Efficiently boosting the optical performances of laminated luminescent solar concentrators via combing blue-white light-emitting carbon dots and green/red emitting perovskite quantum dots

• The mutli-emission laminated luminescent solar concentrators (LSCs) were created by using blue-white light-emitting carbon dots (BWCDs), green/red perovskite quantum dots (QDs) as fluorescent materials. • The mutli-emission laminated LSCs (25×25×2.0 mm 3 ) not only achieved the maximum external optical efficiency ( η opt ) of 3.76%, but showed good transmittance of above 40% over 520 nm of light wavelength. • The multi-emission strategy can effectively simulate the sunlight spectrum, enabling the multi-emission LSCs with high performances. Full spectrum/white light-emissive luminescent materials play a key role in boosting the performances of luminescent solar concentrators (LSCs). In this work, a novel type of blue-white light-emitting carbon dots (BWCDs) have first been synthesized by one-step solvothermal strategy based on trisodium citrate and glutathione. The BWCDs solution show broad photoluminescence (PL) emission spectrum from 400 to 700 nm and high PL quantum yields (PLQYs) of 13.82%. A laminated BWCDs based polymer LSC, comprising glass/BWCDs based polymer film/glass, is then created via one-step photopolymerization technique. To simulating the sunlight spectrum, green/red emitting CsPbBr 3 /CsPbI 3 quantum dots (G/RQDs) have further been synthesized and used to coat the bottom and top glass surfaces of laminated BWCDs LSCs, respectively, finally forming multi-emission laminated LSCs. The mutli-emission laminated LSCs (25×25×2.0 mm 3 ) based on BWCDs and G/RQDs exhibit an external optical efficiency ( η opt ) of 3.76%. Compared to the BWCDs based LSCs, ∼176% enhancement in η opt has been realized. Besides, the multi-emission laminated LSCs exhibit a good transmittance of above 40% over 520 nm of light wavelength.