Optical properties of the CaEuAl3O7 phosphor with dual‐activator Eu2+/Eu3+ for multifunctional applications,Journal of the American Ceramic Society

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Optical properties of the CaEuAl3O7 phosphor with dual‐activator Eu2+/Eu3+ for multifunctional applications
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-06-03 , DOI: 10.1111/jace.17289
Yang Xu ₁ , Zhen Sun ₁ , Yanling Wei ₂ , Mochen Jia ₁ , Bofei Hou ₁ , Xin Li ₁ , Fang Lin ₁ , Mingxuan Zhang ₁ , Huayao Wang ₁ , Zuoling Fu ₁

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At present, most blue‐red composite LED light sources are widely used in the field of plant lighting. However, their full‐width at half‐maximum of blue light is too small to meet the requirements of plants for photosynthesis. Herein, a dual‐emitting single‐phase self‐luminescent phosphor CaEuAl₃O₇ (CEAO) is reported in this study, which provides broadband blue emission of Eu²⁺ ions and red emissions of Eu³⁺ ions. According to the optical properties of Eu²⁺ and Eu³⁺ ions in the CEAO phosphor, it can be found that all emissions are consistent with the absorption of chlorophylls and pigment carotenoids. In addition, the temperature sensing based on the fluorescence intensity ratio (FIR) in the CEAO phosphor is also studied and the maximum sensitivity (S ) can reach as high as 6.90% K⁻¹ at 313 K. The results indicate that the single‐component phosphor CEAO with blue and red double‐color emission possesses an outstanding potential in plant growth lamps and optical thermometry applications.

中文翻译：

具有双活化剂Eu2 + / Eu3 +的CaEuAl3O7荧光粉的光学特性，可用于多功能应用

目前，大多数蓝红色复合LED光源已广泛用于植物照明领域。但是，它们的蓝光最大一半时的全角太小，无法满足植物进行光合作用的要求。在本文中，双发射单相自发光荧光体CaEuAl ₃ ö ₇（CEAO）报道在这项研究中，其提供的Eu的宽带蓝色发射²⁺离子及Eu的红色排放³⁺离子。根据Eu ²⁺和Eu ³⁺的光学性质在CEAO荧光粉中的离子中，可以发现所有排放都与叶绿素和色素类胡萝卜素的吸收一致。此外，还研究了基于CEAO荧光粉中荧光强度比（FIR）的温度感测，并且在313 K时，最大灵敏度（S）可以高达6.90％K ^-1。具有蓝色和红色双色发射的组分磷光体CEAO在植物生长灯和光学测温应用中具有巨大的潜力。

更新日期：2020-08-10

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