The effects of solvent vapor annealing on the performance of blue polymer light-emitting diodes

Add time:08/10/2019    Source:sciencedirect.com

In this manuscript, we reported the effects of solvent vapor annealing on performances of blue polymer light-emitting diodes, where the blue light-emitting poly(dibenzothiophene-S,S-dioxide-co-dioctyl-2,7-fluorene) that comprising dibenzothiophene-S,S-dioxide with molar ratio of 10% was used as the emissive layer, and toluene or chloroform was use as the annealing solvents. It was noted that the performances of PLED in terms of both luminous efficiency and brightness were obviously enhanced by solvent vapor annealing treatment, which can be correlated to the improved film morphology. The formation of β-phase lead to more balanced electron and hole flux as evaluated by single carrier devices. The best device performance with luminous efficiency of 4.8 cd/A was realized, which increased about 70% relative to that of 2.77 cd/A for the pristine device. These observations demonstrated that the solvent vapor annealing approach can be an effective strategy to improve performances of polymer light-emitting diodes.

We also recommend Trading Suppliers and Manufacturers of Solvent Blue 70 (cas 12237-24-0). Pls Click Website Link as below: cas 12237-24-0 suppliers

Prev:An environment-friendly supramolecular solvent-based liquid–phase microextraction method for determination of aluminum in water and acid digested food samples prior to spectrophotometry
Next:Strong blue emission from ZnO nanocrystals synthesized in acetone-based solvent)