Design and synthesis of stable cuprous complexes bearing P∧N-type ligands for vapor-deposited organic light-emitting device
| Autor: | Chunmei Liu, Yin Guojie, Bin Zhang, Juan Huang, Jiao Bingjing, Mengmeng Cao, Yanyan Zhu, Chenxia Du, Jinyuan Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Denticity Materials science Iodide Quantum yield 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials Amorphous solid Biomaterials chemistry.chemical_compound chemistry Materials Chemistry OLED Physical chemistry Quantum efficiency Electrical and Electronic Engineering Triphenylphosphine 0210 nano-technology Luminescence |
| Zdroj: | Organic Electronics. 64:158-165 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2018.10.011 |
| Popis: | Three neutral Cu(I) complexes (Cu01, Cu02 and Cu03) with general formula NˆPCuI(PPh3), where NˆP = 2-(2′-diphenylphosphinophenyl)-1-phenylbenzimidazole derivatives, are synthesized and characterized. The crystal structures of the complexes suggest that the central Cu(I) ion is tetra-coordinated by bidentate PˆN ligand, iodide and ancillary triphenylphosphine ligand, forming a distorted tetrahedron configuration. At 293 K, all complexes in powder exhibit intense emissions (Cu01 581 nm, Cu02 557 nm, Cu03 575 nm) with quantum yield up to 38% (Cu01), implying their potential application as emitters in organic light-emitting diode (OLED). In addition, the thermal stability of Cu01 is confirmed by the luminescence spectrum from evaporated amorphous films. Vapor-deposited OLED based on Cu01 is fabricated, showing a peak external quantum efficiency of 3.4%, a peak current efficiency of 10.0 cd/A, and a maximum brightness of 1806 cd m−2. |
| Databáze: | OpenAIRE |
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