Mao-lin YANG, Jun-li ZHENG, Li-ping YU, et al. Preparation and Luminescent Properties of Sr2MgAl22O36∶Mn4+ Phosphor-in-glass for Plant Growth LED. [J]. Chinese Journal of Luminescence 42(5):717-723(2021)
DOI:
Mao-lin YANG, Jun-li ZHENG, Li-ping YU, et al. Preparation and Luminescent Properties of Sr2MgAl22O36∶Mn4+ Phosphor-in-glass for Plant Growth LED. [J]. Chinese Journal of Luminescence 42(5):717-723(2021) DOI: 10.37188/CJL.20210022.
Preparation and Luminescent Properties of Sr2MgAl22O36∶Mn4+ Phosphor-in-glass for Plant Growth LED
Sr,2,MgAl,22,O,36,∶Mn,4+,-(SiO,2,-Al,2,O,3,-ZnO-BaO-B,2,O,3,) phosphor in glass(SMA∶Mn,4+,-PiG) was prepared by a two-step co-sintering technology at low temperature. The phase, composition and luminescent properties of PiG samples were investigated by X-ray diffraction(XRD), scanning electron microscope(SEM), excitation and photoluminescence spectra, fluorescence decay curve,etc,. Experimental results show that the phase and elemental composition of SMA∶Mn,4+, phosphor were well preserved after forming PiG. Under 328 nm excitation, PiG samples with different SAM∶Mn,4+, content all showed strong emission band peaked at 661 nm due to,2,E→,4,A,2, transition of Mn,4+, ions. The emission spectrum of SMA∶Mn,4+,-PiG well matches absorption spectra of plant phytochromes. With the increase of phosphor content, the photoluminescence intensity of SAM∶Mn,4+,-PiG gradually increases. Internal quantum efficiency(IQE) and external quantum efficiency(EQE) of 15% SMA∶Mn,4+,-PiG samples are 26% and 20%, respectively, which are lower than 59% and 40% of SMA∶Mn,4+, phosphor. Compared with SMA∶Mn,4+, phosphor, absorption efficiency and thermal stability of SAM∶Mn,4+,-PiG are slightly enhanced. With packaging with high-power UV chip, SMA∶Mn,4+,-PiG red LED device exhibits high electroluminescence intensity, and the highest value is measured at 100 mA.
关键词
荧光玻璃植物生长Mn4+发光二极管
Keywords
phosphor-in-glassplant growthMn4+LED
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Related Institution
College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China);* ZHOU Wen-li, E-mail: chemwlzhou@hunnu.edu
School of Materials Science and Engineering, Zhengzhou University(Luoyang Campus)
Key Laboratory of Advanced Energy Catalytic and Functional Material Preparation of Zhengzhou City, School of Materials;Science and Engineering, Zhengzhou University
School of Chemistry, Chemical and Environmental Engineering, Weifang University
School of Applied Science, Taiyuan University of Science and Technology