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• W3027611421 abstract "The dynamics and control of charge transfer between optoelectronically interesting and size-tunable halide perovskite quantum dots and other juxtaposed functional electronic materials are important issues for the emergent device interest involving such a family of materials in heterostructure configurations. Herein, we have grown bimetallic Au–Ag thin films on glass by pulsed laser deposition at room temperature, which bear nanoparticulate character, and the corresponding optical absorption spectra reveal the expected surface plasmon resonance signature(s). Subsequently, spin-coated CsPbBr3 nanoparticle films onto the bimetallic Au–Ag films exhibit surface-enhanced Raman scattering as well as strong photoluminescence quenching, the latter reflecting highly efficient transfer of photo-generated carriers across the CsPbBr3/Au–Ag interface. Surprisingly, when an ultrathin MgO (insulating) layer of optimum thickness is introduced between the CsPbBr3 and Au–Ag films, the charge transfer is further facilitated with the average lifetime of carriers becoming even shorter. By changing the thickness of the thin MgO layer, the carrier lifetime can in fact be tuned; with the charge transfer getting fully blocked for thick enough MgO layers, as expected. Our study thus throws light on the charge-carrier dynamics in halide perovskites, which is of importance to emergent optoelectronic applications." @default.
• W3027611421 created "2020-05-29" @default.
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• W3027611421 date "2020-05-18" @default.
• W3027611421 modified "2023-10-17" @default.
• W3027611421 title "Dynamics of Photo-Generated Carriers across the Interface between CsPbBr₃ Nanocrystals and Au–Ag Nanostructured Film, and Its Control via Ultrathin MgO Interface Layer" @default.
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• W3027611421 doi "https://doi.org/10.1021/acsomega.9b03817" @default.
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• W3027611421 hasPublicationYear "2020" @default.
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