A kind of carbon-nitrogen powder yellow fluorescent material and preparation method thereof

Abstract

The invention belongs to the technical field of fluorescent materials, and discloses a carbon-nitrogen powder yellow fluorescent material and a preparation method. Add 20 grams of analytically pure melamine into a 50 ml stainless steel high-temperature reaction kettle, seal it, and heat it in a constant temperature box at a temperature of 450 °C. degree, the time is 24 hours; after the reaction is completed, the temperature is naturally lowered, poured into a beaker to obtain a yellow-light sintered product; use a ball mill to grind the yellow-light sintered product into powder, add absolute ethanol to the beaker and stir, filter and dry , a yellow powder can be obtained; transfer to a sample bottle and set aside. The invention effectively solves the problems in the prior art that the fluorescent powder contains rare metal elements, and the rare metal is non-renewable, non-renewable, highly toxic, and pollutes the environment in mining, smelting, fluorescent powder production and transportation. The fluorescent material provided by the invention is a carbon nitrogen material, does not contain metal, does not cause pollution to the ring, has abundant raw materials, and has relatively high quantum yield.

Description

technical field [0001] The invention belongs to the technical field of fluorescent materials, and in particular relates to a carbon-nitrogen powder yellow fluorescent material and a preparation method thereof. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Fluorescent material is calcined by metal (zinc, chromium) sulfide or rare earth oxide and trace active agent. Colorless or light white, under the irradiation of ultraviolet light (200-400nm), according to the different types and contents of metals and activators in the pigment, it presents various colors of visible light (400-800nm). [0004] Commercial white light diodes usually use blue light diodes to excite yellow phosphors to form white light. The most commonly used yellow phosphors are cerium-doped yttrium aluminum garnet Y3Al5O2:Ce3+ (“YAG:Ce”), which contains heavy metals and is relatively toxic. Mining mining, smelting, fluorescent powd...

AI Technical Summary

Problems solved by technology

[0006] (1) Phosphor powders in the prior art contain rare metal elements, and rare metals are non-renewable, non-renewable, and highly toxic, and cause relatively large pollution to the environment in mining, smelting, phosphor production and transportation;

[0007] (2) The refining process in the prior art requires a high-temperature environment, and the production cost is relatively high

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