Preparation method of antimony selenide thin-film solar cell

A solar cell, antimony selenide technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of not being suitable for wide application and industrial production, process repeatability of waste liquid pollution, and other impurities, etc., and achieve low environmental impact. , less time, stable performance

Active Publication Date: 2019-11-05
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The vacuum thermal evaporation method has the advantages of large-area film formation and simple operation, but the performance of the battery prepared by it is poor
The solution method is not suitable for wide application and industrial production
The electrolyte formula and deposition process in electrochemical deposition have a decisive impact on the film quality, and the practical operability is poor. In addition, the electrochemical deposition method has waste liquid pollution to the environment and poor process repeatability during large-scale production. It is easy to produce other impurity phases in the preparation. Its further development has been greatly restricted

Method used

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preparation example Construction

[0030] The preparation method of a kind of antimony selenide thin-film solar cell of the present invention, at first dispose tin oxide hydrocolloid dispersion liquid and cadmium chloride aqueous solution of certain mass ratio, secondly on the clean patterned ITO conductive glass, spin in turn by spin coating method Coating and preparing tin oxide electron transport layer and cadmium chloride modification layer, drying and heat treatment, as the substrate, place the weighed antimony selenide powder and the substrate in the corresponding position of the quartz tube; then vacuumize the chamber , heat up the atmosphere furnace at a lower temperature (close to room temperature) at a certain heating rate. After reaching a certain temperature, keep it warm for a few minutes, and immediately open the upper cover of the atmosphere furnace after the heat preservation is over, so that the cavity can be cooled down to room temperature quickly, and the substrate Take it out, complete the fi...

Embodiment 1

[0044] 1) First, disperse 1 g of directly purchased tin oxide hydrocolloid dispersion into 4 g of deionized water, vibrate and sonicate for 20 minutes to obtain a tin oxide hydrocolloid dispersion with a mass ratio of 1:4.

[0045] 2) Weigh 0.1g of cadmium chloride powder and dissolve it in 5g of deionized water, stir for 5min to obtain a cadmium chloride aqueous solution with a mass ratio of 0.1:5.

[0046] 3) On a clean patterned ITO conductive glass (the area of ​​the glass substrate is 2×2cm 2 ), prepare a layer of tin oxide electron transport layer with a thickness of 50-60nm by spin coating method, the spin coating parameter is 3000r / min, coat for 30s and then place it on a hot plate at 150°C for 30min to obtain a uniform and smooth tin oxide film .

[0047] 4) On the tin oxide electron transport layer, spin coating with a speed of 800r / min for 5s by spin coating method, and then spin coating with a speed of 2500r / min for 20s to prepare a cadmium chloride modification l...

Embodiment 2

[0052] 1) First, disperse 1 g of directly purchased tin dioxide hydrocolloid dispersion into 5 g of deionized water, vibrate and sonicate for 20 minutes to obtain a tin dioxide gel dispersion with a mass ratio of 1:5.

[0053] 2) Weigh 0.1g of cadmium chloride powder and dissolve it in 5g of deionized water, stir for 5min to obtain a cadmium chloride aqueous solution with a mass ratio of 0.1:5.

[0054] 3) On a clean patterned ITO conductive glass (the area of ​​the glass substrate is 2×2cm 2 ), prepare a layer of tin dioxide electron transport layer with a thickness of 50-60nm by spin coating method, the spin coating parameter is 3000r / min, coat for 30s and then place it on a hot plate at 150°C for 30min to obtain a uniform and smooth tin dioxide tin film.

[0055] 4) On the tin dioxide electron transport layer, spin coating at a rate of 800r / min for 5s by spin coating method, and then spin coating at a rate of 2500r / min for 20s to prepare a cadmium chloride modification lay...

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Abstract

The invention discloses a preparation method of an antimony selenide thin-film solar cell. The method comprises the steps: preparing a tin dioxide hydrocolloid dispersion liquid and a cadmium chlorideaqueous solution according to a certain mass ratio; sequentially preparing a tin dioxide electron transport layer and a cadmium chloride modification layer on clean patterned ITO conductive glass through a spin coating method, and performing drying and thermal treatment to obtain a substrate; putting antimony selenide powder and the substrate into a quartz tube, putting the quartz tube into an atmosphere furnace, performing vacuum pumping of the cavity, performing heating and heat preservation, opening an upper cover of the atmosphere furnace immediately after heat preservation is completed so that the cavity is rapidly cooled to the room temperature, taking out the substrate, and completing film deposition to obtain an antimony selenide film; finally, evaporating a layer of gold on the surface of the antimony selenide film through a vacuum thermal evaporation method to serve as a battery electrode, and obtaining an antimony selenide film solar cell. The method has the advantages that(1) the cadmium chloride solution is spin-coated to form the film as a modification layer, so a high-efficiency battery device is obtained; (2) the operation is simple, the thin film preparation process consumes less time, the efficiency is high, the requirement on the experimental environment is low, and the prepared battery device has stable performance.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, in particular to a preparation method of an antimony selenide thin-film solar cell. Background technique [0002] The energy used by humans first came from animals and plants. Energy in modern society is mainly fossil energy, including oil, coal and natural gas. But fossil energy is non-renewable and will be exhausted. Human beings must face the situation after fossil energy is exhausted. This prompts us to seek new energy, especially renewable energy. There are different types of new energy, including solar energy, wind energy, tidal energy, geothermal energy, etc., and solar energy has great prospects for utilization and development. The power generation cost of silicon-based solar cells, which is currently dominant in the market, cannot compete with traditional fossil energy sources, and the high production cost of silicon-based solar cells restricts their large-scale utilization and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/072
CPCH01L31/072H01L31/18Y02E10/50Y02P70/50
Inventor 尹行天文森阙文修
Owner XI AN JIAOTONG UNIV
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