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Copper zinc tin sulfur quantum dots and preparation method thereof

A technology of sulfur quantum and copper zinc tin is applied in the field of preparation of low-cost copper zinc tin sulfur quantum dots, which can solve problems such as the toxicity of quantum dots, and achieve the effect of improving repeatability, excellent properties and good performance.

Inactive Publication Date: 2016-02-17
CHANGCHUN FANGGUAN ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the multi-exciton effect, quantum dots are likely to exceed the 31% photoelectric conversion efficiency of silicon cells. At present, better thin-film cells are made of lead-containing compounds, which does not meet the non-toxic materials required for future development. characteristics, and copper-zinc-tin-sulfur quantum dots can solve the toxicity problem of quantum dots, in this context, it is extremely important to design a synthesis method of high-quality copper-zinc-tin-sulfur quantum dots

Method used

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  • Copper zinc tin sulfur quantum dots and preparation method thereof
  • Copper zinc tin sulfur quantum dots and preparation method thereof
  • Copper zinc tin sulfur quantum dots and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: by atomic number, formula is as follows:

[0032] Chloroform 10000 parts

[0033] Methanol 5000 parts

[0034] Dodecylamine 750 parts

[0035] Fourteen mercaptan 500 parts

[0036] 2 parts copper sulfate

[0037] 1 part zinc nitrate

[0038] 1 part tin acetate

[0039] Preparation Process:

[0040] a. According to the number of atoms, 2 parts of copper sulfate, 1 part of zinc nitrate, 1 part of tin acetate, 500 parts of tetradecyl mercaptan, and 750 parts of dodecylamine were added to a three-necked flask at room temperature, Stir in the open system and heat to 180 degrees for 5 minutes;

[0041] b. the solution obtained in step a is cooled to 60 degrees, and 5000 parts of chloroform and 5000 parts of methanol are added to obtain a cloudy solution;

[0042] c. Centrifuge the turbid solution in step b for 10 minutes in a centrifuge, and add 5000 parts of chloroform to the obtained precipitate to obtain copper-zinc-tin-sulfur quantum dots dispersed i...

Embodiment 2

[0043] Embodiment 2: by atomic number, formula is as follows:

[0044] Dichloromethane 10000 parts

[0045] 5000 parts of ethanol

[0046] Octadecylamine 4125 parts

[0047] Dodecanethiol 2750 parts

[0048] 11 parts copper acetate

[0049] 5.5 parts of zinc nitrate

[0050] 5.5 parts of tin chloride

[0051] Preparation Process:

[0052] a. According to the number of atoms, add 11 parts of copper acetate, 5.5 parts of zinc nitrate, 5.5 parts of tin chloride, 2750 parts of dodecyl mercaptan, and 4125 parts of octadecylamine into a three-necked flask at room temperature , stirred in the open system and heated to 180 degrees for 5 minutes.

[0053] b. Cool the solution obtained in step a to 60°C, add 5000 parts of dichloromethane and 5000 parts of ethanol to obtain a cloudy solution.

[0054] c. Centrifuge the turbid solution in step b for 10 minutes in a centrifuge, and add 5000 parts of dichloromethane to the obtained precipitate to obtain copper-zinc-tin-sulfur quantu...

Embodiment 3

[0055] Embodiment 3: by the number of atoms, the formula is as follows:

[0056] Toluene 10000 parts

[0057] Acetone 5000 parts

[0058] Dodecylamine 7500 parts

[0059] Tetradecyl mercaptan 5000 parts

[0060] 20 parts copper nitrate

[0061] Zinc sulfate 10 parts

[0062] 10 parts tin nitrate

[0063] Preparation Process:

[0064] a. by number of atoms, 20 parts of copper nitrate, 10 parts of zinc sulfate, 10 parts of tin nitrate, 5000 parts of tetradecyl mercaptan, and 7500 parts of dodecylamine were added to a three-necked flask at room temperature, Stir in the open system and heat to 180 degrees for 5 minutes;

[0065] b. the solution obtained in step a is cooled to 60 degrees, and 5000 parts of toluene and 5000 parts of acetone are added to obtain a cloudy solution;

[0066] c. Centrifuge the turbid solution in step b for 10 minutes in a centrifuge, and add 5000 parts of toluene to the obtained precipitate to obtain copper-zinc-tin-sulfur quantum dots dispersed ...

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Abstract

The invention relates to copper zinc tin sulfur quantum dots and a preparation method thereof, and belongs to the field of novel nanometer materials. 1-10 g of copper zinc tin sulfur quantum dots are contained in a solution per 100 mL, and the particle size of the quantum dots ranges from 3 nanometers to 20 nanometers. The method comprises the steps that firstly, copper salt, zinc salt, tin salt, alkyl sulfhydryl and fatty amine are added into a three-mouth flask, stirring and heating are performed in an opening system at the temperature of 180 DEG C for a reaction for 5 min, then the solution is cooled to 60 DEG C, and a quantum dot solvent and a quantum dot precipitant are added to obtain a turbid solution. Centrifugal is performed on the turbid solution in a centrifugal machine for 10 min, and the quantum dot solvent is added into obtained precipitates. All the adopted raw materials are low in cost, and the copper zinc tin sulfur quantum dots are rich in content and low in toxicity, greatly lower the reaction cost and are particularly applicable to mass production.

Description

technical field [0001] The invention belongs to the field of new nanometer materials, and in particular relates to a method for preparing low-cost copper-zinc-tin-sulfur quantum dots with good photoelectric properties and an alloy structure. Background technique [0002] Future electronic materials not only need to provide ideal optoelectronic properties, but also contain abundant and non-toxic elements. Although silicon can meet these requirements, it has obvious limitations, so other materials need to be used in some important applications. Unfortunately, currently more promising materials, such as GaAs or CdTe, contain highly toxic elements and are not suitable for sustainable development. Therefore, a sustainable optoelectronic material must be developed to solve these problems. [0003] One of the currently worthwhile developments is copper zinc tin sulfur quantum dots, which are promising new semiconductor materials for solar cells, which have a high extinction coeffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00B82Y30/00
CPCC01G19/006C01P2002/84C01P2002/85C01P2004/04C01P2004/64
Inventor 张文进钟圆圆梁佳林
Owner CHANGCHUN FANGGUAN ELECTRONICS TECH CO LTD
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