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Method for growing antimony-based thin film material through evaporation and hydrothermal two steps, and thin film solar cell

A technology for thin-film solar cells and thin-film materials, which is applied in the field of two-step growth of antimony-based thin-film materials by evaporating water and heat. Achieve the effect of solving the high surface undulation of the film, optimizing the interface characteristics, and passivating grain defects

Pending Publication Date: 2021-06-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the antimony-based film prepared by evaporation has high surface undulation and poor compactness.
These problems often directly affect the energy conversion efficiency of antimony-based thin film solar cells.

Method used

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  • Method for growing antimony-based thin film material through evaporation and hydrothermal two steps, and thin film solar cell
  • Method for growing antimony-based thin film material through evaporation and hydrothermal two steps, and thin film solar cell
  • Method for growing antimony-based thin film material through evaporation and hydrothermal two steps, and thin film solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: as figure 1 As shown, a Sb grown by evaporative hydrothermal two-step method 2 S 3 Electron Transport Light Absorbing Thin Film Solar Cells

[0059] (1) The FTO conductive glass was ultrasonically cleaned with deionized water, acetone, isopropanol, and absolute ethanol for 40 minutes each, and then cleaned with nitrogen gas for 15 minutes in an oxygen plasma cleaner to obtain a clean and dry FTO transparent conductive glass. film;

[0060] (2) Preparation of CdS electron transport layer: using cadmium nitrate solution, ammonia solution, thiourea solution and ultrapure water to prepare a precursor solution. Place it in a water bath at 65°C for 15 minutes to complete the film deposition. Finally, anneal on a heating plate at 400°C for 10 minutes in air to obtain a CdS thin film substrate;

[0061] (3) Preparation of Sb by rapid thermal evaporation method on CdS thin film substrate 2 S 3 film. Weigh 0.2g of Sb 2 S 3 The powder is used as the evapora...

Embodiment 2

[0065] Embodiment 2: A kind of Sb grown by evaporation hydrothermal two-step method 2 S 3 Electron Transport Light Absorbing Thin Film Solar Cells

[0066] (1) The ITO conductive glass was ultrasonically cleaned with deionized water, acetone, isopropanol, and absolute ethanol for 40 minutes each, and then cleaned with nitrogen gas for 15 minutes in an oxygen plasma cleaner to obtain a clean and dry ITO transparent conductive glass. film;

[0067] (2) Preparation of CdS electron transport layer: using cadmium nitrate solution, ammonia solution, thiourea solution and ultrapure water to prepare a precursor solution. Place it in a water bath at 65°C for 15 minutes to complete the film deposition. Finally, anneal on a heating plate at 400°C for 10 minutes in air to obtain a CdS thin film substrate;

[0068](3) Preparation of Sb by rapid thermal evaporation method on CdS thin film substrate 2 S 3 film. Weigh 2g of Sb 2 S 3 The powder is used as the evaporation source, the a...

Embodiment 3

[0072] Embodiment 3: A kind of Sb grown by evaporating hydrothermal two-step method 2 S 3 Electron Transport Light Absorbing Thin Film Solar Cells

[0073] (1) The BZO conductive glass was ultrasonically cleaned with deionized water, acetone, isopropanol, and absolute ethanol for 40 minutes each, and then cleaned with nitrogen gas for 15 minutes in an oxygen plasma cleaner to obtain a clean and dry BZO transparent conductive glass. film;

[0074] (2) Preparation of CdS electron transport layer: using cadmium nitrate solution, ammonia solution, thiourea solution and ultrapure water to prepare a precursor solution. Place it in a water bath at 65°C for 15 minutes to complete the film deposition. Finally, anneal on a heating plate at 400°C for 10 minutes in air to obtain a CdS thin film substrate;

[0075] (3) Preparation of Sb by rapid thermal evaporation method on CdS thin film substrate 2 S 3 film. Weigh 4g of Sb 2 S 3 The powder is used as the evaporation source, the ...

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Abstract

The invention discloses a method for growing an antimony-based thin film material through evaporation and hydrothermal two steps, and a thin film solar cell. The method for growing the antimony-based thin film material through evaporation and hydrothermal two steps is characterized in that an evaporation and hydrothermal two-step method is adopted to prepare an antimony-based electron transmission light absorption thin film. The antimony-based electron transmission light absorption thin film is one of a Sb2S3 electron transmission light absorption thin film, a Sb2Se3 electron transmission light absorption thin film and a Sb2S3 / Sb2Se3 gradual change band gap electron transmission light absorption thin film. The antimony-based thin film solar cell prepared from the antimony-based thin film material comprises the antimony-based electron transmission light absorption thin film, a hole transmission layer and a metal electrode layer which are sequentially stacked. The antimony-based thin film is grown by using a rapid thermal evaporation method, and then the subsequent growth of the thin film is completed by using a hydrothermal method. The surface of the antimony-based thin film continuously grown through the hydrothermal method is flat and compact, the effects of passivating surface defects of the antimony-based thin film and optimizing interface characteristics can be achieved, and the problems that the surface of the thin film is high in undulation degree and uneven due to a rapid thermal evaporation method are effectively solved.

Description

technical field [0001] The invention relates to a photoelectric thin film and a thin film solar cell. In particular, it relates to a method for growing an antimony-based thin film material by evaporating hydrothermal two-steps and a thin film solar cell. Background technique [0002] In recent years, thin-film solar cells have shown a vigorous development trend due to their advantages such as simple preparation process, flexibility and bendability, especially compound semiconductor thin-film cells are the center of photovoltaic technology research. At present, the mainstream compound semiconductor thin-film solar cells mainly include copper indium gallium selenide (CIGS) and cadmium telluride (CdTe) thin-film solar cells. ), and the preparation process is complex, so a wide range of applications is limited. [0003] Antimony-based materials (Sb 2 S 3 , Sb 2 Se 3 , Sb 2 (S, Se) 3 ) As a new type of photovoltaic material, it has a high light absorption coefficient, and...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/48C23C14/06C23C14/24C23C18/12C23C28/04
CPCC23C14/0623C23C14/24C23C18/1204C23C28/04H10K71/12H10K30/10Y02E10/549
Inventor 李海明冯新文张俊双姜磊站文华郭洪武周静曹宇
Owner STATE GRID CORP OF CHINA