Cyan-white-red luminescence from europium doped Al2O3-La2O3-SiO2 glasses.
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.
Yang
Hucheng
H
State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China.
Lakshminarayana
G
G
Zhou
Shifeng
S
Teng
Yu
Y
Qiu
Jianrong
J
D003116:Color; D005063:Europium / Q000737:chemistry*; D005898:Glass / Q000737:chemistry*; D049449:Luminescence; D012822:Silicon Dioxide / Q000737:chemistry*; D013057:Spectrum Analysis
C530459:Al2O3-La2O3-SiO2 glass; D005063:Europium; D012822:Silicon Dioxide