Tunable emission and thermal sensitivity via energy transfer from Bi3+ to Eu3+ in BaY2Al2Ga2GeO12

Eu 3+ occupies the central lattice of the octahedron with inverted symmetry in BYAGGO:Eu 3+ , while Eu 3+ expands to the asymmetric dodecahedron center in BYAGGO:Eu 3+ , Bi 3+ . There is also efficient transfer from Bi 3+ to Eu 3+ in BYAGGO:Eu 3+ , Bi 3+ .