The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices
The transport properties of the blended polyfluorene layers were studied using layered structures containing both pristine and the blended layers. It was shown that for a polymer blend device where there is a fine scale of phase separation, only charges generated close to either electrode can be col...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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2004
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| _version_ | 1826276154346045440 |
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| author | Snaith, H Greenham, N Friend, R |
| author_facet | Snaith, H Greenham, N Friend, R |
| author_sort | Snaith, H |
| collection | OXFORD |
| description | The transport properties of the blended polyfluorene layers were studied using layered structures containing both pristine and the blended layers. It was shown that for a polymer blend device where there is a fine scale of phase separation, only charges generated close to either electrode can be collected. The open-circuit voltage of a polymer blend device was found to be lower than that of a bi-layer device as a result of direct paths from cathode to anode of each component of the blend. The results show that a charge injection barrier from the electrodes into the polymer film helps to retain a high open-circuit voltage in the blend. |
| first_indexed | 2024-03-06T23:09:44Z |
| format | Journal article |
| id | oxford-uuid:650a23c5-dca8-4c50-9490-7313a450633f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:09:44Z |
| publishDate | 2004 |
| record_format | dspace |
| spelling | oxford-uuid:650a23c5-dca8-4c50-9490-7313a450633f2022-03-26T18:22:58ZThe origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devicesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:650a23c5-dca8-4c50-9490-7313a450633fEnglishSymplectic Elements at Oxford2004Snaith, HGreenham, NFriend, RThe transport properties of the blended polyfluorene layers were studied using layered structures containing both pristine and the blended layers. It was shown that for a polymer blend device where there is a fine scale of phase separation, only charges generated close to either electrode can be collected. The open-circuit voltage of a polymer blend device was found to be lower than that of a bi-layer device as a result of direct paths from cathode to anode of each component of the blend. The results show that a charge injection barrier from the electrodes into the polymer film helps to retain a high open-circuit voltage in the blend. |
| spellingShingle | Snaith, H Greenham, N Friend, R The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title | The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title_full | The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title_fullStr | The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title_full_unstemmed | The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title_short | The origin of collected charge and open-circuit voltage in blended polyfluorene photovoltaic devices |
| title_sort | origin of collected charge and open circuit voltage in blended polyfluorene photovoltaic devices |
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