K3Gd(PO4)2:RE3+ (RE = Eu, Tb) are prepared by solid-state reaction and their photoluminescence (PL) properties are investigated under UV and VUV excitation, respectively. The obtained experimental data show that no energy transfer happens among the activator ions Tb3+ or Eu3+ under UV excitation. Under 147-nm excitation, the strongest emission intensity of K3Gd(PO4)2:RE3+ (RE = Eu, Tb) is obtained when the activator ions Tb3+ or Eu3+ concentration is 0.8 mol, the integrate emission intensity of K3Gd0.2(PO4)2:0.8Tb3+ is about 204% of commercial phosphor Zn1.96SiO4:0.04Mn2+ with chromaticity coordinates of (0.340, 0.561) and the decay time of about 5.09 ms under 147-nm excitation. We analyze the experimental data and propose a possible energy-transfer mechanism under 147-nm excitation.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.