Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 4, Issue 6, Pages 1250-1256Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc03793j
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Funding
- Natural Science Foundation of China [61307036, 61177016]
- Natural Science Foundation of Jiangsu Province [BK20130288]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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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.
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