Deep-red-emitting Mg2InSbO6:Mn4+ phosphors with a double-perovskite structure for plant-cultivation LEDs: Synthesis and photoluminescence properties. Issue 13 (1st July 2021)

• Record Type: Journal Article
• Authors: Liu, Yuanyuan; Gao, Jing; Shi, Wen; Feng, Xuyao; Zhou, Zijing; Wang, Jianxu; Guo, Junlan; Kang, Ruyi; Deng, Bin; Yu, Ruijin
• Is Part Of: Ceramics international. Volume 47:Issue 13(2021)
• Page Start: 18814
• Page End: 18823
• Publication Date: 2021-07-01
• Subjects: Antimonate -- Luminescence -- Mg2InSbO6 -- Phosphors -- Plant-cultivation; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.03.217
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: In this study, novel deep-red-emitting Mg2 InSbO6 :Mn 4+ phosphors were prepared through a high-temperature solid-state reaction. The as-prepared phosphors belong to the perovskite structure with the space group of R 3 ‾ (No.148). The calculated energy gap value of Mg2 InSbO6 is ~1.788 eV. Emission spectrum of the Mg2 InSbO6 :0.3%Mn 4+ was obtained under 301 nm excitation, which centered 665 nm due to the 2 Eg → 4 A2g transition. The optimum concentration of Mg2 InSbO6 : x Mn 4+ is confirmed to 0.3% mol, and the concentration quenching effect is ascribed to the dipole–dipole interaction. The relative temperature-dependent PL spectra demonstrate that phosphors possess commendable repeatability and high activation energy. The chromaticity shift diagram shows the phosphors have good resistance of color drifting. The Mg2 InSbO6 :0.3%Mn 4+ phosphor has a high color purity of 99.8%. Furthermore, a red light-emitting diode is fabricated with Mg2 InSbO6 :0.3%Mn 4+ phosphor and a 365 nm near-ultraviolet chip. The emission spectrum of the red LED is perfectly overlapped with plant pigments (chlorophyll a and chlorophyll b ) absorption spectrum. Thus, Mn 4+ -activated Mg2 InSbO6 :Mn 4+ phosphors have the potential to apply in plant-cultivation LEDs.