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Light conversion film, preparation method thereof and application on plant growth lamp

The technology of a plant growth lamp and a light conversion film is applied to the light conversion film and its preparation and application in the plant growth lamp, which can solve the problem of uneven light output of the plant growth lamp, short service life of the LED plant growth lamp, and inability to achieve plant growth. Spectral precision control and other issues

Inactive Publication Date: 2018-04-03
NANO & ADVANCED MATERIALS INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem solved by the present invention is to overcome the uneven light output of the existing plant growth lamps, the inability to realize the precise control of the spectrum of different growth stages of plants, the complicated structure design and operation, and the high energy consumption of broadband HID or fluorescent tube plant growth lamps. Due to the short service life of QD or fluorescent powder LED plant growth lamps, a light conversion film (light emitting film, LEF) and its preparation method and application on plant growth lamps are provided.

Method used

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  • Light conversion film, preparation method thereof and application on plant growth lamp
  • Light conversion film, preparation method thereof and application on plant growth lamp
  • Light conversion film, preparation method thereof and application on plant growth lamp

Examples

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Embodiment 1

[0082] A light conversion film, comprising a light conversion material and a polymer film as a carrier, wherein the light conversion material is a composite of quantum dots and inorganic phosphors, and the polymer film is made of 184 silicone resin prepared.

[0083] The preparation method of this photoconverting film is as follows: 3ml CdSe / CdS red quantum dot solution (dissolved in chloroform, 10mg / mL) and 1g red inorganic fluorescent powder are mixed uniformly, and the gained mixed solution is mixed with 10g 184 silicone resin mixed to form a light-emitting composite, and then coated on the PET substrate, thermal curing (80 ° C, 5 minutes) to obtain.

Embodiment 2

[0085] A light conversion film comprises a light conversion material, a polymer film as a carrier, and two upper and lower protective isolation films. Wherein, the light conversion material is a composite quantum dot, and the polymer is a UV-curable glue with a refractive index of 1.48.

[0086] The preparation method of the light conversion film is as follows: 0.89ml GA_InP / ZnS green quantum dot solution (dissolved in chloroform, 10mg / mL) and 0.1189ml CdSe / CdS red quantum dot solution (dissolved in chloroform, 10mg / mL) were mixed uniformly; Mix the obtained quantum dot solution with 2g of UV-curable glue to form a light-emitting composite, and then coat it on a PET protective isolation film, form it by pressing, and UV-cure to obtain it;

Embodiment 3

[0088] A light conversion film comprises a light conversion material, a polymer nanofiber mat as a carrier, and two upper and lower protective isolation films. Among them, the light conversion material is composite quantum dots, the polymer nanofiber mat is polyvinylidene fluoride, and the refractive index is 1.42.

[0089] The preparation method of the light conversion film is as follows: mix 0.89ml GA_InP / ZnS green quantum dot solution (dissolved in chloroform, 10mg / mL) and 0.1189g CdSe / CdS red quantum dot solution (dissolved in chloroform, 10mg / mL); Coat, spray, or dip-coat the obtained quantum dot solution on a 20×40mm polyvinylidene fluoride nanofiber mat, and then dry it at low temperature (40°C, 15min); seal the nanofiber light-emitting layer on the PP protection layer with a thermosetting sealant. between the isolation membranes.

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Abstract

The invention discloses a light conversion film, a preparation method thereof and an application on a plant growth lamp. The light conversion film includes a light conversion material and a polymer carrier, wherein the light conversion material is quantum dots and / or inorganic fluorescent powder; the polymer carrier includes a polymer nanofiber pad or a polymer film, and the polymer material has arefractive index of 1.45 or more; and the weight of the light conversion material is 0.3% to 11% of the weight of the polymer carrier. The preparation method comprises the steps: mixing the light conversion material and the polymer to form a light emitting composite, then coating or moulding on a substrate, then performing heat curing or UV curing, or coating, spraying, or dipping the light conversion material on the polymer nanofiber pad, and then drying at low temperatures. The light conversion film of the invention can emit light in the same spectrum, can enhance light uniformity, can increase plant growth efficiency, and can be replaced at different time periods according to the plant growth cycle, thus satisfying the spectral color requirements of plants of different varieties and growth stages.

Description

technical field [0001] The invention relates to a light conversion film, a preparation method thereof and an application in a plant growth lamp. Background technique [0002] Grow lights are an artificial light source designed to stimulate plant growth by emitting an electromagnetic spectrum (400-700nm) suitable for photosynthesis. Photosynthesis is a process by which plants convert solar energy, in which chlorophyll in leaves absorbs sunlight to provide all the energy needed by plants. [0003] The color of phytochrome determines the selective absorption of different wavelengths by plants. The most common plant pigments are chlorophyll, carotenoids, anthocyanins, etc. During photosynthesis, the dominant plant absorption peaks are the blue and red parts of visible light. The main pigments of plant photosynthesis are chlorophyll and carotenoids, which absorb blue and red light; anthocyanin is another important pigment that determines the color of plants, mainly absorbing g...

Claims

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Application Information

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IPC IPC(8): F21V9/40A01G7/04F21Y115/10
CPCF21Y2115/10Y02P60/14
Inventor 刘晨敏郭志豪涂宁杜沛昕许美美周沛强刘家裕
Owner NANO & ADVANCED MATERIALS INST
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