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Exciplex kinetics in nanocrystal organic light-emitting diodes

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Abstract

We studied the exciplex kinetics in nanocrystal organic light-emitting diodes (NC-OLEDs) where the emissive layer of inorganic nanocrystal quantum dots is sandwiched between the electron and hole transport layers of organic semiconductors at the organic–organic interface. We modeled exciplex generation, diffusion, recombination, and capture by nanocrystals via the Förster mechanism in NC-OLEDs. The exciplex kinetics determines the NC-OLED operation characterized by the quantum yield efficiency and emission intensity and it can be optimized by controlling the nanocrystal separation in the NC-OLED.

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Acknowledgements

The research is funded by Hewlett-Packard Laboratories (Palo Alto, California). KK acknowledges valuable discussions with V.M. Burlakov, D.G. Pettifor, J. Brug, CC Yang, and G. Gibson. The calculations were performed at the Materials Modelling Laboratory (University of Oxford).

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  1. Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK

    Krisztian Kohary

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  1. Krisztian Kohary
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Correspondence to Krisztian Kohary.

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Kohary, K. Exciplex kinetics in nanocrystal organic light-emitting diodes. J Mater Sci: Mater Electron 20 (Suppl 1), 10–14 (2009). https://doi.org/10.1007/s10854-007-9420-4

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  • DOI: https://doi.org/10.1007/s10854-007-9420-4

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