Spatial distribution of space charge in conjugated polymers
We demonstrate the pyroelectric effect in a conjugated polymer, poly(2,5-pyridinediyl) (PPY), and we use the laser intensity modulation method (LIMM) to resolve the spatial distribution of electric field and space charges inside a 5 μm Au/PPY/Au sandwich device. The pyroelectric signal shows hystere...
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| Veröffentlicht in: | Applied physics letters 2001-08, Vol.79 (6), p.779-781 |
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| container_title | Applied physics letters |
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| creator | Feller, F. Geschke, D. Monkman, A. P. |
| description | We demonstrate the pyroelectric effect in a conjugated polymer, poly(2,5-pyridinediyl) (PPY), and we use the laser intensity modulation method (LIMM) to resolve the spatial distribution of electric field and space charges inside a 5 μm Au/PPY/Au sandwich device. The pyroelectric signal shows hysteresis behavior with respect to the applied bias indicating permanent storage of injected charges. From the analysis of the LIMM spectra we conclude that application of a bias leads to the accumulation of space charges near the electrodes, while a zone of opposite space charge may establish in a distance of about 1 μm from it. The charged state retains after removing the bias and can lead to an internal electric field that is opposite to the external poling field in the bulk of the polymer film. |
| doi_str_mv | 10.1063/1.1391399 |
| format | Article |
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P.</creatorcontrib><title>Spatial distribution of space charge in conjugated polymers</title><title>Applied physics letters</title><description>We demonstrate the pyroelectric effect in a conjugated polymer, poly(2,5-pyridinediyl) (PPY), and we use the laser intensity modulation method (LIMM) to resolve the spatial distribution of electric field and space charges inside a 5 μm Au/PPY/Au sandwich device. The pyroelectric signal shows hysteresis behavior with respect to the applied bias indicating permanent storage of injected charges. From the analysis of the LIMM spectra we conclude that application of a bias leads to the accumulation of space charges near the electrodes, while a zone of opposite space charge may establish in a distance of about 1 μm from it. 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The pyroelectric signal shows hysteresis behavior with respect to the applied bias indicating permanent storage of injected charges. From the analysis of the LIMM spectra we conclude that application of a bias leads to the accumulation of space charges near the electrodes, while a zone of opposite space charge may establish in a distance of about 1 μm from it. The charged state retains after removing the bias and can lead to an internal electric field that is opposite to the external poling field in the bulk of the polymer film.</abstract><cop>United States</cop><pub>The American Physical Society</pub><doi>10.1063/1.1391399</doi><tpages>3</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2001-08, Vol.79 (6), p.779-781 |
| issn | 0003-6951 1077-3118 |
| language | eng |
| recordid | cdi_osti_scitechconnect_40230702 |
| source | AIP Journals Complete; AIP Digital Archive |
| subjects | CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ELECTRIC FIELDS ELECTRODES HYSTERESIS LASERS MODULATION PHYSICS POLYMERS SPACE CHARGE SPATIAL DISTRIBUTION SPECTRA STORAGE |
| title | Spatial distribution of space charge in conjugated polymers |
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