Deciphering Er3+ energy level population in La2Sn2O7 nanocrystals via tailored short-range energy transfer for multidimensional applications - Jiamei Ren; Bin Duan; Kejie Li; Jiaqi Zhao; Dongxu Guo; Ruiying Lu; Tianqi Sheng; Zuoling Fu (Chemical Engineering Journal, 2026)