Highly Efficient and Thermally Stable Blue-Green (Ba_0.8Eu_0.2O)(Al₂O₃)_4.575×(1+x) Phosphor through Structural Modification

Exploring phosphors with high quantum efficiency (QE) and thermal stability is an important issue for their application in white light-emitting diodes (LEDs). In this work, the crystal structure and luminescent properties of Eu2+-activated aluminate phosphors with a normal composition (Ba0.8Eu0.2O)(Al2O3)4.575×(1+x) (short for BA1+xO:0.2Eu2+) were studied. Although the crystal structures of BA1+xO:0.2Eu2+ have a same space group, the increase of...