Mixed Ligand Copper(I) Complexes as Emitters Enable Higher OLED Device Performance for Energy-Harvesting Applications AITranslate

Basic Information:

DOI：https://doi.org/10.1021/acsaelm.3c00604

Chinese Library Classification Number:

Citation Information:

OLEDs are generally used in display devices and lighting that significantly aid energy conservation. The focus of the current study was on the synthesis of four-coordinate mixed ligand copper(I) complexes containing 1,10-phenanthroline derivatives, which were produced from 1,10-phenanthroline-5,6-dione, 4-nitrobenzaldehyde, thiophene-2-amine/furan-2-amine/pyrrole-2-amine, and acetylacetone derivative (acacp). The [CuL1–3(acacp)]-produced complexes were evaluated using FT-IR, UV–vis, Raman, mass, molar conductance, and elemental analyses. The 1,10-phenanthroline derivative chelates with a copper(I) ion through a bidentate manner with distorted square-planar geometry. Complexes with nonelectrolyte composition are visible in the molar conductance measurements. The metal complexes mentioned above can be prepared for the production of OLED devices using the solution approach since they are soluble in organic solvents. Effective green-, yellow-, and red-emitting OLEDs are made using solution processing and emissive chemicals as the dopants. Additionally, the manufacture of OLED devices based on the copper(I) complex of L1 demonstrated the best performance with a maximum brightness of 22,800 cd m2, a maximum current efficiency of 30.50 cd A1, and a maximum external quantum efficiency of 20.5%. The observed results suggested that the Cu(I) complex with a 1,10-phenanthroline backbone coated on the OLED device achieved good performances due to the copper complex as an emitter, inclusive of imidazole and diamine moieties and other heterocyclic cores, which increases the aromatic π-system compared with other ligand systems.