Aldred, M.P. and Vlachos, P. and Contoret, A.E.A. and Farrar, S.R. and Chung-Tsoi, W. and Mansoor, B. and Woon, K.L. and Hudson, R. and Kelly, S.M. and O'Neill, M. (2005) Linearly polarised organic light-emitting diodes (OLEDs): synthesis and characterisation of a novel hole-transporting photoalignment copolymer. Journal of Materials Chemistry, 15. pp. 3208-3213. ISSN 0959-9428, DOI https://doi.org/10.1039/B506063J.
Full text not available from this repository.Abstract
We describe the synthesis and characterisation of a novel hole transporting photoalignment copolymer for linearly polarised emission. The copolymer has a coumarin side-chain which undergoes (2 + 2) cycloaddition on irradiation with ultraviolet light. A fluorene side-chain, whose ionisation potential is well matched to the work-function of indium tin oxide, provides hole transporting properties. Polarised green electroluminescence was obtained by spin coating a novel polymerisable and light-emitting liquid crystal onto the photoaligned copolymer. A polarisation ratio value of 13 : 1 and a polarised irradiance of 200 cd m−2 was obtained at 9 V. Polarised red emission is also described in a guest–host configuration. The spatial patterning of the polarisation direction is also shown.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Linearly polarised; Organic light-emitting diodes; Novel hole-transporting photoalignment copolymer |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 27 Feb 2015 01:53 |
| Last Modified: | 27 Feb 2015 01:53 |
| URI: | http://eprints.um.edu.my/id/eprint/12891 |
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