Back to Search
Start Over
Synthesis and characterization of a far-red-emitting Sr2ScNbO6: Mn4+ phosphor for short-day plant cultivation.
- Source :
-
Journal of Alloys & Compounds . Nov2023, Vol. 964, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Far-red phosphors with higher thermal stability and exhibit excellent spectral compatibility with the far-red light phytochrome (P FR) absorption spectrum. They are currently a research hotspot and widely applied in plant growth lamps. In this study, we have prepared a Mn4+-activated Sr 2 ScNbO 6 far-red phosphor by using the high temperature solid phase method in air. The strongest excitation center of the Sr 2 ScNbO 6 : Mn4+ phosphor was located at 365 nm. Due to the 2E g →4A 2 g transition, this phosphor generates strong deep-red light at 703 nm, which significantly overlaps with the absorption spectrum of plant phytochrome P FR. The variable temperature photoluminescence (PL) emission spectra from 303 K to 503 K confirmed this phosphor possesses relatively good thermal stability. In addition, the concentration quenching effect and the thermal quenching mechanism are studied in detail. The results demonstrate that Sr 2 ScNbO 6 : 0.4 % Mn4+ phosphor provides a novel choice for the far-red phosphor required for short-day plant cultivation. • A double perovskite phosphor Sr 2 ScNbO 6 : Mn4+ was synthesized. • Sr 2 ScNbO 6 : Mn4+phosphor shows relatively good thermal stability, I 423 K /I 303 K ≈ 44 %. • The Mn4+ far-red emission matches well with the absorption spectral of P FR. • The materials show promising application in the field of short-day plant cultivation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 964
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 165468758
- Full Text :
- https://doi.org/10.1016/j.jallcom.2023.171333