Effects of electron-beam irradiation on conducting polypyrrole nanowires
- Authors
- Hong, Young Ki; Park, Dong Hyuk; Park, Se Hee; Park, Soung Kyu; Joo, Jinsoo
- Issue Date
- 2-2월-2009
- Publisher
- AMER INST PHYSICS
- Keywords
- conducting polymers; electrical resistivity; electron beam effects; nanowires; Raman spectra; semiconductor doping; semiconductor quantum wires; ultraviolet spectra; visible spectra
- Citation
- APPLIED PHYSICS LETTERS, v.94, no.5
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 94
- Number
- 5
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120595
- DOI
- 10.1063/1.3077589
- ISSN
- 0003-6951
- Abstract
- Conducting polypyrrole (PPy) nanowires (NWs) were irradiated by a relatively high energy (300 keV-2 MeV) electron-beam (e-beam) generated from a linear electron accelerator in an atmospheric environment. From the current-voltage characteristics of pristine and 2 MeV e-beam irradiated PPy NWs, we observed a dramatic variation in resistance from 8.0x10(2) to 1.45x10(8) Omega, that is, we observed a transition from conducting states to nonconducting states through the e-beam irradiation. To discern conformational changes and the doping states of PPy NWs through the e-beam irradiation, we measured Raman and ultraviolet-visible absorption spectra for the PPy NWs. As the energy of the e-beam irradiation increased, we observed that the PPy NWs were changed from doping states to dedoping states with conformational modification including the variation in pi-conjugation length.
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Collections - College of Science > Department of Physics > 1. Journal Articles
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