Performance characterization and properties of Ba3-xB6Si2O16:xSm3+ luminescent materials
A series of Ba3B6Si2O1∶6 Sm3+ phosphors were prepared by high temperature solid phase method.The X-ray diffractometer(XRD),Photoluminescence(PL),UV-Vis DRS and other related properties of these samples were studied and characterized.The influence of Sm3+ ion concentration on the luminescence properties was also discussed.Experimental results show that Ba3-xB6Si2O1∶6 x Sm3+ samples can simultaneously emit 571 nm(yellow light)and 606 nm(orange light)fluorescence under 405 nm near-ultraviolet light excitation,correspond-ing to Sm3+ ion 4G5/2→6H5/2 and 4G5/2→6H7/2 energy level transitions.When x = 0.21,Ba0.79B6Si2O1∶6 0.21Sm3+ phos-phor exhibits the strongest luminescence performance.Then the concentration of Sm3+ions was increased,and the concentration quenching phenomenon appeared.The concentration quenching mechanism can be explained by the interaction between adjacent Sm3+ ions.The prepared phosphor Ba3B6Si2O1∶6 Sm3+ can be effectively ex-cited by near ultraviolet light,which has a potential application prospect in the field of white LED.
Sm3+doped red luminescent materialrare earth ionluminescent materialsquenching mechanism
NETL
NSTL
万方数据
