a bi 3+ Doped ultraviolet long-lasting luminescent material and its preparation method and application

Abstract

The present invention discloses one kind of Bi 3+ Doped ultraviolet long afterglow luminescent material and preparation method and application thereof, the Bi 3+ The molecular formula of the doped ultraviolet long afterglow luminescent material is Mg 2‑x Bi x GeO 4 , where 0<x≤0.03. The present invention is based on Mg 2 Fe. 4 As a matrix, by doping trivalent bismuth ions prepared to obtain a luminescent material, the material exhibits a strong ultraviolet long afterglow luminescence, its emission wavelength peak is located at 350nm, luminescence duration of up to 13h, the material can be applied to photocatalysis and light storage and other fields.

Description

a Bi 3+ Doped ultraviolet long afterglow luminescent material, preparation method and application thereof technical field The present invention relates to the technical field of inorganic light-emitting materials, more particularly, to a kind of Bi 3+ Doped UV long afterglow hair Optical material, preparation method and application thereof. Background technique Long afterglow luminescent material refers to the energy that can store external light irradiation under the illumination of a certain light source, and then in a certain light source. At temperature, it is slowly released in the form of light and is a photoluminescent material that stores energy. So far, located in the visible Most of the long afterglow luminescent materials in various bands in the light and near-infrared regions have been developed, such as blue long afterglow luminescent materials. CaAl 2 O 4 : Eu 2+ , Nd 3+ , red long afterglow luminescent material Y 2 O 2 ...

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Problems solved by technology

Compared with the great success of visible light and near-infrared light long-lasting luminescent materials, the research on ultraviolet long-lasting luminescent materials is still less, but due to the long-lasting luminescent materials with emission wavelengths in the ultraviolet region Fields such as disinfection and anti-counterfeiting have broad application prospects. Therefore, the development of ultraviolet long-lasting luminescent materials has attracted more and more attention from researchers. However, the substrates of existing ultraviolet long-lasting luminescent materials are mostly bimetallic systems, such as the prior art Open LiScGeO 4 : Bi 3+ (Zhou Z, Xiong P, H Liu, et al. Ultraviolet-A Persistent Luminescence of a Bi 3+ -Activated LiScGeO 4 Material [J]. Inorganic Chemistry, 2020.), LiYGeO 4 : Bi 3+ and NaYGeO 4 : Bi 3+ etc., while there are still few UV long-lasting luminescent materials whose substrate is a single metal system

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