An aromatic imine group enhances the EL efficiency and carrier transport properties of highly efficient blue emitter for OLEDs

Youngil Park, Ji Hoon Lee, Dong Hyun Jung, Chung Chih Wu, Jongwook Park

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This study describes not only the synthesis and characterization of a novel indenofluorene derivative, TP-EIF, for use as an emitting material in blue organic light emitting diodes (OLEDs), but also the comparison with TP-EPY in which a carbon atom was replaced by an imine N, and the effects of the structural changes on the OLED properties were examined. The FWHMs of the EL spectral bands were 54 nm for TP-EPY and 73 nm for TP-EIF, which demonstrated enhanced emission spectral purity. The external quantum efficiency of TP-EPY was 5.1%, which was more than twice the value for TP-EIF (2.19%).

Original languageEnglish
Title of host publication10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010
Pages574-575
Number of pages2
Publication statusPublished - 2010
Event10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010 - Seoul, Korea, Republic of
Duration: 11 Oct 201015 Oct 2010

Publication series

NameProceedings of International Meeting on Information Display
ISSN (Print)1738-7558

Conference

Conference10th International Meeting on Information Display and International Display Manufacturing Conference and Asia Display 2010, IMID/IDMC/ASIA Display 2010
Country/TerritoryKorea, Republic of
CitySeoul
Period11/10/1015/10/10

Keywords

  • Blue material
  • Imine group effect
  • Indenflourene
  • Indenopyrazine
  • OLED

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