Voltage-Modulated Millimeter-Wave Spectroscopy on a Polymer Diode: Mesoscopic Charge Transport in Conjugated Polymers
| Autor: | P.W.M. Blom, O. Hilt, J. N. Huiberts, H. B. Brom, H. C. F. Martens |
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| Přispěvatelé: | Zernike Institute for Advanced Materials |
| Rok vydání: | 2001 |
| Předmět: |
chemistry.chemical_classification
Electron mobility Mesoscopic physics Materials science business.industry Terahertz radiation ELECTRIC-FIELD DEPENDENCE LIGHT-EMITTING-DIODES General Physics and Astronomy CROSSOVER Poly(p-phenylene vinylene) POLY(P-PHENYLENE VINYLENE) Polymer chemistry.chemical_compound chemistry MOBILITY ELECTROLUMINESCENCE Optoelectronics THZ business Spectroscopy Absorption (electromagnetic radiation) COMPLEX DIELECTRIC-CONSTANT HOLE TRANSPORT Diode |
| Zdroj: | Physical Review Letters, 87(8):086601, art-086601. AMER PHYSICAL SOC |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.87.086601 |
| Popis: | We present a new technique to determine the carrier mobility mu in semiconducting, undoped, conjugated polymers in the millimeter-wave frequency range, 10-500 GHz. This method probes charge conduction on mesoscopic length scales, a regime inaccessible to other transport experiments. The experiment is based on the detection of millimeter-wave absorption of field-induced charge in polymer diodes, and is applied to poly( p-phenylene vinylene). We demonstrate that locally mu can be as high as 10(-4) m(2)/V s, and deduce the typical hopping parameters in the mesoscopic high- mu regions in the material. |
| Databáze: | OpenAIRE |
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