Perovskite Quantum Dots Perovskite Cd-free quantum dots, 480 ± 15 nm, 515 ± 15 nm and 550 ± 15 nm, coated with hydrophobic ligands. Readily soluble in toluene, chloroform and similar solvents. Not soluble in alcohols, ethers and polar solvents. (FWHM) 15-35 nm. Particle size 10 nm