| EPSRC Reference: |
GR/R41200/01 |
| Title: |
Emitting and Manipulating Light with Polymers and Liqued Crystals: An Integreated Approach |
| Principal Investigator: |
Grell, Dr M |
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| Department: |
Physics and Astronomy |
| Organisation: |
University of Sheffield |
| Scheme: |
Fast Stream |
| Starts: |
22 May 2001 |
Ends: |
21 October 2003 |
Value (£): |
58,082
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| EPSRC Research Topic Classifications: |
| Optical Devices & Subsystems |
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Summary on Grant Application Form |
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The bulk of the proposed research will explore novel ways to combine the emerging organic electroluminescence (EL) technology with the established liquid crystal display (LCD) technology, thus adding value to both. An emphasis will be on the development of polarized organic EL light sources which are particularly useful as LCD backlights, as LCDs require polarized illumination. The approach to linearly polarized light sources will explore novel device concepts, drawing on available advanced materials. The approach to circularly polarized light sources will exploit the remarkable properties of chiral nematic liquid crystals (CNLCs). These may act as reflective circular polarizers, or as one-dimensional photonic crystals. Both 'photon recycling' organic EL cells and dye-doped CNLCs will be studied, particularly in combination with very narrow emission band dyes such as organolanthanides. Also, CNLCs will be used as Bragg reflectors for organic microcavity resonators with circularly polarized emission. As an alternative to the generation of polarized light, novel, dye-doped LCD concepts based on fluorescence switching in a polarizing excitonic energy transfer (EET) medium will be studied. Such LCDs can operate under illumination with unpolarized light, which may be generated by a conventional organic EL device. Finally, first steps towards a novel fabrication method for 2-dimensional photonic crystals will be explored, that can in principle be extended to create a photonic stopband within an operational organic light emitting device.
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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 |