Long-term stable stacked CsPbBr3quantum dot films for highly efficient white light generation in LEDs

We report highly efficient ethyl cellulose with CsPbBr₃ perovskite QD films for white light generation in LED application. Ethyl cellulose with CsPbBr₃ quantum dots is applied with Sr₂Si₅N₈ : Eu²⁺ red phosphor on an InGaN blue chip, achieving a highly efficient luminous efficacy of 67.93 lm W^-1 under 20 mA current.