Synthesis and Photoluminescence Properties of Double Perovskite Phosphor Ba6Y2W3O18: Mg2+, Mn4+ for Plant Cultivation. (18th September 2019)

• Record Type: Journal Article
• Authors: Zhou, Faguang; Qiu, Fangyuan; Wang, Chuang; Xin, Shuangyu; Gao, Miao; Li, Zhuowei; Zhu, Ge
• Is Part Of: ECS journal of solid state science and technology. Volume 8:Number 10(2019)
• Page Start: R119
• Page End: R126
• Publication Date: 2019-09-18
• Subjects: Luminescence; Solid state chemistry -- Periodicals; Electronics -- Materials -- Periodicals; Electrochemistry -- Periodicals; 541.0421
• DOI: 10.1149/2.0031910jss
• Languages: English
• ISSNs: 2162-8777

Abstract

Abstract : A novel far-red emission phosphor Ba6 Y2 W3 O18 : Mg 2+, Mn 4+ is firstly synthesized through high temperature solid reaction and its luminescence properties are investigated. The results show that Mn 4+ doped Ba6 Y2 W3 O18 phosphors have intense absorption in both ultraviolet and blue region, and can exhibit efficient far-red emission centered at 692 nm, which has large overlapping with the characteristic absorption bands of photosensitive pigments PFR . The optimum Mn 4+ doping content, internal quantum efficiency, the content and temperature dependent luminescence behavior are discussed. The effects of "Mn-Mn" bond and crystal field strength on the luminescent property of Mn 4+ are discussed in detail. Moreover, it is impressive that the co-doping of Mg 2+ can significantly improve the emission intensity of Mn 4+ and the related mechanisms are studied systematically. Finally, a red light emitting diode is fabricated based on Ba6 Y2 W3 O18 : Mn 4+, Mg 2+ phosphor and a 365 nm light emitting diode chip. The results indicate Ba6 Y2 W3 O18 : Mn 4+, Mg 2+ phosphor can be used as a potential spectral converter for plant growing.