| 简介 |
The present invention belongs to the field of luminous materials technology, in particular relates to near-infrared fluorescent powders, and further disclosed the preparation method and the luminous device containing the fluorescent powder. The near-infrared fluorescent powder of the present invention comprises an inorganic compound having a composition form of AxRpOr, wherein the compound has anAxRpOr structure as a substrate, and through mixing specified rare earth ions or transition metal ions, the excitation peak of the fluorescent powder prepared is located at 350 to 750 nm, and embodies wide emission under the incitation of ultraviolet light, Blu-ray or red light, The emission main peak is located from 700 to 1600nm. Establishing a solid solution through a method such as ion substitution, and due to the influence of crystal electric field division, it is possible to prepare a near-infrared fluorescent powder material of different emission wavelengths, and not only improved the luminous intensity of the fluorescent powder, but also realized the adjustable controllability of the spectrum, and further expanded the application range. |
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