A kind of tetravalent manganese ion-doped barium fluoroscandate red light material and preparation method thereof

A barium fluoroscandate and ion doping technology, which is applied in the direction of luminescent materials, preparation/processing of rare earth metal compounds, chemical instruments and methods, etc., can solve the problem of energy-consuming synthesis equipment, which has high requirements and is unfavorable for large-scale industrial production and other issues, to achieve the effect of low cost, simple ingredients, and significant production advantages
CN109179481BActive Publication Date: 2020-09-01WENZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WENZHOU UNIV
Publication Date
2020-09-01

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Abstract

The invention discloses a tetravalent manganese ion-doped barium fluoroscandate red light material and a preparation method thereof. The material is Ba 3 sc 2 f 12 as matrix, with Mn 4+ As an activator, the chemical composition is Ba 3 sc 2 f 12 :Mn 4+ . The preparation method is as follows: with Sc 2 o 3 Scandium source, Ba(NO 3 ) 2 as barium source, with K 2 MnF 6 In order to activate ion manganese source, HF aqueous solution is used as medium and fluorinating agent. During preparation, the Sc 2 o 3 The solid was placed in a container, and then HF aqueous solution, Ba(NO 3 ) 2 and K 2 MnF 6 , react at room temperature to 180 degrees for 1 to 12 hours, filter with suction, and dry naturally to obtain the product. The material may be applied to dichroic white LEDs to improve the color rendering index of white LEDs. The product does not contain rare earth, has a simple preparation method, does not need high-temperature sintering, and is suitable for industrial production.
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Description

technical field

[0001] The present invention relates to luminescent materials, in particular to a red light material that can be used for white light LEDs; in particular, it relates to a barium fluoroscandate doped with tetravalent manganese ions whose excitation wavelength is in the blue light region and emission wavelength is in the red light region. Materials and their preparation methods. Background technique

[0002] Compared with traditional light sources, semiconductor white light LEDs are increasingly favored by people because of their excellent characteristics, such as energy saving, light adjustment, vibration resistance, not easy to damage, instant start, no flicker frequency, and long service life. The leading white LED product in the market is a yellow-blue two-color white LED packaged by yellow phosphor YAG:Ce and blue LED. In this LED structure, the electro-induced blue light (450-470nm) of the GaN chip excites the phosphor YAG: Ce produces 550nm yellow light...

Claims

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