1. Narrow-band red emitting oxonitridosilicate phosphor La4−xSr2+xSi5N12−xOx:Pr3+ (x ≈ 1.69).
- Author
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Zheng, Hong-Wei, Wang, Xiao-Ming, Wei, Heng-Wei, Zheng, Yu, Yin, Cong-Ling, Yang, Zu-Pei, and Jiao, Huan
- Subjects
PRASEODYMIUM ,SILICON nitride ,X-ray powder diffraction ,PHOSPHORS ,BLUE light ,SPACE groups ,CRYSTAL structure - Abstract
The new oxonitridosilicates Ln
4−x Sr2+x Si5 N12−x Ox (Ln = La, Ce) were synthesized by high temperature solid-state reactions. The crystal structures were solved and refined from both single-crystal and powder X-ray diffraction data. These oxonitridosilicate compounds crystallize in the monoclinic space group P21 /n (no. 14) and exhibit a double-layer structure made up of corner-sharing Si(O/N)4 tetrahedra. When excited with near-UV and blue light, the Pr3+ doped La2.31 Sr3.69 Si5 N10.31 O1.69 phosphor shows a narrow-band red emission peaking at 625 nm with a full width at half-maximum of 40 nm. [ABSTRACT FROM AUTHOR]- Published
- 2021
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