中文摘要：

The photoluminescence properties and energy transfer of a new Ce3+/ Pr3+/ Eu3+co-doped solid-solution composition of Sr2.975-xLaxAlO4+xF1-x(LSAF) phosphor are investigated. Upon doping Pr3+into lattices of LSAF:Ce host,a shoulder emission peak is observed at about 620 nm, owing to the transition of1D2→3H4. Addition of Eu3+to LSAF:Ce3+, Pr3+phosphor results in a sharp emission peaked at 675 nm for the5D0→7F3transition and an increase of the intensity of red emission for Pr3+with increasing Eu3+concentration. The pathways of energy transfer among Ce3+, Pr3+, and Eu3+are proposed to be responsible for color addition of a red component to the primary yellow emission,enabling a potential adjustable color for blue excitable warm white.

英文摘要：

The photoluminescence properties and energy transfer of a new Ce3＋/pr3＋/Eu3＋ co-doped solid-solution composi- tion of Sr2.975-xLaxAlO4＋xF1-x （LSAF） phosphor are investigated. Upon doping Pr3＋ into lattices of LSAF：Ce host, a shoulder emission peak is observed at about 620 nm, owing to the transition of 1D2 →3H4. Addition of Eu3＋ to LSAF：Ce3＋, Pr3＋ phosphor results in a sharp emission peaked at 675 nm for the 5D0 →TF3 transition and an increase of the intensity of red emission for Pr3＋ with increasing Eu3＋ concentration. The pathways of energy transfer among Ce3＋, Pr3＋, and Eu3＋ are proposed to be responsible for color addition of a red component to the primary yellow emission, enabling a potential adjustable color for blue excitable warm white.