A new type of blue phosphor K3Gd1-xB6O12:xCe3+: Synthesis and photoluminescence properties

作者：Zhang, Bo; Zhang, Rui-Juan^*; Zhong, Qiu; Wei, Wei^*

来源：Optik, 2018, 165: 345-350.

DOI：10.1016/j.ijleo.2018.04.002

• Blue phosphor
• Photoluminescence
• Borate

A series of Ce-doped phosphors K3Gd1-xB6O12:xCe(3+) (x = 0, 0.005, 0.01, 0.02, 0.03, 0.04) were synthesized by high-temperature solid state reaction method. The luminescence properties were investigated under UV (333 nm) excitation. Under 333 nm light excitation, K3Gd1-xB6O12:xCe(3+) exhibits intense blue emission centered at 405nm, due to the 4f(1)(F-2(5/2))-> Af degrees 5d(1) transition of Ce(3+ )activator. The optimum doping concentrations was found to be x=2%. The bi-exponential behavior of the decay curves of phosphor K3Gd0.98B6O12:0.02Ce(3+) reveals that the Ce3+ activators can reside in two unique crystallographic distinct sites (Gd3+ sites), which fits well with the XRD analysis. One may expect that K3Gd1-xB6O12:xCe(3+) has the potential be used as a green phosphor activated by near near-UV light.

• 出版日期2018
• 单位河南理工大学; 首都师范大学