Yang Hucheng, Lakshminarayana G, Zhou Shifeng, Teng Yu, Qiu Jianrong
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Opt Express. 2008 Apr 28;16(9):6731-5. doi: 10.1364/oe.16.006731.
Aluminum-lanthanum-silicate glasses with different Eu doping concentration have been synthesized by conventional melt-quenching method at 1680 degrees C in reductive atmosphere. Under 395nm excitation, samples with low Eu doping concentration show mainly the cyan broad emission at 460nm due to 4f(6)5d(1)-4f(7) transition of Eu(2+); and the samples with higher Eu doping concentration show mainly some narrow emissions with maximum at 616nm due to (5)D(0)-(7)F(j) (J=0, 1, 2, 3, 4) transitions of Eu(3+). Cyan-white-red tunable luminescence under 395nm excitation has been obtained by changing the Eu doping concentration.
采用传统熔体淬火法，在1680℃的还原气氛中合成了不同铕掺杂浓度的铝镧硅酸盐玻璃。在395nm激发下，低铕掺杂浓度的样品主要由于Eu(2+)的4f(6)5d(1)-4f(7)跃迁而在460nm处呈现蓝绿色宽发射；而高铕掺杂浓度的样品主要由于Eu(3+)的(5)D(0)-(7)F(j)（J = 0, 1, 2, 3, 4）跃迁而在616nm处呈现一些窄发射峰。通过改变铕掺杂浓度，在395nm激发下获得了蓝白红可调谐发光。
