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Journal of Photonics for Energy

Controlling charge transport in blue organic light-emitting devices by chemical functionalization of host materials
Author(s): 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
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Paper 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.

Paper Details

Date Published: 1 January 2011
PDF: 11 pages
J. Photon. Energy. 1(1) 011007 doi: 10.1117/1.3528499
Published in: Journal of Photonics for Energy Volume 1, Issue 1
Show Author Affiliations
Evgueni Polikarpov, Pacific Northwest National Lab. (United States)
Phillip K. Koech, Pacific Northwest National Lab. (United States)
Liang Wang, Pacific Northwest National Lab. (United States)
James S. Swensen, Pacific Northwest National Lab. (United States)
Lelia Cosimbescu, Pacific Northwest National Lab. (United States)
James E. Rainbolt, Pacific Northwest National Lab. (United States)
Amber L. Von Ruden, Pacific Northwest National Lab. (United States)
Daniel J. Gaspar, Pacific Northwest National Lab. (United States)
Asanga B. Padmaperuma, Pacific Northwest National Lab. (United States)


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