Open AccessTheoretical investigation of the degradation mechanisms in host and guest molecules used in OLED active layers
Author(s) -
Paul Winget,
Minki Hong,
JeanLuc Brédas
Publication year - 2014
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.2062266
Subject(s) - oled , degradation (telecommunications) , molecule , phosphorescence , materials science , exciton , singlet state , singlet oxygen , optoelectronics , host (biology) , organic molecules , nanotechnology , chemical physics , computer science , chemistry , fluorescence , layer (electronics) , physics , telecommunications , organic chemistry , excited state , ecology , quantum mechanics , oxygen , nuclear physics , biology
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. © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only
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