Solvent-free synthesis of stable heterostructured-CsPbBr3/Cs2PbBr5 assisted by SiO2 for white light-emitting diodes

We developed a facile synthesis for preparation of stable CsPbBr 3 /Cs 2 PbBr 5 heterostructures at room temperature, which could be used to scale up production of perovskite phosphors without compromising their performance. This process used SiO 2 nanospheres to avoid using hazardous organic solvents.