Preparation method of perovskite solar cell

A solar cell and perovskite technology, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of unfavorable large-scale production and low coating efficiency, achieve uniform and stable filling effect, improve coating efficiency, and improve filling efficiency. uniformity effect

Inactive Publication Date: 2019-12-27
HUBEI WONDER SOLAR LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the coating efficiency is low, which is not conducive to large-scale production

Method used

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  • Preparation method of perovskite solar cell
  • Preparation method of perovskite solar cell
  • Preparation method of perovskite solar cell

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Mix 0.438g of methylamine iodide and 1.314g of lead iodide, dissolve in 3mL of γ-butyrolactone, and stir evenly at 60°C to obtain CH 3 NH 3 PB 3 precursor solution.

[0029] A fluorine-doped tin oxide (FTO) conductive glass with a length of 100 mm and a width of 100 mm was laser etched into nine sub-cells connected in series. Clean the conductive glass sequentially with cleaning agent ( III cuvette cleaning agent, 2wt% deionized water solution), distilled water and absolute ethanol for ultrasonic cleaning for 10 minutes. Place the cleaned conductive glass on the hot stage, and use a titanium plate as a shield to block the counter electrode area. Heat to 450°C, then spray the ethanol solution of diisopropyl di(acetylacetonate) titanate (the volume ratio of diisopropyl di(acetylacetonate) titanate to ethanol is 1:39) on the conductive glass The surface, after decomposition, forms a dense layer of titanium dioxide. Remove the barrier of the counter electrode area, d...

Embodiment 2

[0032] Mix 0.438g of methylamine iodide and 1.314g of lead iodide, dissolve in 3mL of γ-butyrolactone, and stir evenly at 60°C to obtain CH 3 NH 3 PB 3 precursor solution.

[0033] A fluorine-doped tin oxide (FTO) conductive glass with a length of 100 mm and a width of 100 mm was laser etched into nine sub-cells connected in series. Clean the conductive glass sequentially with cleaning agent ( III cuvette cleaning agent, 2wt% deionized water solution), distilled water and absolute ethanol for ultrasonic cleaning for 10 minutes. Place the cleaned conductive glass on the hot stage, and use a titanium plate as a shield to block the counter electrode area. Heat to 450°C, then spray the ethanol solution of diisopropyl di(acetylacetonate) titanate (the volume ratio of diisopropyl di(acetylacetonate) titanate to ethanol is 1:39) on the conductive glass The surface, after decomposition, forms a dense layer of titanium dioxide. Remove the barrier of the counter electrode area, d...

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Abstract

The invention discloses a preparation method of a perovskite solar cell. The method comprises steps that perovskite precursor solution is coated on a substrate by adopting a flat needle head; the flatneedle head comprises an interface part and a needle head part which are communicated with each other, the interface part is used for being connected with a storage container of the perovskite precursor solution, and the needle head part is used for coating the perovskite precursor solution; the needle head part comprises an opening end and a connecting end, and the connecting end is connected with the interface part; the opening end is of a flat structure, the width of the opening end is 5-20000 times of the maximum thickness of the connecting end, and the width of the opening end is 2-100 times of the width of the connecting end. The method is advantaged in that coating efficiency can be improved, and photoelectric conversion efficiency of the solar cell is improved.

Description

technical field [0001] The invention relates to a preparation method of a perovskite solar cell. Background technique [0002] Perovskite solar cells have attracted much attention due to their high photoelectric conversion efficiency and low material cost. At the core of perovskite solar cells are organometallic trihalides with a body-centered cubic structure similar to calcium titanate, such as CH 3 NH 3 PB 3 . CH 3 NH 3 PB 3 It is a direct bandgap semiconductor with a bandgap of 1.5eV. [0003] Among various perovskite solar cell structures, the three-layer mesoporous structure with carbon as the back electrode is considered to be the most marketable structure due to its low material cost and scalable process. . The perovskite precursor solution is filled into the mesoporous carbon electrode layer, the mesoporous spacer layer, and the mesoporous support layer to achieve effective filling. However, during the preparation of large-area devices, the randomness of pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K30/15H10K30/151H10K30/00Y02E10/549
Inventor 韩宏伟徐觅
Owner HUBEI WONDER SOLAR LLC
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