| EPSRC Reference: |
GR/M81922/01 |
| Title: |
ELECTRO-OPTICAL CHARACTERISATION OF CONJUGATED POLYMER HETEROGENEOUS STRUCTURES WITH A SNOM |
| Principal Investigator: |
Cacialli, Professor F |
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| Department: |
Physics |
| Organisation: |
University of Cambridge |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 2000 |
Ends: |
30 September 2001 |
Value (£): |
86,923
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| EPSRC Research Topic Classifications: |
| Materials Characterisation |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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This project aims to provide:1. An optical characterisation of heterogeneous conjugated systems, for which a degree of phase separation between chemically different moieties with different electronic functions is expected. The primary and illustrative focus will be a mixture of poly(9,9'-dioctylfluorene), PFO with alkoxy-substituted PPV derivatives in various concentrations. We plan to study the influence of the components' relative concentration and of different substrate surface energy on phase separation. The measurable objective is the determination of the existence of aggregates of the polymeric components of sizes detectable within the instrumental resolution and their effect on the local electroluminescence of the blend. A related target is the characterisation of the order of the chromophores with respect to that of the host by means of polarisation-modulation scanning near-field optical microscopy.2. A characterisation of photoinduced charge generation and transport in heterogeneous polymer systems. The illustrative focus is the charge generation at the interface between pristine and photo-oxidised poly(p-phenylene vinylene), PPV. We plan to characterise the exciton dissociation in a planar geometry, rather than in a sandwich structure, the major advantage being the elimination of spurious effects introduced by the electrodes and related charge ionisation at polymer/electrode interfaces.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cam.ac.uk |