title: Stable p-type properties of single walled carbon nanotubes by electrochemical doping.
abstract: We report a highly stable p-type doping for single walled carbon nanotubes using an electrochemical method. The Raman spectroscopy showed the upshift of the G-band when the applied potential increased. Furthermore, the carbon core level shifted as much as 0.14 eV in binding energy of XPS measurement, which is an evidence of p-type doping with a Fermi level change. The highly doped SWCNTs at an applied potential of 1.5 V during the electrochemical doping process showed long time stability, as long as 28 days.
authors.affiliation: Department of Physics and Research Institute for Natural Science, Hanyang University, Seoul 133-791, Republic of Korea. ek-kim@hanyang.ac.kr.
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Park
authors.affiliation: School of Electrical Engineering, Korea University, Seoul 136-701, Republic of Korea. cjlee@korea.ac.kr.
authors.forename: Cheol Jin
authors.initials: CJ
authors.lastname: Lee
authors.affiliation: Department of Physics and Research Institute for Natural Science, Hanyang University, Seoul 133-791, Republic of Korea. ek-kim@hanyang.ac.kr.
authors.forename: Eun Kyu
authors.initials: EK
authors.lastname: Kim