Highly Efficient Blue LECs Using Charged Iridium Complexes

• Authors: K. Wongkhan , U. Mahanitipong , M. Srikaew , Y. Tantirunggrotchai , S. Sahasithiwat , R. Jitchati
• Languages of publication: EN

Abstracts

EN

Two heteroleptic charged iridium (III) species comprising two cyclometallating ligands and a neutral diimine ligand were synthesized and characterized, namely [(3,4,7,8-tetramethyl-1,10-phenanthroline-N-N')-bis-(2-(2,4-difluorophenyl)-5-(trifluoromethyl)pyridine-C^{6'},N)-iridium (III)]hexafluorophosphate (UM01) and [(3,4,7,8-tetramethyl-1,10-phenanthroline-N-N')-bis-(2-(2',4'-difluoro-phenyl)-1H-pyrazole-C^{6'},N)-iridium (III)]hexafluorophosphate (UM02). Both complexes were used as the blue emitter in OLED and LEC devices. We found that the optimized structure is ITO/PEDOT:PSS/complex:BMIMPF₆(1:1)/Al. The UM01 gave a current efficiency of 1.14 cd A^{-1}, whereas the UM02 shows a better CIE coordination at 0.19, 0.40.

Keywords

EN

85.60.Bt   85.60.Jb  

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 1109-1111

Dates

published

2015-04

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Identifiers

DOI

10.12693/APhysPolA.127.1109