Optimizing MAPbBr3 quantum dots based luminescent solar concentrators for enhanced photoelectric performance and aesthetic characteristics

Luminescent solar concentrators (LSCs) hold tremendous potential in building-integrated photovoltaic (BIPV) applications, offering a balance between electricity generation and aesthetic appeal. However, achieving LSCs with both high aesthetic appeal and excellent photo-electric performance remains a significant challenge. Herein, MAPbBr3 (MA = CH3NH3) organic-inorganic hybrid perovskite quantum dots (QDs) are incorporated with the off-stoichiometric thiol-ene (OSTE) polymers to fabricate the LSCs. Benefited from the high photoluminescence quantum yield (PLQY) and low photon reabsorption losses of MAPbBr3 QDs, the optimal edge quantum efficiency (fledge) and internal quantum efficiency (flint) of LSCs are 69.41 % and 21.24 %, respectively. After coupling with Si solar cells, the luminescent solar concentrator integrated photovoltaics (LSC-PV) show a high optical efficiency of 3.37 % under AM 1.5G solar illumination. In addition, the LSCs possess the excellent color rendering index (CRI) of 97.09, an average visible transmittance (AVT) of 74.47 %, and the aesthetic parameters with higher color saturation index (Rf) of 95.8 and the TM-30 color fidelity index (Rg) of 102.6, exhibiting a promising potential in BIPVs.