Optoelectronic properties study of arylamine-functionalized benzothiophenes and benzothiophene S,S-Dioxides. Application in solution-processed organic light-emitting diodes
Résumé
Conjugated organic molecules based on core benzothiophene and benzothiophene S,S-dioxide substituted with triphenylamines at positions 3,5,6 and 2,4,7 were designed and synthesized in a facily manner. All compounds exhibited bright emission within the visible region and were solution processable from halogen-free solvents. Organic light-emitting diode (OLED) devices were fabricated through an air process spin-coating method where all layers except the top cathode were solution processed. Device luminance exceed 1000 cd/m 2 using one compound based on the 2,4,7triphenylaminebenzothiophene S,S-dioxide scaffold which in turn was successfully translated to a large area module slotdie coated on a plastic substrate.