Narrow-band blue emitting nitridomagnesosilicate phosphor Sr8Mg7Si9N22:Eu2+ for phosphor-converted LEDs

Chao Li; Hong-Wei Zheng; Heng-Wei Wei; Jie Su; Fu-Hui Liao; Zhen-Yi Zhang; Ling Xu; Zu-Pei Yang; Xiao-Ming Wang; Huan Jiao

doi:10.1039/C8CC07218C

Narrow-band blue emitting nitridomagnesosilicate phosphor Sr₈Mg₇Si₉N₂₂:Eu²⁺ for phosphor-converted LEDs†

Chao Li,^a Hong-Wei Zheng,^a Heng-Wei Wei,

^a Jie Su,^b Fu-Hui Liao,^b Zhen-Yi Zhang,^c Ling Xu,

^a Zu-Pei Yang,

^ad Xiao-Ming Wang

*^a and Huan Jiao

*^a

Author affiliations

* Corresponding authors

^a Key Laboratory of Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi’an 710062, Shaanxi Province, P. R. China
E-mail: xmwang@snnu.edu.cn, jiaohuan@snnu.edu.cn

^b College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China

^c Bruker (Beijing) Scientific Technology Co., Ltd, Beijing 100081, P. R. China

^d School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, Shaanxi 710062, P. R. China

Abstract

We report a novel narrow-band blue emitting phosphor Sr_7.92Mg₇Si₉N₂₂:0.08Eu²⁺. The crystal structure of Sr₈Mg₇Si₉N₂₂ is composed of corner-sharing and edge-sharing [SiN₄] tetrahedra and distorted square-pyramid [MgN₅] polyhedra. Under 350 nm excitation, Eu²⁺ doped Sr₈Mg₇Si₉N₂₂ emits narrow-band blue light with maximum intensity at 450 nm and a fwhm of 38 nm.

Chemical Communications

Narrow-band blue emitting nitridomagnesosilicate phosphor Sr₈Mg₇Si₉N₂₂:Eu²⁺ for phosphor-converted LEDs†

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Narrow-band blue emitting nitridomagnesosilicate phosphor Sr₈Mg₇Si₉N₂₂:Eu²⁺ for phosphor-converted LEDs

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