Synthesis and luminescent properties of Sr3Al2O5Cl2: Eu2+, Dy3+ rod-like nanocrystals

White long afterglow phosphor Sr3Al2O5Cl2: Eu2+, Dy3+ with rod-like nano-crystals was obtained by the high temperature reaction, which exhibit white light with afterglow duration is about 0.5 h (>0.35 mcd/m2).72