Tunable dual‐mode emission with excellent thermal stability in Ca4ZrGe3O12:Eu phosphors prepared in air for NUV‐LEDs

This work was financially supported by the National Natural Science Foundation of China (Grant No. 51802285, 11974315, 11804303), the Natural Science Foundation of Zhejiang Province (Grant No. LQ18A040004), the Open Fund of the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology).