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Optical properties of the CaEuAl 3 O 7 phosphor with dual‐activator Eu 2+ /Eu 3+ for multifunctional applications
Author(s) -
Xu Yang,
Sun Zhen,
Wei Yanling,
Jia Mochen,
Hou Bofei,
Li Xin,
Lin Fang,
Zhang Mingxuan,
Wang Huayao,
Fu Zuoling
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17289
Subject(s) - phosphor , ion , luminescence , absorption (acoustics) , fluorescence , materials science , analytical chemistry (journal) , blue light , optoelectronics , activator (genetics) , chemistry , optics , physics , chromatography , gene , organic chemistry , composite material , biochemistry
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 CaEuAl 3 O 7 (CEAO) is reported in this study, which provides broadband blue emission of Eu 2+ ions and red emissions of Eu 3+ ions. According to the optical properties of Eu 2+ and Eu 3+ 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.