论文部分内容阅读
New phosphors Sr2 Zn Si2O7: M(M=Mn2+, Tb3+) were synthesized through solid-state reaction, and their photoluminescent properties under UV and VUV region were investigated. The results showed that Sr2 Zn Si2O7:Mn2+ emitted green light with the strongest emission peak centered at 525 nm, and its quenching concentration under 254 and 147 nm excitation occurred at x = 0.08 and 0.06, respectively. Sr2 Zn Si2O7: Tb3+ emitted green light with the strongest emission peak centered at 541 nm, and its quenching concentration under 254 and 147 nm excitation also appeared at y = 0.25. At 147 nm excitation, the emission intensities of Sr2Zn0.94Si2O7: 0.06Mn2+ and Sr1.75 Zn Si2O7: 0.25Tb3+ phosphors were 54% and 36% of that of Zn1.96 Si O4:0.04Mn2+, respectively. And their decay times(τ1/e) were about 3.18 ms and 3.9 ms, respectively.
New phosphors Sr2 Zn Si2O7: M (M = Mn2 +, Tb3 +) were synthesized through solid-state reaction, and their photoluminescent properties under UV and VUV regions were investigated. The results showed that Sr2 Zn Si2O7: Mn2 + emitted green light with the strongest emission The peak centered at 525 nm and its quenching concentration under 254 and 147 nm excitation occurred at x = 0.08 and 0.06, respectively. Sr2 Zn Si2O7: Tb3 + emitted green light with the strongest emission peak centered at 541 nm, and its quenching concentration under 254 and 147 nm excitation also showed at y = 0.25. At 147 nm excitation, the emission intensities of Sr2Zn0.94Si2O7: 0.06Mn2 + and Sr1.75 ZnSi2O7: 0.25Tb3 + phosphors were 54% and 36% of that of Zn1.96SiO4 : 0.04Mn2 +, respectively. And their decay times (τ1 / e) were about 3.18 ms and 3.9 ms, respectively.