Excitation wavelength tunable white light emission in vacancy-ordered double perovskite

Abstract

Single matrix white luminescent materials are relatively rare. Here, we report an excitation wavelength-dependent Cs₂HfCl₆:<i>x</i>Sb (CHC:<i>x</i>Sb) vacancy-ordered double perovskite where, by adjusting the excitation wavelength, different types of white light emission can be obtained.