Surface energy transfer in hybrid halide perovskite/plasmonic Au nanoparticle composites. Issue 33 (13th August 2021)

• Record Type: Journal Article
• Authors: Ramos-Terrón, Susana; Alba-Molina, David; Varo, M. Ángeles; Cano, Manuel; Giner-Casares, Juan José; de Miguel, Gustavo
• Is Part Of: Nanoscale. Volume 13:Issue 33(2021)
• Page Start: 14221
• Page End: 14227
• Publication Date: 2021-08-13
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d1nr03760a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Controlling the distance between MAPbI3 and Au NPs allows tuning the quenching of the photoluminescence of hybrid halide perovskites. The surface energy transfer mechanism accounted for this change in the quenching efficiency. Abstract : The incorporation of plasmonic metal nanoparticles (NPs) into the multilayered architecture of perovskite solar cells (PSCs) has been a recurrent strategy to enhance the performance of photovoltaic devices from the early development of this technology. However, the specific photophysical interactions between the metal NPs and the hybrid halide perovskites are still not completely understood. Herein, we investigate the influence of Au NPs on the photoluminescence (PL) signal of a thin layer of the CH3 NH3 PbI3 hybrid perovskite. Core–shell Au@SiO2 NPs with a tunable thickness of the SiO2 shell were used to adjust the interaction distance between the plasmonic NPs and the perovskite layer. Complete quenching of the PL signal in the presence of the Au NPs is measured together with the gradual recovery of the PL intensity at a thicker thickness of the SiO2 shell. A nanometal surface energy transfer (NSET) model is employed to reasonably fit the experimental quenching efficiency. Thus, the energy transfer deactivation is revealed as a detrimental process occurring in the PSCs since it funnels the photon energy into the non-active excited state of the Au NPs. This work indicates that tuning the distance between the plasmonic NPs and the perovskite materials by a silica shell may be a simple and straightforward strategy for further improving the efficiency of PSCs.