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- Title
Red emission from a novel rare earth free oxide-based CaO–0.5Al2O3–0.5Nb2O5:Mn4+ phosphor with high water-resistance property.
- Authors
He, Dongyu; Fang, Yongzheng; Zhang, Ganghua; Zhou, Yan; Liu, Yufeng; Zhao, Guoying; Hou, Jingshan
- Abstract
A 657 nm red emission from a novel rare earth free oxide-based CaO–0.5Al2O3–0.5Nb2O5:xMn4+ (0.001 ≤ x ≤ 0.008) phosphors with high water-resistance property were prepared by solid-state reaction method. The composition and structure of the as-prepared phosphors was studied. Under relative ultraviolet (331/365 nm) and blue (465 nm) light excitation, the as-prepared phosphor presents a 657 nm red emission that assigned to the 2Eg → 4A2g transition of Mn4+ ions. The red light source in CaO–0.5Al2O3–0.5Nb2O5:Mn4+ system was discussed, and the water resistance property of the phosphor was also investigated. The as-prepared phosphor presents more proper red emission position than those of similar oxide-based Mn4+-activated phosphors and shows excellent water-resistance property compared with commercial used K2SiF6:Mn4+ phosphor. With the further optimization of its photo-luminescent properties, the as-prepared CaO–0.5Al2O3–0.5Nb2O5:Mn4+ phosphors may find its potential application in the field of white LEDs.
- Subjects
PHOSPHORS; RARE earth oxides; PHOSPHORUS in water; LIGHT sources; COMMERCIAL real estate
- Publication
Journal of Materials Science: Materials in Electronics, 2020, Vol 31, Issue 4, p3057
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-019-02850-4