Solution processed deep blue phosphorescent organic light-emitting diodes with over 20% external quantum efficiency

• Published in: Organic electronics Vol. 12; no. 10; pp. 1711 - 1715
• Main Authors: Yook, Kyoung Soo, Lee, Jun Yeob
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2011; Elsevier
• Subjects: Applied sciences; Deep blue device; Electronics; Exact sciences and technology; High efficiency; High triplet energy host material; Optoelectronic devices; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Solution process; Deep blue device; High efficiency; Solution process; High triplet energy host material; Quantum yield; Morphology; Spin-on coatings; Optoelectronic device; Organic light emitting diodes; Chromaticity; Phosphorescence; Blue light; Growth from solution; Organic electronics
• ISSN: 1566-1199; 1878-5530
• DOI: 10.1016/j.orgel.2011.07.004

[Display omitted] ► High efficiency solution processed deep blue organic light emitting diodes. ► Above 20% external quantum efficiency in solution deep blue device. ► Deep blue color coordinate of (0.14, 0.19) in solution device. Highly efficient solution processed deep blue phosphorescent organic light-emitting diodes (PHOLEDs) were developed using a solution processible high triplet energy host and deep blue dopant materials. Stable film morphology was observed from the spin coated deep blue emitting layer and a high quantum efficiency of 22.1% was achieved in the deep blue PHOLED with a color coordinate of (0.14, 0.19).