High power efficiency in blue phosphorescent organic light-emitting diodes using 2,4-substituted dibenzofuran with a carbazole and a diphenylphosphine oxide

• Published in: Organic electronics Vol. 13; no. 11; pp. 2589 - 2593
• Main Authors: Jeong, Sook Hee, Lee, Jun Yeob
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.11.2012; Elsevier
• Subjects: 2,4-Substitution; Applied sciences; Bipolar transport; Blue phosphorescent organic light-emitting diodes; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dibenzofuran; Electronics; Exact sciences and technology; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optoelectronic devices; Photoluminescence; Physics; Power efficiency; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Blue phosphorescent organic light-emitting diodes; 2,4-Substitution; Power efficiency; Bipolar transport; Dibenzofuran; Performance evaluation; Driving voltage; Carbazole; Triplet state; High power; High efficiency; Optoelectronic device; Organic light emitting diodes; Phosphorescence; Blue light; Organic electronics
• ISSN: 1566-1199; 1878-5530
• DOI: 10.1016/j.orgel.2012.08.005

[Display omitted] ► Low driving voltage in blue phosphorescent organic light emitting diodes. ► High triplet energy bipolar host material. ► Dibenzofuran substitution at 2,4-position. A dibenzofuran derivative with a carbazole and a diphenylphosphine oxide at 2,4-positions of dibenzofuran was synthesized as the high triplet energy bipolar host material for high power efficiency in blue phosphorescent organic light-emitting diodes. The device performances of 2,4-substituted dibenzofuran compound were compared with those of 2,8-substituted dibenzofuran. The 2,4 substitution was better than common 2,8-substitution in terms of driving voltage and power efficiency.