Solution-processable iridium phosphors for efficient red and white organic light-emitting diodes with low roll-off. Issue 6 (14th January 2016)

• Record Type: Journal Article
• Authors: Deng, Ya-Li; Cui, Lin-Song; Liu, Yuan; Wang, Zhao-Kui; Jiang, Zuo-Quan; Liao, Liang-Sheng
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 6(2016)
• Page Start: 1250
• Page End: 1256
• Publication Date: 2016-01-14
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c5tc03793j
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : A new red phosphorescent material Ir(dmppm)2 (dmd) is synthesized and successfully used to fabricate solution-processed red and white organic light-emitting diodes. Abstract : A new red phosphorescent material Ir(dmppm)2 (dmd), which is a pyrimidine-based iridium(iii ) complex, has been synthesized and successfully used to fabricate solution-processed red and white organic light-emitting diodes (OLEDs). Due to its excellent solubility in common organic solvents and its good compatibility with the host material, a record current efficiency of 27.2 cd A −1 so far with satisfactory Commission International de l'Eclairage (CIE) coordinates of (0.60, 0.40) has been achieved for partially solution-processed red OLEDs by using Ir(dmppm)2 (dmd) as a dopant. Furthermore, the fabricated two-component "warm-white" OLEDs based on the Ir(dmppm)2 (dmd) red emitter demonstrate a maximum current efficiency of 28.9 cd A −1, which can meet the call for physiologically-friendly indoor illumination.