Fig. 6: Photostability of the CsPbBr₃–SiO₂–HF.

a Photostabilities of the CsPbBr₃–SiO₂–HF, ceramic Sr₂SiO₄: Eu²⁺ green phosphor, KSF red phosphor, colloidal CsPbBr₃ NCs and CdSe/CdS/ZnS NCs under illumination, sealed with Norland-61 on the LED chips (20 mA, 2.7 V) and b aged at 85 °C and 85% humidity conditions on the LED chips (20 mA, 2.7 V).