Effect of energy level of hole-blocking layer on the electroluminescence characteristics of highly soluble ir(Iii) complex based phosphorescent organic light-emitting diodes

Young Wook Park, Young Min Kim, Jin Hwan Choi, Tae Hyun Park, Jin Wook Jung, Byeong Kwon Ju, Min Ju Cho, Dong Hoon Choi

Research output: Contribution to journalConference article


In this report, we’ve demonstrated the highly efficient electroluminescence (EL) of highly soluble Iridium(III) tris(9-(6-Phenyl-pyridin-3-ylmethyl)-9H-Carbazole) based polymer light-emitting diodes utilizing balanced carrier distribution and exciton confinement by controlling energy level of hole blocking layer. By applying wide band gap hole-blocking material of 3-(4-biphenylyl)-4-phenyl-5-tert-butylphenyl-1,2,4-triazole, the EL efficiency was remarkably improved than with the 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline.

Original languageEnglish
Pages (from-to)1740-1743
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Issue number1
Publication statusPublished - 2009 Jan 1
Event2009 Vehicles and Photons Symposium - Dearborn, MI, United States
Duration: 2009 Oct 152009 Oct 16


ASJC Scopus subject areas

  • Engineering(all)

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