Crosslinking Super Yellow to produce super OLEDs: Crosslinking with azides enables improved performance

نویسندگان

چکیده

An increasing number of organic light-emitting diodes (OLEDs) is nowadays based on the use polymers as emissive material. For this material class in particular, solution-processing OLEDs has gained traction both research and industry. However, order to access multilayer systems, orthogonal solvents must be used prevent dissolution previously prepared layers. The crosslinkers can facilitate production method by reducing needed since insoluble networks are generated. In work, a novel bisazide crosslinker employed insolubilize Super Yellow, polyphenylene-vinylene emitter. This allows an additional poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine electron blocking layer (EBL) from same solvent. Devices including show improved efficacies compared reference devices without EBL, while also maintaining emission spectrum. Using upscalable technique doctor blading, were fabricated which showed particularly noticeable effect with nearly twofold increase luminance 56% current efficacy.

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ژورنال

عنوان ژورنال: Journal of polymer science

سال: 2022

ISSN: ['1542-9385', '0098-1273']

DOI: https://doi.org/10.1002/pol.20220120