Rare earth intercalated luminescent functional material and preparation method thereof

Abstract

The invention discloses a rare earth intercalated luminescent functional material and a preparation method thereof. The material is composed of silicon-based high molecular resin as a carrier layer and a rare earth luminescent material as a carried layer, the silicon-based high molecular resin and rare earth luminescent material are alternately stacked, and the bottommost and topmost layers are both silicon-based high molecular resin. The preparation method comprises the concrete preparation steps: (1) selecting the silicon-based high molecular resin as the bottommost layer; (2) spraying and stacking the rare earth luminescent material with the maximal emission wavelength on the surface of (1); (3) stacking the silicon-based high molecular resin on the surface of (2); (4) spraying and stacking the rest rare earth luminescent material with the maximal emission wavelength on the surface of (3); (5) stacking the silicon-based high molecular resin on the surface of (4); (6) repeating (4) and (5) until all the rare earth luminescent material and silicon-based high molecular resin are stacked; and (7) baking the material of (6) to complete preparation. The prepared rare earth intercalated luminescent functional material has the advantages of high intensity and high degree of uniformity of emitted light.

Description

technical field [0001] The invention relates to a rare earth intercalation luminescent functional material, and provides a preparation method of the luminescent material, which belongs to the field of luminescent materials. Background technique [0002] White light LED (Light emitting diode) lighting has been widely used in the field of lighting because of its high electro-optical conversion efficiency, safety and reliability, and long service life. It involves lighting, backlight, special lighting and other fields. At present, the process of preparing white LEDs is to mix rare earth luminescent materials with silicone resin, vacuum defoaming, spot coating on the chip surface, and high temperature baking. The rare earth luminescent materials in this process include blue, green, red and other colors. Since the excitation wavelength and emission wavelength of rare earth luminescent materials of each color are different, when several rare earth luminescent materials with diffe...

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Problems solved by technology

At present, the process of preparing white LEDs is to mix rare earth luminescent materials with silicone resin, vacuum defoaming, spot coating on the chip surface, and high temperature baking. The rare earth luminescent materials in this process include blue, green, red and other colors. Since the excitation wavelength and emission wavelength of rare earth luminescent materials of each color are different, when several rare earth luminescent materials with different emission wavelengths are mixed together, it is easy to cause the shorter emission wavelength to be replaced by the larger emission wavelength. Absorbed by the luminescent material, resulting in energy loss and waste of raw materials. At the same time, due to the difference in particle size and crystal form of various rare earth luminescent materials, during the simultaneous luminescent process, different colors emit in different directions, and then the prepared The light color uniformity of white LED lighting decreases, which affects the lighting quality of lighting devices.

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