Preparation method of white fluorescent powder containing europium terbium beryllium polymer

Abstract

The invention relates to a preparation method of white fluorescent powder containing europium terbium beryllium polymer. The method comprises the steps of: firstly, preparing red europium complex, green beryllium complex and blue beryllium complex; and carrying out polymerization reaction in a four-hole boiling flask, and washing, leaching, drying and grinding to prepare the white fluorescent powder containing the europium terbium beryllium polymer. According to the preparation method, the process is advanced, the data is accurate, the light emitting purity of the white fluorescent powder is good, and the luminous efficiency is high; chromaticity coordinates under 365nm of ultraviolet light excitation are that x is 0.3218 and y is 0.3332, and the preparation method is an ideal method for preparing the white fluorescent powder containing the europium terbium beryllium polymer.

Description

technical field [0001] The invention relates to a preparation method of white light fluorescent powder containing europium-terbium-beryllium polymer, which belongs to the technical field of preparation and application of light-emitting materials. Background technique [0002] Due to its small size, energy saving, environmental protection, long service life, and high luminous efficiency, white LEDs have been widely used in the fields of electronics and lighting, so they are called fourth-generation lighting sources. [0003] At present, there are three main ways to realize white light LED: one is to use red, green and blue three primary color chips to combine to emit white light. This method requires four electrodes, three driving voltages, and the structure is more complicated; the other is to use blue light chips to excite yellow light fluorescence. Powder, to obtain white light, this phosphor lacks red light components, low color temperature, and poor color rendering; thir...

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Problems solved by technology

[0003] At present, there are three main ways to realize white light LED: one is to use red, green and blue three primary color chips to combine to emit white light. This method requires four electrodes, three driving voltages, and the structure is more complicated; the other is to use blue light chips to excite yellow light fluorescence. Powder, to obtain white light, this phosphor lacks red light components, low color temperature, and poor color rendering; third, use ultraviolet chips to excite three primary color phosphors to obtain white light, this method is easier to obtain white light with the same color, and the light color can be determined by fluorescence The ratio of the powder is determined, and it has the advantages of high color rendering, light color and color temperature adjustment; although these methods can obtain white light, there are also disadvantages of insufficient material selection and backward preparation methods, resulting in white light LEDs that cannot meet the requirements for use.

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