A Strategy for the Synthesis of Oxonitridosilicate Phosphors from Anionic Condensation
Source abstract
Abstract
The exploration of new luminescent materials is driven by potential applications in solid-state lighting and display technologies. In this paper, we employed an anionic condensation approach to craft novel oxonitridosilicate compounds by substituting 3O 2– with 2N 3– in a carefully selected system. This approach enabled us to synthesize a highly condensed oxonitridosilicate compound LaSr 4 Si 5 N 9 O 2, which crystallizes in the orthorhombic crystal system with the space group Ama 2 (no. 40) and lattice parameters a = 9.2986(1) Å, b = 23.4382(1) Å, c = 5.371(1) Å, V = 1170.55(1) Å 3, and Z = 4. The condensation appears inside the layer, with dreier rings originating from neighboring tetrahedra connected by bridging nitride (N [2] ). This enriches the possibility of using the approach to design multiple layered or other featured oxonitridosilicates. Furthermore, we investigated the luminescence properties when doped with rare-earth ions. The Pr 3+ -doped LaSr 4 Si 5 N 9 O 2 exhibits a remarkably narrow-band red emission (λ em ≈ 618 nm, fwhm ≈ 54 nm) when excited by UV and blue light.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Inorganic Chemistry and Materials · Luminescence Properties of Advanced Materials · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an, Shaanxi Province 710062, P. R. China
Advanced Materials Research Group, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom
College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710062, China
School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, Shaanxi 710062, P. R. China
Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, Shaanxi Normal University, Xi’an, Shaanxi Province 710062, P. R. China
Funding
Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China
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