Unraveling the Luminescence Quenching Mechanism in Strong and Weak Quantum-Confined CsPbBr₃ Triggered by Triarylamine-Based Hole Transport Layers.

ABSTRACT: Luminescence quenching by hole transport layers (HTLs) is one of the major issues in developing efficient perovskite light-emitting diodes (PeLEDs), which is particularly prominent in blue-emitting devices. While a variety of material systems have been used as interfacial layers, the origin of such quenching and the type of interactions between perovskites and HTLs are still ambiguous. Here, we present a systematic investigation of the luminescence quenching of CsPbBr₃ by a commonly employed hole transport polymer, poly[(9,9-dioctylfluorenyl-2,7diyl)-co-(4,4'-(N-(4-sec-butylphenyl) diphenylamine)] (TFB), in LEDs. Strong and weak quantum-confined CsPbBr₃ (nanoplatelets (NPLs)/nanocrystals (NCs)) are rationally selected to study the quenching mechanism by considering th

SUBMITTER: Kshirsagar AS 

PROVIDER: S-EPMC10976578 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature