来源：ACS Publications
The development of innovative luminescent materials for lighting and display applications is an important research field. In this work, we have employed an anionic condensation approach to discover a novel oxonitridosilicate synthesized via Li metal flux. LaSi2N3O crystallizes in the orthorhombic space group Pna21 (a = 7.82609(6), b = 18.24908(15), and c = 4.86567(5) Å) with a structure consisting of [Si6N12O2] ribbons cross-linked by [SiN3O] tetrahedra. This follows previously reported structural rules for a series of condensed rare-earth oxonitridosilicates, and discovery of this relatively simple composition verifies the design principles. Ce3+-doped LaSi2N3O is a highly efficient blue phosphor with peak emission at 450 nm under 390 nm excitation and a quantum yield of 72.0% and demonstrates strong potential for near-UV phosphor applications.