Molten salts synthesized L‐Ta2O5:Er3+/Yb3+ with superior pure green upconversion luminescence. - Fan, Yuhan; Cao, Yongze; Li, Meiling; Li, Guojian; Sun, Shang; Wang, Yichao; Sai, Xu; Zhang, Jinsu; Chen, Baojiu (Journal of the American Ceramic Society, 2025)