Multicolor tunable Bi 3+ ,Sm 3+ co-doped Sr 2 GdGaO 5 phosphor and its application in optical thermometry

Multicolor tunable and high sensitivity optical thermometry was realized by introducing Al 3+ ions to occupy Ga 3+ sites in Bi 3+ ,Sm 3+ co-doped Sr 2 GdGa 1− z Al z O 5 phosphor.