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Synthesis of red-emitting cationic Ir (III) complex and its application in white light-emitting electrochemical cells
- Source :
- Organic Electronics. 42:303-308
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- Construction of intramolecular π-π packing between cyclometalated and ancillary ligand have been proved to be a feasible way to design cationic Ir(III) phosphors for stable light-emitting electrochemical cells (LECs). Employing blue-green (C1) and yellow-emitting (C2) Ir(III) complexes as emitters, in which such π-π interactions between ligands occur, the stable and efficient LECs with peak current efficiency of 21.9 cd/A and 20.3 cd/A, respectively, were realized. To achieve the white electroluminescence, herein, a new red-emitting cationic Ir (III) complex (C3) using 2-(5-phenyl-2-phenyl-2H-1,2,4-triazol-3-yl)pyridine as ancillary ligand was designed and synthesized. A warm white light emitting, by doping C3 into the blue-green emitting C1, exhibits the current efficiency of 10.1 cd/A. In addition, the obtained LECs are more stable than those of previous reports due to presence of intrinsic super-cage structures in the systems. The results indicate that the efficient white LECs hold promising applications in the practical solid state lighting.
- Subjects :
- Phosphor
02 engineering and technology
Electroluminescence
010402 general chemistry
Photochemistry
01 natural sciences
Electrochemical cell
law.invention
Biomaterials
chemistry.chemical_compound
law
Pyridine
Materials Chemistry
Organic chemistry
Electrical and Electronic Engineering
Ligand
Doping
Cationic polymerization
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Solid-state lighting
chemistry
0210 nano-technology
Subjects
Details
- ISSN :
- 15661199
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Organic Electronics
- Accession number :
- edsair.doi...........99187683d6767aa2e81ac232ee59a0c7