Combinatorial Optimization of (Lu_(1-x)Gd_x)3Al5O_(12):Ce(3y) Yellow Phosphors as Precursors for Ceramic Scintillators

摘要

A combinatorial chemistry method was employed to screen the yellow phosphors of (Lu_(1-x)Gd_x)3Al5O_(12):Ce(3y) , as luminescenet materials. An array of 81 compositions was synthesized by inkjetting nitrate solutions into microreactor wells and sintering at high temperature. The candidate formulations were evaluated by luminescence pictures, and the optimal composition was determined to be Lu_(2.7)Gd_(0.3)Al5O_(12):Ce_(0.045) after scale-up and detailed characterization. Lu_(2.7)Gd_(0.3)Al5O_(12):Ce_(0.045) was also found to have a short decay time (<53.97 ns). These results demonstrate the great potential of the Lu_(207)Gd_(0.3)Al5O_(12):Ce_(0.045) as a component of ceramic scintillators.