Co-doping of Sb3+/Ln3+ in the Cs2NaGdCl6 perovskite leads to efficient energy transfer and single-host white light emission

Sb 3+ /Ln 3+ co-doped Cs 2 NaGdCl 6 double perovskite was prepared. The energy transfer relationship between Sb 3+ and Tb 3+ was explored. White phosphors with CIE coordinates of (0.34, 0.33) were obtained by introducing Ho 3+ into the Cs 2 NaGdCl 6 :Sb 3+ ,Tb 3+ .