A new broad-band infrared window material CdPbOCl2 with excellent comprehensive properties.

Herein, a new IR window material CdPbOCl2 is rationally designed and fabricated by a heavy-metal oxide and halide combined strategy. The millimeter-scale CdPbOCl2 single crystal exhibits a wide IR transparent region (1.4–18.0 μm) and excellent comprehensive properties. The results provide an insight into the exploration of broad-band IR window materials.