Abstract
We have investigated the light emission properties in rubrene-doped nematic liquid crystal (LC) cells from the following three standpoints: (i) effect of the heating temperature during the sample preparation, (ii) role of the emissive LC layer thickness, and (iii) role of different LC types used as the emissive layer. As a result, the light-emitting LC cells simultaneously exhibit the features of electrochemiluminescent cells (the carrier transport is governed by an ionic conduction) as well as of organic light-emitting diodes (the luminance strongly depends on the emissive layer thickness). Furthermore, we report that devices with cyano group containing LCs exhibit higher luminance compared to a fluorinated LC.
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Acknowledgements
This work was partially supported by the Japan Society for the Promotion of Science (JSPS) Grant-in-Aid for Young Scientists (B) 22760009.
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Honma, M., Horiuchi, T., Tanimoto, M. et al. Fundamental emission characteristics of light-emitting liquid crystal cells with rubrene-doped 4-cyano-4’-pentylbiphenyl. Appl. Phys. A 115, 873–878 (2014). https://doi.org/10.1007/s00339-013-7882-1
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DOI: https://doi.org/10.1007/s00339-013-7882-1