Deep‐red‐emitting Ca2ScSbO6:Mn4+ phosphors with a double perovskite structure: Synthesis, characterization and potential in plant growth lighting

Mn4+‐activated double‐perovskite type Ca2ScSbO6 (CSS) phosphors were synthesized via a high‐temperature solid‐state reaction. The phase purity and crystal structure of obtained samples were investigated by powder X‐ray diffraction (XRD). The successful incorporation of Mn4+ ions into CSS lattice was...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2022-03, Vol.105 (3), p.2094-2104
Main Authors: Chen, Zhanglin, Tian, Zhaobo, Zhang, Jie, Li, Fei, Du, Songmo, Cui, Wei, Yuan, Xuanyi, Chen, Kexin, Liu, Guanghua
Format: Article
Language:English
Subjects:
Chromaticity
Crystal structure
Excitation
Excitation spectra
Fluorescence
Lighting
luminescence
Manganese ions
Mathematical analysis
Optical properties
perovskite
Perovskite structure
Perovskites
Phosphors
Photoelectrons
Photoluminescence
Plant growth
plant growth lighting
Room temperature
Structural analysis
Temperature dependence
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Mn4+‐activated double‐perovskite type Ca2ScSbO6 (CSS) phosphors were synthesized via a high‐temperature solid‐state reaction. The phase purity and crystal structure of obtained samples were investigated by powder X‐ray diffraction (XRD). The successful incorporation of Mn4+ ions into CSS lattice was confirmed by the combination of energy‐dispersive X‐ray spectra (EDX) and X‐ray photoelectron spectra (XPS) results. The luminescent properties of the CSS phosphors, including the photoluminescence (PL) and PL excitation (PLE) spectra, commission international de l'clairage (CIE) chromaticity coordinates, fluorescence decay curves, quantum yields and temperature‐dependent PL spectra, were investigated in detail. Under 310‐nm excitation, the optimized CSS:0.3%Mn4+ phosphor exhibited bright deep‐red emission covering a narrow band from 640 nm to 720 nm, which overlaps with the absorbance of phytochromes. The Racah parameters B, C, and local crystal strength Dq were calculated to be 870, 2703, and 1984 cm–1, respectively. Particularly, the emission intensity of CSS:0.3%Mn4+ still remained 61.4% at 423 K compared with that at room temperature. Therefore, all these outstanding luminescent properties provided the as‐synthesized phosphors a great potential in plant growth lighting.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.18221