A model for exciton formation in organic electroluminescent devices

H. L. Kwok

doi:10.1117/12.2283917

29 August 2017 A model for exciton formation in organic electroluminescent devices

H. L. Kwok

Proceedings Volume 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging; 103133D (2017) https://doi.org/10.1117/12.2283917
Event: Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 2002, Ottawa, Ontario, Canada

Abstract

This work reports a physical model that relates charge transport to the exciton formation rate in organic electroluminescent device. The model assumes ideal charge density profiles and the existence of an "optimal" charge separation for excitons to be formed. This allows the exciton formation rate to be dependent on the charge density profiles as well as parameters linked to the exciton formation process. Field dependent effect enters into this model through a "localization" parameter, which is related to the carrier mobility. When the model is applied to the ITO/CuPc/NPB/A1q3/Mg system, we have found it possible to address a number of observations not fully explained previously.

Citation Download Citation

H. L. Kwok "A model for exciton formation in organic electroluminescent devices", Proc. SPIE 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 103133D (29 August 2017); https://doi.org/10.1117/12.2283917

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