▎ 摘　　要

This study deals with the optimally designed blue and green emissive MAPbBr3 perovskite nanostructures (PNSs). Later PNSs were utilized as fluorescent material in a sandwich-design thin film luminescent solar concentrator (SD-TLSC). The fabricated SD-TLSC exhibits high performance with an impressive optical efficiency of 5.75% and a high average visible transmission (AVT) of 85.7%, which is the two-fold enhancement of the conventional single thin film LSC configuration. The high performance of the SD-TLC is induced by effective solar radiation absorption in the entire wavelength ranges, which is attributed to its unique morphology that exhibit different PL emission. These ground-breaking results pave the way for the potential practical use of perovskite-based SD-TLSC as solar windows, marking a major advancement in the field of building-integrated photovoltaic (BIPV).