Significant Lifetime Enhancement in QLEDs by Reducing Interfacial Charge Accumulation via Fluorine Incorporation in the ZnO Electron Transport Layer

[摘要] tsQuantum dots light emitting devices (QLEDs) with extremely long half-lifetimes at 100 cd m−2, 2,370,000 h were successfully fabricated using CF4 plasma-treated ZnO nanoparticle electron transport layers.A new experimental approach that probes changes in exciton lifetime under current flow was used to investigate the changes in carrier concentration in QLEDs.Evidence of the dependence of QLED stability on electron and hole concentrations at the QD/HTL interface was revealed.

[发布日期] 2022-10-08

[关键词] Colloidal quantum dots;Quantum dots light emitting device;Device stability;Zinc oxide nanoparticles;Fluorine