Preparation, characterization, and luminescence properties of double perovskite SrLaMgSbO6:Mn4+ far-red emitting phosphors for indoor plant growth lighting. Issue 61 (15th October 2018)

• Record Type: Journal Article
• Authors: Sun, Liangling; Liang, Jia; Devakumar, Balaji; Sun, Qi; Wang, Shaoying; Li, Bin; Huang, Xiaoyong
• Is Part Of: RSC advances. Volume 8:Issue 61(2018)
• Page Start: 35187
• Page End: 35194
• Publication Date: 2018-10-15
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra06983b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Novel far-red emitting double perovskite SrLaMgSbO6 :Mn 4+ phosphors were prepared and their photoluminescence properties were studied for applications in indoor plant growth lighting. Abstract : Mn 4+ -activated SrLaMgSbO6 far-red emitting phosphors with double perovskite structure were prepared by traditional solid-state reaction. The research on the crystal structure of the SrLaMgSbO6 :0.8%Mn 4+ (SLMS:0.8%Mn 4+ ) phosphors showed that the as-prepared sample was made up of two polyhedrons, [SbO6 ] and [MgO6 ]. Under the excitation of 333 nm, the SLMS:0.8%Mn 4+ phosphors exhibited an intense far-red emission in the 625–800 nm wavelength range with CIE chromaticity coordinates of (0.733, 0.268), which could match well with the absorption spectrum of phytochrome PFR . The optimal concentration of Mn 4+ ions in the SLMS:Mn 4+ phosphors was 0.8 mol%. Importantly, the as-prepared SLMS:0.8%Mn 4+ phosphors had an internal quantum efficiency of 35%. The thermal stability of SLMS:0.8%Mn 4+ phosphors was also investigated, and the activation energy was found to be 0.3 eV. Thus, the Mn 4+ -activated SLMS phosphors have great potential to serve as far-red emitting phosphors in indoor plant growth lighting.