Up converting fluorescent material with nanometer level molybdate substrate and its prepn

A fluorescent material and nano-level technology, applied in the field of nano fluorescent materials, can solve the problems of difficulty in preparing materials, no preparation, etc., and achieve the effects of cheap raw materials, low cost and simple process
CN1347958AInactive Publication Date: 2002-05-08CAPITALBIO CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CAPITALBIO CORP
Publication Date
2002-05-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention belongs to the field of nano fluorescent material. Lanthanum oxide (or yttrium or gadolinium oxide), ytterbium oxide and erbiom oxide (or thulium or holmium oxide) are first dissolved in acid to prepare solution; complexone and sodium or potassium molybdenate are added into the solution to produce precipitate, which is centrifugally separated and water washed to prepare aqueous gel, aqueous gel or further prepared alcoholic gel is finally cinerated in a high temperature furnace or heated in a hydrothermal reactor to obtain the nano level up converting fluorescent material. The said material has lanthanum molybdenate as matrix and ytterbium molybdenate and erbium molybdenate as dopant. The material thus prepared has small and homogeneous size, average size 50-60 nm and high light glowing strength and may meet the requirement as biological molecular fluorescent mark material.
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Description

Technical field:

[0001] The invention belongs to the technical field of nano fluorescent materials, in particular to a rare earth ion-doped nano up-conversion fluorescent material with molybdate as a matrix and a preparation method thereof. Background technique:

[0002] Up-conversion fluorescent material is a kind of luminescent material that can emit visible light under the excitation of infrared light. Molybdate co-doped with ytterbium and erbium is a relatively high-efficiency up-conversion fluorescent material, which is usually made of molybdenum oxide (MoO 3 ), ytterbium oxide (Yb 2 o 3 ), erbium oxide (Er 2 o 3 ) and so on are mixed evenly, and burned by high-temperature solid-phase reaction at a high temperature of 1200°C. This type of material emits red fluorescence under 970nm infrared excitation (Yu Xianen, Practical Luminescent Materials and Photoluminescence Mechanism, China Light Industry Press, 1997, Beijing).

[0003] Due to their special properties, up...

Claims

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