Enhancing photoluminescence properties of Mn4+‐activated Sr4−xBaxAl14O25 red phosphors for plant cultivation LEDs
Enhancing photoluminescence properties of Mn4+‐activated Sr4−xBaxAl14O25 red phosphors for plant cultivation LEDs
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增强用于植物栽培 LED 的 Mn4 - 活化 Sr4 - xBaxAl14O25 红色荧光粉的光致发光性能
DOI：
10.1111/jace.16633
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发表时间：
2019
影响因子：
3.9
通讯作者：
Zhi Zhou
中科院分区：
文献类型：
--
作者：
Xianbo Wu;Yimei Yang;Shujie Gai;Longhai Liu;Minghui Li;Yuan Zhong;Mao Xia;Nan Zhou;Zhi Zhou
非稀土锰激活铝酸锶荧光粉具有价格低廉、环境友好、无毒、光谱范围适宜等优点，被认为是一种很有前途的植物栽培材料。本文采用高温固相法合成了Sr 4-xAl13.99O25：0.01Mn4+，1.4H3BO3铝酸锶荧光粉。synthesized.by在600 ~ 750 nm范围内，其光致发光谱位于655 nm处的红光区，在紫外光（~346 nm）或蓝光（~450 nm）的激发下可被激发。在655 nm处的形状发射带归因于2 Eg-4A 2g的跃迁。此外，还详细研究了Ba ~（2+）掺杂浓度对Sr_4Al_（13.99）O_（25）：0.01Mn ~（4+），1.4H_3BO_3发光强度的影响，当Ba ~（2+）掺杂浓度为0.1mol·L ~（-1）时，发光强度比Sr_4Al_（13.99）O_（25）：0.01Mn ~（4+），1.4H_3BO_3发光强度提高了140.9%。此外，还系统地研究了X射线衍射光谱、元素分布、组成修饰、光学性质、FT-IR光谱、漫反射光谱、热稳定性和荧光寿命。根据封装后LED的电致发光光谱，表明Sr3.9Ba0.1Al13.99O25：0.01Mn4+，1.4H3BO3荧光粉的发光光谱与植物色素光谱相匹配，是一种很好的植物栽培LED候选材料。
Non–rare earth Mn4+‐activated strontium aluminate phosphor is considered to be a.promising material for plant cultivation field owing to their advantage of inexpensively,.environment friendly, nontoxic, and appropriate spectral range. In this paper,.a Sr4−xBaxAl13.99O25:0.01Mn4+,1.4H3BO3 strontium aluminate phosphor is synthesized.by a convenient high‐temperature solid‐state reaction. The photoluminescence.spectra located at red region with a peak at 655 nm in the range of 600 to 750 nm that.can be excited under the excitation of ultraviolet (~346 nm) or blue light (~450 nm)..The shape emission band at 655 nm is attributed to the transition of 2Eg‐4A2g..Furthermore, the emission intensity of Sr4−xBaxAl13.99O25: 0.01Mn4+,1.4H3BO3.phosphor is conducted in detail with the variety of Ba2+ doping concentration and.the intensity can be enhanced to 140.9% than the Sr4Al13.99O25:0.01Mn4+,1.4H3BO3.when the value of Ba2+ concentration equal to 0.1 mol. In addition, the X‐ray diffraction.spectra, element mapping, composition modifying, optical properties, FT‐IR.spectra, diffuse reflectance spectra, thermal stability, and fluorescence lifetime are.systematically investigated. According to the electro‐luminescent spectra of as‐packaged.LED, indicating that the Sr3.9Ba0.1Al13.99O25:0.01Mn4+,1.4H3BO3 phosphor.will become a great candidate for plant cultivation LEDs due to the emission spectra.match well the plant pigment spectrum.