Luminescence Properties of Non-Rare Earth Activated Thermal Stability Blue-Violet Zn3B2O6∶Bi3+Phosphor
The rapid development of modern completely artificial light-controlled plant growth requires the light source increasingly stringent.Blue-violet phosphor with high luminous intensity and good thermal stability is the key material for plant growth.Herein,narrow-band blue-violet Zn3B2O6∶xBi3+(0≤x≤0.03)phosphor with excellent thermal stability was synthesized by solid-state reaction.The results of XRD and energy spectra analysis show that Bi3+successfully entered Zn3B2O6 lattice.The fluorescence spectrum of Zn3B2O6∶Bi3+phosphor shows narrow-band blue-violet light at 430 nm(3P1～1 S0),and the full width at half maximum is only 56 nm.The optimal Bi3+doping concentration is 0.02.According to the excitation spectrum shape and the lifetime decay behavior,it is proved that Bi3+only occupies Zn sites in Zn3B2O6.The emission peak intensity and integrated area of Zn3B2O6∶0.02Bi3+phosphor at 423 K are both 85％of those at room temperature,indicating that the sample has excellent thermal stability and may have potential application in high-temperature devices.The emission spectrum of Zn3B2O6∶0.02Bi3+phosphor accounts for 70.4％and 84.6％of the absorption spectra(370～525 nm)of chlorophyll a/b,respectively,indicating the potential application of as-prepared blue-violet phosphors in the field of plant growth.
万方数据
