Perovskite quantum dot optical function board and preparation method thereof

An optical function, quantum dot technology, applied in chemical instruments and methods, luminescent materials, synthetic resin layered products, etc., can solve the problems of high assembly cost and single function, improve production controllability, simplify preparation methods, The effect of high light transmittance

Active Publication Date: 2018-06-08
南通创亿达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional diffuser plate is a single-layer functional plate. Although it has good light transmittance, shielding and durability, its function is relatively single, and the assembly cost is high when it is matched with optical devices with other functions.

Method used

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  • Perovskite quantum dot optical function board and preparation method thereof
  • Perovskite quantum dot optical function board and preparation method thereof
  • Perovskite quantum dot optical function board and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A perovskite quantum dot optical functional plate with a three-layer structure, the structure includes a first substrate layer, a second main body layer and a third substrate layer, and the main body layer is sandwiched between the first substrate layer and the third substrate layer between. The first base material layer is a thin layer made of an optical material with good adhesiveness and high light transmittance, and has good light transmittance, and the material of the third base material layer is a modified plastic with a relatively low melting point. The two base layers are extruded into a thin layer after the polymer particles are melted, and the thickness is less than 100 μm. The material can be polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate ( PC), polypropylene (PP) and other polymers or copolymers, the modification of materials is generally achieved by adding diffusing agents, UV absorbers, light stabilizers, antioxidants and other formulation...

Embodiment 2

[0042] The difference between the present embodiment and the first embodiment lies in that: the manufacturing method of the main functional layer of the quantum dot optical functional plate is different. The preparation method is as follows:

[0043] 1. Preparation of precursor solution: PbBr 2 (76.0 g, 0.207 mol) and CsBr (44.0 g, 0.207 mol) were dissolved in N,N - Dimethylformamide (DMF), then add 120 mL oleic acid and 60 mL oleylamine, stir and mix evenly to form a relatively stable precursor solution, ready for use;

[0044] 2. In situ synthesis of CsPbBr 3 Perovskite quantum dot optical function board: 20 kg polystyrene pellets ( M n = 82200 gmol -1 , M w = 212700 gmol -1 , M w / M n = 2.51), added to the hopper of the extruder, heated to 200 o C. After the polymer particles are in a molten flow state, argon gas is introduced to form a protective atmosphere, and the above precursor solution is added. Use the extruder screw to mix the system evenly, turn o...

Embodiment 3

[0046] The difference between this embodiment and Embodiment 1 is that the main functional layer of the quantum dot optical function board is prepared by first preparing quantum dot polymer particles in situ in a granulator, and then melt-extruding them in an extruder. Out into the board. The preparation method is as follows:

[0047] 1. Preparation of precursor cesium oleate: as described in Example 1;

[0048] 2. In situ synthesis of CsPbBr 3 Perovskite quantum dot polystyrene pellets: After the granulator is turned on and preheated, set the temperature from zone 1 to zone 10 of the granulator to 140~195 o C, membrane head and melt temperature set to 200 o C; 76.0 g lead bromide (PbBr 2 ), 60mL oleylamine mixed with 20 kg polystyrene pellets ( M n = 82200 gmol -1 , M w = 212700 gmol -1 , M w / M n = 2.51), feed the material at the feed port of the granulator, and inject argon gas to form a protective atmosphere. After setting the host speed, suction speed, ...

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Abstract

The invention discloses a perovskite quantum dot optical function board. A first substrate layer, a second main body layer and a third substrate layer form a three-layer structure; the second main body layer is clamped between the first substrate layer and the third substrate layer, and is made of transparent materials in which quantum dots are uniformly dispersed; the layer thickness is greater than the first substrate layer and the third substrate layer; the upper surface of the first substrate layer is provided with a raised structure or a V-shaped light gathering structure; the lower surface of the third substrate layer is provided with a regular or irregular raised structure. The perovskite quantum dot optical function board is formed by the three-layer structure; the formula and thedimension of the structure can be flexibly regulated; the production controllability is improved; the function requirements of concealing performance, brightness, quantum dot luminescence and the likecan be simultaneously met; the working procedures of synthesizing the quantum dots, preparing a quantum dot membrane, assembling the quantum dot function board and the like are not needed; the manufacturing time and the manufacturing cost are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of quantum dot optical functional boards, in particular to the preparation of a cesium lead halide perovskite quantum dot optical functional board with a multilayer structure. Background technique [0002] In recent years, researchers have studied nanoscale organic / inorganic hybrid lead halide perovskites (MAPbX 3 , FAPbX 3 ;MA=CH 3 NH 3 + , FA = HC(=NH)NH 3 + , X = Cl, Br, I) quantum dots and all-inorganic perovskite CsPbX 3 (X = Cl, Br, I) Quantum dots have undergone a lot of research work. Due to its quantum yield of more than 90%, narrow emission spectrum half-width (10~40nm), short fluorescence lifetime (<30 ns), high crystallinity, high electron and hole mobility, and low price, it is an excellent optical Performance, this type of luminescent material has attracted much attention in applications such as photovoltaic cells and light-emitting diodes. Monodisperse all-inorganic CsPbX 3 Perovs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08C09K11/66B32B27/30B32B27/18
Inventor 刘晓东黄海涛
Owner 南通创亿达新材料股份有限公司
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