Chloride Double Perovskites Doped With Sb/Er as Stable and Effective Luminescence Material in the Vis-NIR Region.

The luminescence properties of stable chloride double perovskites CsBInCl, where B is 4 at.% Ag, 6 at.% Na, doped with Sb and Er  were investigated for the first time in the 250-1600 nm region and revealed significant potential for advanced application.