were obtained in bulk. These s-SWCNTs with good structural integrity showed a high oxidation resistance temperature of ~800 °C. Thin-film transistors based on the s-SWCNTs demonstrated a high carrier mobility of 21.1 cm(2) V(-1) s(-1) at an on/off ratio of 1.1 × 10(4) and a high on/off ratio of 4.0 × 10(5) with a carrier mobility of 7.0 cm(2) V(-1) s(-1). A biosensor fabricated using the s-SWCNTs had a very low dopamine detection limit of 10(-18) mol/L at room temperature.
authors.affiliation: Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China.
authors.forename: Wen-Shan
authors.initials: WS
authors.lastname: Li
authors.forename: Peng-Xiang
authors.initials: PX
authors.lastname: Hou
authors.forename: Chang
authors.initials: C
authors.lastname: Liu
authors.forename: Dong-Ming
authors.initials: DM
authors.lastname: Sun
authors.forename: Jiangtan
authors.initials: J
authors.lastname: Yuan
authors.forename: Shi-Yong
authors.initials: SY
authors.lastname: Zhao
authors.forename: Li-Chang
authors.initials: LC
authors.lastname: Yin
authors.forename: Hongtao
authors.initials: H
authors.lastname: Cong
authors.forename: Hui-Ming
authors.initials: HM
authors.lastname: Cheng
mesh_terms: D015374:Biosensing Techniques; D004298:Dopamine / Q000032:analysis* / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D008422:Materials Testing; D046529:Microscopy, Electron, Transmission; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D010316:Particle Size; D012666:Semiconductors; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014173:Transistors, Electronic
chemical_list: D037742:Nanotubes, Carbon; D006859:Hydrogen; D010100:Oxygen; D004298:Dopamine