| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1443261 | Synthetic Metals | 2008 | 5 Pages |
Abstract
We observed the green and orange-red light emission from the single strand of doped and de-doped poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires, respectively, by means of the laser confocal microscope photoluminescence (PL) experiments. Light-emitting PEDOT nanowires were electrochemically synthesized and the doping level of the systems was electrochemically controlled through cyclic voltammetry in a solution of 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) ionic liquid. From the ultraviolet and visible absorbance spectra, we observed the bipolaron band and the Ï-Ï* transition peaks for the doped and de-doped PEDOT nanowires, respectively. The PL intensity of the de-doped PEDOT single nanowire was 2-3 times higher than that of the doped one. Comparing the PL intensities of the fresh and aged PEDOT single nanowire, we observed the relatively long-term stable light emission from the PEDOT nanowires.
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Authors
Dong Hyuk Park, Hyun Seung Kim, Yong Baek Lee, Jung Min Ko, Jun-Young Lee, Hyun-Jun Kim, Dae-Chul Kim, Jeongyong Kim, Jinsoo Joo,