Improved luminescence and energy-transfer properties of Ca14Al10Zn6O35:Ti4+,Mn4+ deep-red-emitting phosphors with high brightness for light-emitting diode (LED) plant-growth lighting
Improved luminescence and energy-transfer properties of Ca14Al10Zn6O35:Ti4+,Mn4+ deep-red-emitting phosphors with high brightness for light-emitting diode (LED) plant-growth lighting
复制标题
改善用于发光二极管 (LED) 植物生长照明的高亮度 Ca14Al10Zn6O35:Ti4,Mn4 深红光荧光粉的发光和能量传输特性
DOI：
10.1039/c8dt02991a
复制
发表时间：
2018
影响因子：
4
通讯作者：
H. T. Bert Hintzen
中科院分区：
文献类型：
--
作者：
Zhi Zhou;Yiran Li;Mao Xia;Yuan Zhong;Nan Zhou;H. T. Bert Hintzen
采用传统的固相反应方法，在Ca 14 Al 10 Zn 6 O35基质中共掺杂Ti4+和Mn 4+，制备了新型的植物生长照明用深红色荧光粉。标称Ca 14 −（x+y）/2Al 10 −x− yZn 6 O35：xTi 4+，yMn 4+（CAZO：Ti4+，Mn 4+）磷光体可以有效地用作近紫外（NUV）和蓝光发射二极管（LED）芯片，并表现出从650 nm到750 nm的强深红色发射带，这应该是[MnO 6]8−八面体内部的2 E → 4A 2.跃迁的结果。excited.by在270 nm激发下，发现了从Ti ~（4+）到Mn ~（4+）的多重能量转移，证实了Ti ~（4+）和Mn ~（4+）是偶极-偶极相互作用的结果。以制备的Ca 13. 825 Al 9. 65 Zn 6 O35：0. 15 Mn 4+，0. 2 Ti4+，0. 005 H3 BO 3（CAZO：Mn 4+，Ti4+，H3 BO 3）为发光材料，采用460 nm蓝光芯片作为泵浦源，制备了LED植物生长灯，可用于多肉植物的栽培。结合该荧光粉优良的热稳定性和高的量子效率（QE），表明该荧光粉有望成为LED植物照明的候选深红色发光材料。
For plant-growth lighting, novel deep-red emission phosphors with high brightness were obtained by codoping.Ti4+ and Mn4+ into a Ca14Al10Zn6O35 substrate through a conventional solid-state reaction strategy..The nominal Ca14−(x+y)/2Al10−x−yZn6O35:xTi4+,yMn4+ (CAZO:Ti4+,Mn4+) phosphors could be excited.by both near-ultraviolet (NUV) and blue-light-emitting diode (LED) chips efficiently and exhibited a strong.deep-red emission band ranging from 650 nm to 750 nm, which should be the result of the 2E → 4A2.transition inside the [MnO6]8− octahedral. Multiple energy transfer from Ti4+ to Mn4+ was detected in this.CAZO; whereby Ti4+ and Mn4+ phosphors were verified to be a result of the dipole–dipole interaction.under excitation at 270 nm. LED plant-growth lights were fabricated using the as-prepared nominal.Ca13.825Al9.65Zn6O35:0.15Mn4+,0.2Ti4+,0.005H3BO3 (CAZO:Mn4+,Ti4+,H3BO3) phosphors pumped by a.460 nm blue-chip; this luminaire could be used to greatly promote the cultivation of succulent plants..Combined with the attractive thermal stability as well as high quantum efficiency (QE) of this phosphor, it.was demonstrated that these novel phosphors may be candidate deep-red luminescent materials for LED.plant lighting.