Combinatorial chemistry of oxynitride phosphors and discovery of a novel phosphor for use in light emitting diodes, Ca1.5Ba0.5Si5N6O3:Eu2+†
Abstract
Solid-state combinatorial chemistry (combi-chem) has been proven to be a versatile tool for the discovery of novel phosphors in the multi-compositional (oxy)nitride search space. Since the advent of a unique solid-state combi-chem technique involving heuristic optimization strategies such as a non-dominated sorting genetic algorithm (NSGA), we have discovered several novel phosphors. The present investigation was focused on a phosphor that was previously discovered using this technique, but was incompletely identified, on pinpointing the optimum processing composition of the discovered phosphor exhibiting promising PL properties with the assistance of particle swarm optimization (PSO), and on identifying the exact structure based on