This study uses the benefits of two-dimensional bi-metallic MgAl-layered double hydroxides (LDHs) to couple with luminescent carbon dots and facilitate the sunlight harvesting and emission in luminescent solar concentrators (LSCs). The luminescent agent showed a solvatochromic behavior with bright green (λemis= 526 nm), yellow (λemis= 547 nm), and orange (λemis= 573 nm) emissions in DMSO, ethanol, and water, respectively. They were initially mixed with polyvinylpyrrolidone (PVP) and deposited on glass waveguides with dimensions of 5×5×0.6 cm3 and G-factor of 2.08. Equipped by the commercial solar cells in the edges, the optoelectronic and geometrical features of the fabricated LSCs were measured. The best result was obtained for the composites soluble in ethanol with optical efficiency of 2.02%. The fill factor (FF) remains within a narrow range (0.49–0.63), suggesting that changes in solvent and precursor concentration predominantly influence the optical performance of the concentrator rather than the electrical characteristics of the photovoltaic cells themselves. The luminescent devices were all quite transparent under sunlight with well-enough high performance, proposing them as nice candidate for agrivoltaics.
