Organic- fullerene composite anode structures for organic light-emitting diodes

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journalNot applicable

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Author(s)

  • Y. Y. Yuan
  • S. Han
  • D. Grozea
  • J. Zhang
  • Z. H. Lu

Detail(s)

Original languageEnglish
Article number63331S
Journal / PublicationProceedings of SPIE - The International Society for Optical Engineering
Volume6333
Publication statusPublished - 2006
Externally publishedYes

Conference

TitleOrganic Ligh Emitting Materials and Devices X
PlaceUnited States
CitySan Diego, CA
Period13 - 16 August 2006

Abstract

CuPc:Q60 Organic-Fullerene composites together with metals such as Au are found to form efficient hole injection structures for organic light-emitting diodes, C60 concentration of 30 wt.% yielded optimum device characteristics including low driving voltage, high current efficiency, and high thermal stability. In the case of Au/CuPc:C60 anode structure, extremely high current efficiency of ∼ 8.7 cd/A and low operating voltage (i.e. 20 mA/cm2 at ∼8V) has been achieved in a simple bi-layer device using Alq as emitter. Through a study on single carrier devices, the versatility of the composite injection structure is attributed to that C60 in the composite layer facilitate hole transfer from the metals to the composite whereas CuPc facilitate hole transport and transfer to a hole transport layer.

Research Area(s)

  • Composites, Fullerene, Hole injection, Interfaces, Metal anode, OLEDs

Citation Format(s)