Efficient blue phosphorescent OLEDs employing novel oligocarbazoles as high-triplet-energy host materials

Ming Han Tsai*, Yun Hua Hong, Chih Hao Chang, Hai-Ching Su, Chung Chih Wu, Ausra Matoliukstyte, Jurate Simokaitiene, Saulius Grigalevicius, Juozas V. Grazulevicius, Chao Ping Hsu

*Corresponding author for this work

Research output: Contribution to journalConference article

Abstract

A series of 3(6),9'-linked oligocarbazoles with large triplet energies and morphological stability are reported as host materials for electrophosphorescence. In such oligocarbazoles, the triplet excitation is confined within one carbazole unit, leading to a new molecular design strategy for large-triplet-energy and high morphological stability hosts. Using these hosts, efficient blue phosphorescent OLEDs having efficiencies up to 15%, 31 cd/A and 28 Im/W are demonstrated.

Original languageEnglish
Pages (from-to)772-775
Number of pages4
JournalDigest of Technical Papers - SID International Symposium
Volume38
Issue number1
DOIs
StatePublished - 1 Jan 2007
Event2007 SID International Symposium - Long Beach, CA, United States
Duration: 23 May 200725 May 2007

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    Tsai, M. H., Hong, Y. H., Chang, C. H., Su, H-C., Wu, C. C., Matoliukstyte, A., Simokaitiene, J., Grigalevicius, S., Grazulevicius, J. V., & Hsu, C. P. (2007). Efficient blue phosphorescent OLEDs employing novel oligocarbazoles as high-triplet-energy host materials. Digest of Technical Papers - SID International Symposium, 38(1), 772-775. https://doi.org/10.1889/1.2785420