| EPSRC Reference: |
GR/R25712/01 |
| Title: |
High-Performance Light Sources Based On Conjugated Polymer Light-Emitting Diodes |
| Principal Investigator: |
Lidzey, Professor D |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 February 2002 |
Ends: |
31 January 2005 |
Value (£): |
242,542
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| EPSRC Research Topic Classifications: |
| Optoelect. Devices & Circuits |
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| EPSRC Industrial Sector Classifications: |
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| Related Grants: |
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| Panel History: |
| Panel Date | Panel Name | Outcome |
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16 Jan 2001
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Joint Photonics Panel
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Deferred
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Summary on Grant Application Form |
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Organic light emitting diodes (LEDs) based on conjugated polymers have been proposed as the emissive elements in displays. Such devices often fail when run at high brightnesses (or equivalently large current densities) because of Joule heating within the structure. By reducing the area of the device, the buildup of heat within a device can be significantly reduced. We have previously shown that small area devices can be run at significantly higher current densities and brightnesses than 'conventional' large area devices. We now wish to systematically explore this effect, and determine the ultimate current density and electroluminescence-emission rate that can sustained by a conjugated polymer. We will use advanced lithographic techniques to miniaturise LEDs, with the aim of creating devices having active dimensions between 5 mm and 100 nm. In addition to increases in emission brightness, LEDs capable of sustaining large current densities will have enhanced electrical switching rates. We plan to investigate LED temporal emission in response to nanosecond high-voltage pulses. We propose that our devices may have application as low-cost light-sources for local-area optical network communication. They will also be of relevance to the operation of multi-pixel organic LED displays.
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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.shef.ac.uk |