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A kind of infrared reflective device and its preparation method

An infrared reflection and device technology, applied in instruments, static indicators, nonlinear optics, etc., can solve problems such as high cost, achieve low energy consumption, reduce threshold voltage, and regulate infrared light.

Active Publication Date: 2021-12-07
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these devices block visible light as well as infrared light and are expensive

Method used

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  • A kind of infrared reflective device and its preparation method
  • A kind of infrared reflective device and its preparation method
  • A kind of infrared reflective device and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take the first light-transmitting conductive substrate and the second light-transmitting conductive substrate. Under the yellow light environment, weigh the semiconductor material polyvinylcarbazole (PVK) and dissolve it in the chlorobenzene solution, configure it into a 4% solution, stir at room temperature until it is completely dissolved, and then spin-coat it on a surface of the first light-transmitting conductive substrate Prepare the semiconductor material layer, control the film thickness to 75nm by controlling the rotation speed and time of spin coating, and then rub the parallel orientation. Weigh polyvinyl alcohol (PVA) and dissolve it in deionized water, configure it into a 5% solution, stir at 60°C until it is completely dissolved, and then spin-coat it on one surface of the second light-transmitting conductive substrate to prepare an alignment layer material layer. By controlling the spin The coating speed and time are used to control the film thickness to ...

Embodiment 2

[0044] This example is basically the same as Example 1, except that the liquid crystal mixture includes 82.84 parts by mass of negative liquid crystal HNG30400-200, 5 parts by mass of polymerizable liquid crystal monomer HCM009, and 11.16 parts by mass of a left-handed chiral dopant S811, 1 part by mass of photoinitiator Irgacure-369.

Embodiment 3

[0046] This example is basically the same as Example 1, except that the liquid crystal mixture includes 80 parts by mass of negative liquid crystal MLC-2019, 5 parts by mass of polymerizable liquid crystal monomer HCM-008, and 13.8 parts by mass of left-handed chiral doped Miscellaneous agent S1011, 1 mass part of photoinitiator Irgacure-819; the material of the semiconductor material layer is polyacetylene, and the material of the alignment layer material layer is polyimide.

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PUM

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Abstract

The invention discloses an infrared reflection device and a preparation method thereof. The infrared reflection device comprises a first light-transmitting conductive substrate and a second light-transmitting conductive substrate; the first light-transmitting conductive substrate and the second light-transmitting conductive substrate are arranged opposite to form a liquid crystal box, the liquid crystal box is filled with liquid crystal mixture, including negative liquid crystal, chiral dopant, polymerizable liquid crystal monomer and photoinitiator; the surface of the first light-transmitting conductive substrate facing the second light-transmitting conductive substrate is provided with a The semiconductor material layer; the surface of the second light-transmitting conductive substrate facing the first light-transmitting conductive substrate is provided with a parallel-oriented alignment layer material layer. Through the above method, the infrared reflective device of the present invention can not only be visible in the range of visible light but also play a role in regulating infrared light, and has low energy consumption.

Description

technical field [0001] The invention relates to the technical field of optical liquid crystal devices, in particular to an infrared reflective device and a preparation method thereof. Background technique [0002] As environmental protection and energy saving are paid more and more attention, the rational use of energy and the research and development of energy-saving products have made great progress. Scientific research has found that about 45% of solar energy comes from infrared light with a wavelength of 700 to 1100 nanometers. If the regulation of infrared rays is successfully realized, the use of energy can be greatly reduced. [0003] At present, most buildings are cooled by external equipment, such as shutters, roof sheds, etc. But these devices block visible light as well as infrared light, and are expensive. In this context, it is particularly important to find and develop infrared reflective devices that can not only be visible in the visible light range but als...

Claims

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Application Information

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IPC IPC(8): G02F1/13G02F1/133G02F1/1337G02F1/137
CPCG02F1/1313G02F1/13306G02F1/1337G02F1/137
Inventor 胡小文聂秋梅张新敏杨文敏孙海涛曾伟杰周国富
Owner SOUTH CHINA NORMAL UNIVERSITY