Origin of the Unusual Narrowband Near-Infrared Emission from Cr 3+ -Doped Oxides - Yu Xiao; Wenge Xiao; Tianxiang Zheng; Hao-Ran Zhao; Ping Du; Rui Zhang; Chenjie Lou; Mingxue Tang; Ming-Xing Chen; Wanliang Yang; Ling-Dong Sun; Chun-Hua Yan (Journal of the American Chemical Society, 2026)