I’m not savvy enough to know what this may mean to flashlights world, but maybe someone knows better:
New Ceramic Phosphors for High Power LED Lights Could Save 20–30% More Energy
Original Article:
Reference: “Al2O3–Ce:YAG and Al2O3–Ce:(Y,Gd)AG composite ceramics for high brightness lighting: Effect of microstructure” by D. Yu. Kosyanov, Xin Liu, A. A. Vornovskikh, A. A. Kosianova, A. M. Zakharenko, A. P. Zavjalov, O. O. Shichalin, V. Yu. Mayorov, V. G. Kuryavyi, Xinglu Qian, Jun Zou and Jiang Li, 6 January 2021, Materials Characterization. DOI: 10.1016/j.matchar.2021.110883