Carrier transport dependence on phosphorescent materials in polymer based OLEDs

Genichi Motomura, Mitsunori Suzuki, Takahisa Shimizu, Hideo Fujikake

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

Abstract

The carrier transport properties in the emissive layer of phosphorescent polymer organic light-emitting diodes (OLEDs) were observed by time-of-flight (TOF) mobility measurements. The hole and electron mobilities in carrier transport polymer without iridium complexes were measured with high levels, 3 × 10-4 cm2/Vs (hole) and 1 × 10-3 cm2/Vs (electron), of non-dispersive transport. The hole and/or electron transport properties were degraded when the iridium complexes were included in the phosphorescent polymers. The complexes acted as a trap in the phosphorescent polymers when the energy levels of the iridium complexes were lower than that of the carrier transport polymer.

Original languageEnglish
Title of host publicationCharge Generation/Transport in Organic Semiconductor Materials
Pages60-65
Number of pages6
DOIs
Publication statusPublished - 2011 Dec 1
Externally publishedYes
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: 2011 Nov 282012 Dec 2

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1402
ISSN (Print)0272-9172

Other

Other2011 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/11/2812/12/2

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Motomura, G., Suzuki, M., Shimizu, T., & Fujikake, H. (2011). Carrier transport dependence on phosphorescent materials in polymer based OLEDs. In Charge Generation/Transport in Organic Semiconductor Materials (pp. 60-65). (Materials Research Society Symposium Proceedings; Vol. 1402). https://doi.org/10.1557/opl.2012.266