Plasmon-Induced Conductance Switching of an Electroactive Conjugated Polymer Nanojunction
| Autor: | Jalal Ghilane, Van-Quynh Nguyen, Jean-Christophe Lacroix, Yong Ai, Pierre Camille Lacaze |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Nanowire Molecular electronics Conductance Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Indium tin oxide Light intensity PEDOT:PSS Colloidal gold Optoelectronics General Materials Science 0210 nano-technology business Plasmon |
| Zdroj: | ACS Applied Materials & Interfaces. 9:27817-27824 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.7b04695 |
| Popis: | A plasmonic molecular electronic device, consisting of poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires bridging an ultramicroelectrode and an indium tin oxide (ITO) substrate covered by gold nanoparticles (Au NPs), has been developed. Light irradiation of this device has a dramatic impact on its conductance. Polymer strands, maintained electrochemically in their oxidized, conducting state, reversibly switch to their insulating state upon irradiation by visible-wavelength light, resulting in a sharp decrease in the conductance. The high-conductance state is restored when the light is turned off. Switching depends on the wavelength and the intensity of the incident light. It is due to reversible reduction of the nanosized region of PEDOT nanowires in contact with a gold NP and is attributed to plasmon-induced hot-electron injection into the PEDOT. The high/low conductance ratio can be as great as 1000, and switching requires low light intensity (220 W/m2). These results could open the way to the design o... |
| Databáze: | OpenAIRE |
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