| EPSRC Reference: |
GR/K57428/01 |
| Title: |
CHARACTERISATION OF DEFECT STATES IN ELECTROLUMINESCENT CONJUGATED POLYMERS AND OLIGOMERS |
| Principal Investigator: |
Bradley, Professor DD |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 September 1995 |
Ends: |
31 August 1998 |
Value (£): |
182,671
|
| EPSRC Research Topic Classifications: |
| Materials Characterisation |
|
|
| EPSRC Industrial Sector Classifications: |
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
The project will focus on detailed characterisation of the trap states and defect recombination centres found within conjugated polymer and oligomer films and the effects that they have on carrier injection, carrier transport, carrier combination, and subsequent exciton decay in electroluminescent diodes. This area has been little addressed in previous studies, though it is of great importance in establishing the suitability of new materials for device application, and in determining the optimal material processing and device fabrication protocols. It will also provide feedback to new and modified synthesis procedures. The studies to be undertaken will address the energetic positions, abundance spatial distribution and uniformity of distribution and charge state of traps and recombination centres and the dependence of their formation and nature on the processing and device fabrication procedures. The experimental methodology on which we propose to focus, namely Deep Level Transient Spectroscopy (DLTS) and related optical techniques, is one that is well established for inorganic semiconductors but it has not been used to study conjugated polymers before. The resulting insights will be of widespread interest to those working on the development of organic EL devices.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.shef.ac.uk |