A Synthetic Method for Extremely Stable Thin Film of CsPbBr3 QDs and its Application on Light-emitting Diodes

The ability to be mixed with the polymers is very important for applications of perovskite quantum dots (QDs), such as in display, lighting and so on. Here, a method for fabricating a thin film composed of CsPbBr
₃
QDs and polydimethylsiloxane (PDMS) was reported. By using the ethyl acetate, a large number of ligands on the surface were removed and the combination with polymers can realize. Based on the thin film, an LED device was assembled and its luminous flux, luminous efficiency, color temperature and CIE color coordinates were measured. What's more, the thin film revealed a splendid stability after being stored for 42 days without any protection, which show the broad prospects of it.