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Excitonic processes at organic heterojunctions

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Abstract

Understanding excitonic processes at organic heterojunctions is crucial for development of organic semiconductor devices. This article reviews recent research on excitonic physics that involve intermolecular charge transfer (CT) excitons, and progress on understanding relationships between various interface energy levels and key parameters governing various competing interface excitonic processes. These interface excitonic processes include radiative exciplex emission, nonradiative recombination, Auger electron emission, and CT exciton dissociation. This article also reviews various device applications involving interface CT excitons, such as organic light-emitting diodes (OLEDs), organic photovoltaic cells, organic rectifying diodes, and ultralow-voltage Auger OLEDs.

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Authors and Affiliations

  1. Department of Physics, Yunnan University, Kunming, 650091, China

    ShouJie He & ZhengHong Lu

  2. Department of Materials Science and Engineering, University of Toronto, Toronto, M5S 3E4, Canada

    ZhengHong Lu

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  1. ShouJie He
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Correspondence to ShouJie He or ZhengHong Lu.

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He, S., Lu, Z. Excitonic processes at organic heterojunctions. Sci. China Phys. Mech. Astron. 61, 027301 (2018). https://doi.org/10.1007/s11433-017-9110-x

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  • DOI: https://doi.org/10.1007/s11433-017-9110-x

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