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Method for forming electron transport layer of mesoscopic solar cell

A technology of electron transport layer and solar cell, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problem of inability to prepare high-quality and large-area electron transport layer thin films, and achieve the advantages of avoiding interface recombination and good film thickness uniformity Effect

Active Publication Date: 2020-01-07
HUBEI WONDER SOLAR LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing process of large-area perovskite solar cells faces a technical problem, that is, the traditional spin-coating process cannot prepare high-quality large-area electron transport layer films.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030](1) The electrode surface of the substrate is treated with ultraviolet ozone cleaning machine, the substrate is conductive glass, the size is 360mm × 300mm, the electrode is FTO, the electrode light transmittance is 99%, and the surface root mean square of the electrode surface is rough The wavelength of ultraviolet light for ultraviolet ozone treatment is set to 185nm and 254nm, the concentration of ozone is 35%, and it is cleaned at 50Hz for 10min to obtain a printing substrate.

[0031] (2) Titanium dioxide (particle size 30-45nm, specific surface area 62.17-75.38m 2 / g) Disperse in terpineol, roll and disperse in a three-roll machine at a speed of 200rpm at 22°C and a relative humidity of 45%, to obtain a mesoporous titanium dioxide slurry with a viscosity of about 400mPa·s and a solid content of is 25wt%.

[0032] The above mesoporous titanium dioxide slurry is deposited onto a printing substrate by screen printing technology to form a mesoporous titanium dioxide w...

Embodiment 2

[0035] (1) The electrode surface of the substrate is treated with ultraviolet ozone cleaning machine, the substrate is conductive glass, the size is 360mm × 300mm, the electrode is FTO, the electrode light transmittance is 99%, and the surface root mean square of the electrode surface is rough The wavelength of ultraviolet light for ultraviolet ozone treatment is set to 185nm and 254nm, the concentration of ozone is 35%, and it is cleaned at 50Hz for 10min to obtain a printing substrate.

[0036] (2) Titanium dioxide (particle size 30-45nm, specific surface area 62.17-75.38m 2 / g) Disperse in terpineol, roll and disperse in a three-roll machine at a speed of 200rpm at 22°C and a relative humidity of 45%, to obtain a mesoporous titanium dioxide slurry with a viscosity of about 400mPa·s and a solid content of is 25wt%.

[0037] The above mesoporous titanium dioxide slurry is deposited onto a printing substrate by screen printing technology to form a mesoporous titanium dioxide ...

Embodiment 3

[0040] (1) The electrode surface of the substrate is treated with ultraviolet ozone cleaning machine, the substrate is conductive glass, the size is 360mm × 300mm, the electrode is FTO, the electrode light transmittance is 99%, and the surface root mean square of the electrode surface is rough The wavelength of ultraviolet light for ultraviolet ozone treatment is set to 185nm and 254nm, the concentration of ozone is 35%, and it is cleaned at 50Hz for 10min to obtain a printing substrate.

[0041] (2) Titanium dioxide (particle size 30-45nm, specific surface area 62.17-75.38m 2 / g) Disperse in terpineol, roll and disperse in a three-roll machine at a speed of 200rpm at 22°C and a relative humidity of 45%, to obtain a mesoporous titanium dioxide slurry with a viscosity of about 400mPa·s and a solid content of is 25wt%.

[0042] The above mesoporous titanium dioxide slurry is deposited onto a printing substrate by screen printing technology to form a mesoporous titanium dioxide ...

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Abstract

The invention discloses a method for forming an electron transport layer of a mesoscopic solar cell, and the method comprises the following steps: (1) performing ultraviolet ozone treatment on an electrode surface of a substrate to obtain a printing substrate; (2) depositing mesoporous titanium dioxide slurry on the printing substrate through the silk-screen printing technology to form a mesoporous titanium dioxide wet film; (3) placing the substrate with the mesoporous titanium dioxide wet film in a nitrogen atmosphere for standing, performing drying, and performing sintering in an air or oxygen atmosphere to obtain the mesoporous titanium dioxide electron transport layer. According to the method, the electron transport layer with uniform thickness can be efficiently obtained.

Description

technical field [0001] The invention relates to a method for forming an electron transport layer of a mesoscopic solar cell. Background technique [0002] Perovskite solar cells have been widely concerned due to their advantages of high photoelectric conversion efficiency and low material cost since they were reported in 2012. At present, the highest photoelectric conversion efficiency in the laboratory has reached 22.1%. It is considered to be the next generation of new solar cells that can replace crystalline silicon solar cells, and has broad commercialization prospects. [0003] In the research process of perovskite solar cells, a variety of structures based on different materials have been developed. Among them, the three-layer mesoporous structure with carbon as the back electrode is considered to be the most promising due to its low material cost and scalable process. A structure of marketing prospects. The perovskite solar cell with this structure uses mesoporous t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/13H10K71/40H10K30/00Y02E10/549
Inventor 韩宏伟
Owner HUBEI WONDER SOLAR LLC
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