Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials

Evgueni Polikarpov; Phillip K. Koech; Liang Wang; James S. Swensen; Lelia Cosimbescu; James E. Rainbolt; Amber L. Von Ruden; Daniel J. Gaspar; Asanga B. Padmaperuma

doi:10.1117/1.3528499

1 January 2011 Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials

Evgueni Polikarpov, Phillip K. Koech, Liang Wang, James S. Swensen, Lelia Cosimbescu, James E. Rainbolt, Amber L. Von Ruden, Daniel J. Gaspar, Asanga B. Padmaperuma

Author Affiliations +

Journal of Photonics for Energy, Vol. 1, Issue 1, 011007 (January 2011). https://doi.org/10.1117/1.3528499

Abstract

We report the photophysical characterization, computational results, and device properties for ambipolar phosphine oxide-based host materials that were chemically functionalized to control the charge transport. We study the effects of structural modifications of phosphine oxide hosts on the charge balance in the emissive zone of organic light-emitting devices (OLEDs). Significant changes in charge transport within the emissive layer are observed upon introduction of functional groups, such as pyridine and carbazole, into the organic phosphine oxide host structure. We demonstrate that rational design of host materials allows for the control of charge balance in the emissive zone of OLEDs.

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Evgueni Polikarpov, Phillip K. Koech, Liang Wang, James S. Swensen, Lelia Cosimbescu, James E. Rainbolt, Amber L. Von Ruden, Daniel J. Gaspar, and Asanga B. Padmaperuma "Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials," Journal of Photonics for Energy 1(1), 011007 (1 January 2011). https://doi.org/10.1117/1.3528499

Published: 1 January 2011

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