Organic light-emitting devices with an n-type bis(ethylenedithio)- tetrathiafulvalene-doped 4,7-diphenyl-1,10-phenanthroline electron transport layer operating at low voltage

K. S. Lee, D. H. Kim, D. U. Lee, T. W. Kim

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The electrical and optical properties of organic light-emitting devices (OLEDs) with bis(ethylenedithio)-tetrathiafulvalene (BEDT-TTF)-doped 4,7-diphenyl-1,10-phenanthroline (BPhen) electron transport layers (ETLs) were investigated. The current density-voltage characteristics of the OLEDs with BEDT-TTF-doped BPhen ETLs and electron only devices with BEDT-TTF-doped BPhen layers showed that the electrons injected from the cathode were increased by inserting a BEDT-TTF-doped BPhen layer. OLEDs containing BEDT-TTF-doped BPhen layers at a doping concentration of 1 wt.% demonstrated the highest current density and luminance values. Enhancements of the electron injection and luminance as well as a decrease in the operating voltage of the OLEDs were achieved by inserting a BEDT-TTF-doped BPhen layer.

Original languageEnglish
Pages (from-to)193-196
Number of pages4
JournalThin Solid Films
Volume521
DOIs
StatePublished - 2012 Oct 30

Keywords

  • BEDT-TTF doped BPhen ETL
  • Enhancement mechanism
  • OLED

Fingerprint Dive into the research topics of 'Organic light-emitting devices with an n-type bis(ethylenedithio)- tetrathiafulvalene-doped 4,7-diphenyl-1,10-phenanthroline electron transport layer operating at low voltage'. Together they form a unique fingerprint.

  • Cite this