A novel blue-light excitable Pr^(3+)doped(Sr,Ba)LaMgTaO6 phosphor for plant growth lighting  

作　　者：Xiaojiao Kang Wei Lü Zhennan Zhu Chuanyu Jia 

机构地区：[1]School of Electrical Engineering and Intelligentization,Dongguan University of Technology,Dongguan 523808,China

出　　处：《Journal of Rare Earths》2023年第5期666-672,I0002,共8页稀土学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(51772287,61804028)。

摘　　要：In this work,a series of Pr^(3+)ions doped(Sr,Ba)LaMgTaO_(6)phosphors were prepared and applied for plant growth lighting.Under 450 nm excitation,(Sr,Ba)LaMgTaO_(6):Pr^(3+)exhibits intense reddish emission at around 650 nm which is assigned to the3p0→3F2transition of Pr^(3+)ions.The luminescence intensity reaches to the maximum at 2.5 mol%Pr^(3+)doping content both in SrLaMgTaO_(6):Pr^(3+)and BaLaMgTaO_(6):Pr^(3+)systems.Meanwhile,the internal quantum efficiency(IQE)test shows that the IQE of the SrLaMgTaO_(6):0.025Pr^(3+)phosphor is 33.34%upon blue light excitation.The decay curves and temperature-dependent luminescence measurements of the(Sr,Ba)LaMgTaO_(6):Pr^(3+)phosphors were performed and investigated in detail.The red light emitting diodes(LEDs)were packaged using the SrLaMgTaO_(6):Pr^(3+)and BaLaMgTaO_(6):Pr^(3+)phosphors combined with a blue LED chip,which are welloverlapped with the absorption band of photosynthesis.Results indicate that the(Sr,Ba)LaMgTaO_(6):Pr^(3+)can serve as a component of the red light in plant-growth LEDs.

关 键 词：PHOSPHOR Luminescence properties Plant-growth LEDs RAREEARTHS 

分 类 号：TN312.8[电子电信—物理电子学] TQ422[化学工程]