摘要
Graphene-based flexible transparent electrodes(FTEs)are promising candidate materials for developing next-generation flexible organic light-emitting diodes(OLEDs).However,the quest for high-efficiency OLEDs is hindered by the low light-extraction and charge injection efficiencies of graphene electrode.Here,we combine the frustrated Lewis pair doping with nanostructure engineering to obtain high-performance graphene FTE.A p-type dopant aci-nitromethane-tris(pentafluorophenyl)borane(ANBCF)was synthesized and deposited on graphene FTE to form an aperiodic nanostructure,which not only improves the light-extraction but also stably p-dopes graphene to enhance its hole injection.The use of ANBCF-doped graphene as the anode enables high-efficiency flexible green OLEDs with external quantum efficiency(EQE)and power efficiency(PE)out-performing most flexible graphene OLEDs of comparable structure.This study provides a simple and effective pathway to fabricate high-performance graphene FTEs for efficient flexible OLEDs.
基金
supported by the National Science Foundation of China(Nos.52272051,52172057,52188101 and 52002375)
Ministry of Science and Technology of China(No.2021YFA1200804)
Chinese Academy of Sciences(Nos.ZDBSLYJSC027 and XDB30000000)
Postdoctoral Science Foundation of China(Nos.2020M670812 and 2020TQ0328)
Liaoning Revitalization Talents Program(No.XLYC1808013)
Guangdong Basic and Applied Basic Research Foundation(No.2020B0301030002).