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

Paul Winget, Minki Hong, Jean Luc Brédas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationOrganic Light Emitting Materials and Devices XVIII
EditorsFranky So
PublisherSPIE
ISBN (Electronic)9781628412109
DOIs
StatePublished - 2014
Externally publishedYes
EventOrganic Light Emitting Materials and Devices XVIII - San Diego, United States
Duration: Aug 17 2014Aug 20 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9183
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOrganic Light Emitting Materials and Devices XVIII
Country/TerritoryUnited States
CitySan Diego
Period8/17/148/20/14

Keywords

  • Degradation mechanism
  • Guest
  • Host
  • OLED

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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