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Issue 6, 2016
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Solution-processable iridium phosphors for efficient red and white organic light-emitting diodes with low roll-off

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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.

Graphical abstract: Solution-processable iridium phosphors for efficient red and white organic light-emitting diodes with low roll-off

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Publication details

The article was received on 13 nóv. 2015, accepted on 05 jan. 2016 and first published on 06 jan. 2016


Article type: Paper
DOI: 10.1039/C5TC03793J
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J. Mater. Chem. C, 2016,4, 1250-1256

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    Solution-processable iridium phosphors for efficient red and white organic light-emitting diodes with low roll-off

    Y. Deng, L. Cui, Y. Liu, Z. Wang, Z. Jiang and L. Liao, J. Mater. Chem. C, 2016, 4, 1250
    DOI: 10.1039/C5TC03793J

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