Method for continuous preparation of copper zinc tin sulfur film

A copper-zinc-tin-sulfur, thin-film technology, applied in sustainable manufacturing/processing, climate sustainability, final product manufacturing, etc., can solve problems such as heat and mass transfer limitations, decreased product uniformity, loss of function, etc. Simple process and low cost effect

Active Publication Date: 2013-11-06
徐东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of heat and mass transfer, this method is only suitable for the preparation of small batches in the laboratory
For mass production, the traditional micellar method reduces the heat and consistency of the components due to the large volume of the solution, which leads to a decrease in product uniformity, which has a particularly significant impact on the hot injection method
In addition, the stability of the CZTS film made by the traditional method is insufficient, and its combined components are easy to decompose, thus losing its function, resulting in a short service life of the CZTS film

Method used

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  • Method for continuous preparation of copper zinc tin sulfur film
  • Method for continuous preparation of copper zinc tin sulfur film
  • Method for continuous preparation of copper zinc tin sulfur film

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preparation example Construction

[0038] The preparation method of the above-mentioned copper-zinc-tin-sulfur thin film is different from the existing preparation method: the metal cation solution is first used to coat the film and then vulcanized by sulfur, but the reaction precursor solution system containing four sources is prepared first, and then the heating reaction, purification, coating The drying of the membrane and the selenium sulfurization treatment ensure the preparation of a thin film with good photoelectric conversion performance and stable performance. At the same time, the preparation method of the above-mentioned copper-zinc-tin-sulfur thin film adopts ingenious design to realize continuous and mass production, breaking the conventional laboratory production mode.

[0039] Now, the present invention will be further described in detail by taking the method for continuously preparing copper-zinc-tin-sulfur thin films as an example. Wherein, the substrate is a glass substrate, which is cut into ...

Embodiment 1

[0041] A method for continuously preparing copper-zinc-tin-sulfur (hereinafter referred to as CZTS) thin films in a flow reactor, comprising the steps of:

[0042] 1) Preparation of reaction precursor solution

[0043] The reactive precursor solution for continuous flow consists of SnCl 4 , CuCl 2 , Sulfur powder and ZnO are dissolved in a mixture of oleylamine and octadecene. Specific preparation method: in 2.0mmolCuCl 2 ·H 2 O and 1.0 mmol SnCl 4 ·5H 2 A small amount of THF (tetrahydrofuran) was added to the O mixture to increase the SnCl 4 Solubility in oleylamine, add THF (tetrahydrofuran) dropwise until the copper source and tin source are completely dissolved. After completely dissolving, 1.0 mmol of ZnO and 39 mL of oleylamine were added to the above mixed solution. The mixed solution was then heated to 50 °C in a rotary evaporator. After the ZnO was completely dissolved, the internal pressure in the rotary evaporator was reduced to 0.5 KPa to remove THF and ot...

Embodiment 2

[0056]A method for continuously preparing copper-zinc-tin-sulfur (hereinafter referred to as CZTS) thin films in a flow reactor, comprising the steps of:

[0057] 1) Preparation of reaction precursor solution

[0058] The reactive precursor solution for continuous flow consists of SnCl 2 2H 2 O, CuSO 4 ·5H 2 O, ZnCl 2 And thiourea is dissolved in a mixture of dodecylamine and octadecene to form. Specific preparation method: in 0.2mmol CuSO 4 ·5H 2 O and 0.1 mmol SnCl 2 2H 2 A small amount of THF (tetrahydrofuran) was added to the O mixture to increase the SnCl 2 Solubility in dodecylamine, add THF (tetrahydrofuran) dropwise until the copper source and tin source are completely dissolved. After complete dissolution, add 0.1 mmol of ZnCl 2 and 20 mL of dodecylamine were added to the above mixed solution. The mixed solution was then heated to 80 °C in a rotary evaporator. in ZnCl 2 After complete dissolution, the internal pressure in the rotary evaporator was reduce...

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Abstract

The invention discloses a method for continuous preparation of a copper zinc tin sulfur (CZTS) film. The method comprises the preparation steps of: preparation of a reaction precursor solution, continuous preparation of CZTS nanocrystals, purification of the CZTS nanocrystals, blending of a CZTS ink, coating drying and selenation sulfurization annealing treatment. Specifically, the means of continuous preparation of the CZTS nanocrystals makes the continuous and mass preparation of the CZTS film come true, and the preparation is free of the problems of uneven heating and limited heat and mass transfer. At the same time, the selenation sulfurization annealing treatment endows the prepared film with high photoelectric conversion efficiency and strong stability. And the method has the advantages of simple operation and low cost, thus being suitable for marketing production.

Description

technical field [0001] The invention belongs to the field of new energy sources of photoelectric materials, relates to thin-film solar cell materials, and in particular to a method for continuously preparing copper-zinc-tin-sulfur thin films. Background technique [0002] The emergence of the solar photovoltaic industry undoubtedly brings a ray of sunshine to the energy and environmental crises faced by the rapid development of science and technology today. Solar energy is considered to be inexhaustible and inexhaustible green energy. From the discovery of the photovoltaic phenomenon in 1887 to the theoretical explanation of the p-n junction working principle in 1949, to the invention of the first silicon solar cell in the true sense in 1954, to today's solar photovoltaic technology, both in theoretical research and practical technology The rapid development of the current situation all shows the important position of the solar photovoltaic industry in the hearts of researc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/22
CPCY02P70/50
Inventor 徐东徐永清陈雄
Owner 徐东
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