A long-life quantum dot fluorescent composite film for LED plant growth lamps and its preparation method

Abstract

The invention discloses a long-service-life quantum dot fluorescent composite film for an LED plant growth lamp and a preparation method thereof. The quantum dot fluorescent composite film comprises a quantum dot layer, protection base material layers and protection adhesive layers, wherein the upper surface and the lower surface of the quantum dot layer are covered by the protection base material layers, and four side surfaces of the quantum dot layer are covered by the protection adhesive layers. The LED plant growth lamp, which is equipped with a blue-light, purple-light or ultraviolet-light LEDto act as a light source, provided with the quantum dot fluorescent composite film can emit mixed light of red light and blue light. The wavelength, the half-peak width and the relative strength of the red light and the blue light emitted by the plant growth lamp can be changed through adjusting the type, the concentration and the dosage of quantum dots in the fluorescent composite film, thereby achieving requirements which are the most appropriate for plant growth.

Description

technical field [0001] The invention relates to a quantum dot fluorescent composite film used for LED plant growth lamps and a preparation method thereof. The LED lamp installed with the quantum dot fluorescent composite film can be used for plant supplementary light. Background technique [0002] Plants need sunlight for photosynthesis. Plants can perform photosynthesis for 16 hours a day, but the time of natural light is very limited, making the plants grow slowly. In order to strengthen the photosynthesis of plants and promote their growth, high-power lamps (called plant growth lamps) are widely used at present to irradiate the crops grown indoors or in greenhouses on cloudy and rainy days, and replace sunlight with lights to provide light for plant growth. Provide a favorable environment for development. [0003] In sunlight, the most important wavelength bands for plant growth are blue light and red light. Blue light can promote plant growth, while red light is cond...

AI Technical Summary

Problems solved by technology

[0004] The LED plant growth lights of the prior art use both red and blue LED beads as light sources. The ratio of the number of red and blue LED beads is usually 5:1 to 10:1, and the number of red and blue beads The difference is large, resulting in uneven light output from the lamp

Images