Vapor pressure assisted preparation method of copper-based halide material and product and application thereof

A halide, copper-based technology, applied in the field of polycrystalline material preparation, can solve problems such as instability of white light, and achieve the effects of good air stability, long device service life and simple operation

Pending Publication Date: 2021-10-26
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to control the same ratio for different batches of products. With the attenuation of blue light chips or phosphors, the emitted white light becomes un

Method used

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  • Vapor pressure assisted preparation method of copper-based halide material and product and application thereof
  • Vapor pressure assisted preparation method of copper-based halide material and product and application thereof
  • Vapor pressure assisted preparation method of copper-based halide material and product and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Preparation of a white light polymondary material cerium iodine, preparation process figure 1 As shown, the specific steps are as follows:

[0032] (1) Select 2.597 g (10 mmol) iodide (CSI) and 1.904 g (10 mmol) iodide (Cui) to add 20 ml of hydroiodic acid (HI), placed on the heating station, add magnet, and open magnetic force. The mixer was heated to 105 ° C, heated for 2 hours or more to iodide (CSI) and iodide (Cui) well dissolved to form a solution;

[0033] (2) A solution of sufficiently dissolved in step (1) is filtered with 0.45 μm of polytetrafluoroethylene filter head, and the obtained clear solution is placed in a clean polytetrafluoroethylene inner stripper and sealed in the reactor, The reactor was placed in a prioruated cooling heating station or an oven to cool down at a rate of 0.5 ° C / h, and a white light polycrystalline copper iodine material was obtained by fuel to room temperature.

Example Embodiment

[0034] Example 2

[0035] Preparation of a blue light single crystal material CS 3 Cu 2 I 5 The specific steps are as follows:

[0036] (1) Select 1.948 g (7.5 mmol) iodium iodide (CSI) and 0.952 g (5 mmol) iodide (Cui) to add 20 ml of hydroiodic acid (HCl), placed on the heating station, add a magneton , The magnetic force is stirred, heated to 100 ° C, heated for 2 hours or more to iodide (CSI) and iodide (Cui) completely dissolved formation solution;

[0037] (2) A solution of sufficiently dissolved in step (1) is filtered with 0.45 μm polytetrafluoroethylene filter head, and the obtained clear solution is placed in a clean polytetrafluoroethylene inner stripper and sealed in the reaction kettle. Then, the reaction kara is lowered by a temperature of 1 ° C / h on the hot station of the prior art, and the blue light single crystal material Cs can be obtained by falling to room temperature. 3 Cu 2 I 5 .

Example Embodiment

[0038] Example 3

[0039] Preparation of a yellow light single crystal material CSCU 2 I 3 The specific steps are as follows:

[0040] (1) Select 1.298 g (5 mmol) iodide (CSI) and 1.904 g (10 mmol) iodide (Cui) to add 20 ml of hydroiodic acid (Hi), placed on the heater, add a magnet, and open magnetic force. The mixer is heated to 130 ° C, heating 2 hours or more to iodide (CSI) and iodide (Cui) completely dissolved formation solution;

[0041] (2) A solution of sufficiently dissolved in step (2) is filtered with 0.45 μm of polytetrafluoroethylene filter head, and the obtained clear solution is placed in a clean polytetrafluoroethylene lining, and then the polytetrafluoroethylene The substance is placed on the hot stage of the progral controlled cooling reaction to cool down at a rate of 1 ° C / h, and it can obtain a yellow light single crystal material CSCU at a rate of 1 ° C / h. 2 I 3 .

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Abstract

The invention relates to a vapor pressure assisted preparation method of a copper-based halide material and a product and application thereof, which belong to the technical field of polycrystalline material preparation. The invention discloses a preparation method of a copper-based halide material, which comprises the following steps of mixing cesium halide, cuprous halide and halogen acid, and then carrying out cooling reaction at the rate of 0.1-5 DEG C/h. When the molar ratio of cesium to copper to halogen acid is 3: 2: 5, the generated compound emits blue light of 450 nm; when the molar ratio of cesium to copper to halogen acid is 1: 2: 3, the generated compound emits blue light of 580 nm; when the molar ratio of cesium, copper and haloid acid is between 3: 2: 5 and 1: 2: 3, the generated compound emits white light (a combination of blue and yellow light).

Description

technical field [0001] The invention belongs to the technical field of polycrystalline material preparation, and relates to a vapor pressure-assisted preparation method of a copper-based halide material and its product and application. Background technique [0002] As a widely used white light, it is actually a mixture of multiple monochromatic lights, such as: blue light + yellow light, or blue light + green light + red light, etc. Currently, the most common way on the market is to use blue light chips to excite yellow phosphors to emit white light. Different proportions of monochromatic light will affect its emission of cool white light or warm white light. However, it is difficult to control the same ratio for different batches of products. With the attenuation of blue light chips or phosphors, the emitted white light becomes unstable. This will have a huge adverse effect on some high colorimetric places. Currently, there are no commercially reliable materials that dir...

Claims

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Application Information

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IPC IPC(8): C30B28/04C30B29/12G01T1/202C09K11/61
CPCC30B28/04C30B29/12G01T1/2023C09K11/616Y02B20/00
Inventor 臧志刚汪百前
Owner CHONGQING UNIV
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