Tuning the luminescence properties of Mn4+‐activated CaYAlO4 phosphor by co‐doping cations for indoor plant cultivation,Journal of the American Ceramic Society

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Tuning the luminescence properties of Mn4+‐activated CaYAlO4 phosphor by co‐doping cations for indoor plant cultivation
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-03-16 , DOI: 10.1111/jace.17111
Yongli Zhang _{1,

2} , Yuding Huang ₃ , Minghui Li ₁ , Chao Liang ₄ , Haifeng Zhu ₁ , Yuan Zhong _{1,

2} , Nan Yang ₅ , Zhi Zhou _{1,

2} , Mao Xia _{1,

2,

4}

Affiliation

To fulfil the demands of high‐power plant growth lamps, cation co‐doping is an effective way to tune the photoluminescence properties of manganese (Ⅳ)‐activated aluminate phosphors. Therefore, we managed to synthesize a series of cations co‐doped CaYAlO₄:x Mn⁴⁺, m Sr²⁺, M⁺ (M⁺ = Li⁺, Na⁺, and K⁺) (CYAO:Mn, Sr, M) far‐red‐emitting phosphors. The excitation spectrum of these phosphors contained two excitation bands, and the opposite effects of these two bands on the luminescence intensity have been observed with the increase of Mn⁴⁺ concentration. By adding 0.1 mol Sr²⁺ ions to replace Ca²⁺ site, the emission intensity and thermal stability of CYAO:Mn phosphors can be enhanced. Furthermore, the luminescence properties of CSYAO:Mn can be further improved by co‐doping monovalent alkali metal ions to serve as charge compensators, the increased number of Mn⁴⁺ luminescence centers. Moreover, 0.6 mol% Na⁺ can increase the initial emission intensity of the phosphors by 117% as the best ratio. The characteristic emission spectrum of the phosphors CYAO:Mn,Sr,M correspond to the phytochrome P_FR of plants. These experiments and characterization results have certified that these phosphors have a potential application in indoor plants cultivation.

中文翻译：

通过共掺杂阳离子来调节Mn4 +激活的CaYAlO4荧光粉的发光特性，用于室内植物培养

为了满足大功率植物生长灯的需求，阳离子共掺杂是调节锰（Ⅳ）活化的铝酸盐荧光粉的光致发光性能的有效方法。因此，我们设法合成了一系列共掺杂的CaYAlO ₄阳离子：x Mn ⁴⁺，m Sr 2 ⁺，M ⁺（M ⁺ = Li ⁺，Na ⁺和K ⁺）（CYAO：Mn，Sr，M ）发出远红光的荧光粉。这些荧光粉的激发光谱包含两个激发带，并且随着Mn ⁴⁺的增加，观察到这两个带对发光强度的相反影响。浓度。通过添加0.1 mol Sr ²⁺离子代替Ca ²⁺位点，可以增强CYAO：Mn荧光粉的发光强度和热稳定性。此外，可以通过共掺杂一价碱金属离子作为电荷补偿剂，增加Mn ⁴⁺发光中心的数量来进一步改善CSYAO：Mn的发光性能。此外，0.6mol％的Na ⁺作为最佳比例可以使磷光体的初始发射强度提高117％。磷光体CYAO：Mn，Sr，M的特征发射光谱对应于植物的植物色素P _FR。这些实验和表征结果证明，这些荧光粉在室内植物栽培中具有潜在的应用。

更新日期：2020-03-16

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