Theoretical investigation of the degradation mechanisms in host and guest molecules used in OLED active layers

Paul Winget; Minki Hong; Jean-Luc Brédas

doi:10.1117/12.2062266

8 October 2014 Theoretical investigation of the degradation mechanisms in host and guest molecules used in OLED active layers

Paul Winget, Minki Hong, Jean-Luc Brédas

Author Affiliations +

Proceedings Volume 9183, Organic Light Emitting Materials and Devices XVIII; 91830J (2014) https://doi.org/10.1117/12.2062266
Event: SPIE Organic Photonics + Electronics, 2014, San Diego, California, United States

Abstract

A feature of OLEDs that has to date received little attention is the prediction of the stability of the molecules involved in the electrical and optical processes. Here, we present computational results intended to aid in the development of stable systems. We identify degradation pathways and define new strategies to guide the synthesis of stable materials for OLED applications for both phosphorescent emitters and organic host materials. The chemical reactivity of these molecules in the active layers of the devices is further complicated by the fact that, during operation, they can be either oxidized or reduced (as they localize a hole or an electron) in addition to forming both singlet and triplet excitons.

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Paul Winget, Minki Hong, and Jean-Luc Brédas "Theoretical investigation of the degradation mechanisms in host and guest molecules used in OLED active layers", Proc. SPIE 9183, Organic Light Emitting Materials and Devices XVIII, 91830J (8 October 2014); https://doi.org/10.1117/12.2062266

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