A novel orange emitting long afterglow phosphor Ca3Si2O7:Eu2 and the enhancement by R3 ions (R=Tm, Dy and Er)

作者：Jin, Yahong; Hu, Yihua^*; Chen, Li; Wang, Xiaojuan; Mu, Zhongfei; Ju, Guifang; Wang, Tao

来源：Materials Letters, 2014, 126: 75-77.

DOI：10.1016/j.matlet.2014.04.029

• Luminescence
• Optical materials and properties
• Orange afterglow
• Defects

A novel orange emitting long afterglow phosphor Ca3Si2O7:Eu2 was prepared successfully via a traditional high temperature solid-state reaction method. The co-doping of Tm3 , Dy3 and Er3 ions into Ca3Si2O7:Eu2 separately can increase the trap density and/or produce new traps with suitable depth. They can enhance the brightness of afterglow and prolong the afterglow duration significantly. The duration of Eu2 solely doped and Eu2 , Tm3 co-doped Ca3Si2O7 phosphors can last 100 s and more than 15 min, respectively. Both the samples co-doped by Dy3 and Er3 can last more than 10 min. The mechanism of afterglow was discussed briefly.

• 出版日期2014-7-1
• 单位广东工业大学