A novel emitting color tunable phosphor Ba3Gd(PO4)(3): Ce3 , Tb3 based on energy transfer

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

来源：Physica B: Condensed Matter , 2014, 436: 105-110.

DOI：10.1016/j.physb.2013.11.058

• Phosphor
• Energy transfer
• Mechanism
• Tunable emission
• White light

A novel emitting color tunable phosphor Ba3Gd(PO4)(3): Ce3 , Tb3 was synthesized by the traditional high temperature solid state reaction method. The photoluminescence (PL) and energy transfer (ET) properties of Ce3 and Tb3 doped Ba3Gd(PO4)(3) host were studied in detail. The obtained phosphors show both a blue emission from Ce3 and a yellowish-green emission from Th3 with considerable intensity under ultraviolet (UV) excitation (similar to 310 nm). When the content of Ce3 was fixed at 0.05, the emission chromaticity coordinates could be adjusted from blue to green region by tuning the contents of Tb3 ions from 0.01 to 0.5 through an ET process. The critical distance between Ce3 and Tb3 is 16.16 angstrom, The ET mechanism from Ce3 to Tb3 ions was proved to be dipole-dipole interaction. The developed phosphor exhibits a strong excitation in UV spectral region and high efficient ET from Ce3 to Th3 ions. It may find applications as a green light-emitting UV-convertible phosphor in white LED devices. Furthermore, a white light emission phosphor Ba3Gd(PO4)(3): Ce3 , Tb3 , Mn2 was also investigated.

• 出版日期2014-3-1
• 单位广东工业大学