BAN Jifeng, LI Zhonghui, ZHANG Xinglong, LIU Changli, ZHAO Xingsheng, ZHOU Hengwei, JIANG Xiaokang. Energy transfer mechanism and tunable luminescence in Cs2NaGdCl6 double perovskite codoped with Sb3+ and Er3+J. Acta Physica Sinica, 2026, 75(3): 030816. DOI: 10.7498/aps.75.20251424