Multifunctional near-infrared emitting Cr<sup>3+</sup>-doped Mg<sub>4</sub>Ga<sub>8</sub>Ge<sub>2</sub>O<sub>20</sub>particles with long persistent and photostimulated persistent luminescence, and photochromic propertiesYahong Jin, Zhongfei Mu, Haoyi Wu et al.|Journal of Materials Chemistry C|2016Cited by 146