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Preparation of carbon composite electrode for improving photoelectric performance of perovskite solar cell

A technology for solar cells and photoelectric performance, applied in the field of solar cells, can solve the problems of low stability of perovskite, high energy consumption of electrode Au, expensive hole transport materials, etc. simple craftsmanship

Inactive Publication Date: 2019-05-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although perovskite solar cells have achieved high photoelectric conversion efficiency, the stability of perovskite is not high, and it is easy to react with water and oxygen in the air and degrade.
In addition, hole transport materials are more expensive, and the commonly used electrodes Au and Ag need to be prepared by vacuum evaporation with high energy consumption.

Method used

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  • Preparation of carbon composite electrode for improving photoelectric performance of perovskite solar cell
  • Preparation of carbon composite electrode for improving photoelectric performance of perovskite solar cell
  • Preparation of carbon composite electrode for improving photoelectric performance of perovskite solar cell

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Embodiment 1

[0024] A method for preparing a carbon composite electrode that improves the photoelectric performance of a perovskite solar cell is as follows:

[0025] 1. Cut the FTO into small glass with a size of 25mm×25mm, wipe the glass slag and stains on the surface of the FTO with tissue paper dipped in absolute ethanol, then ultrasonically in detergent for 10min, and then ultrasonically in acetone, isopropanone, and ethanol in turn 10min, finally stored in ethanol, sealed with plastic wrap, and blown dry with nitrogen before use.

[0026] 2. Place the cleaned FTO on a homogenizer to prepare TiO 2 For the dense layer, use a pipette gun to draw a 0.15M n-butanol solution of bis(acetylacetonato)diisopropyl titanate, drop it on the surface of FTO for spin coating, adjust the speed to 1500rpm s, and then place it on the heating plate After annealing, spin-coat the mesoporous layer after cooling.

[0027] 3. Spin-coat TiO 2 The substrate of the dense layer is placed on a homogenizer to ...

Embodiment 2

[0032] A method for preparing a carbon composite electrode that improves the photoelectric performance of a perovskite solar cell is as follows:

[0033] 1. Cut the FTO into small glass with a size of 25mm×25mm, wipe the glass slag and stains on the surface of the FTO with tissue paper dipped in absolute ethanol, then ultrasonically in detergent for 10min, and then ultrasonically in acetone, isopropanone, and ethanol in turn 10min, finally stored in ethanol, sealed with plastic wrap, and blown dry with nitrogen before use.

[0034] 2. Place the cleaned FTO on a homogenizer to prepare TiO 2 For the dense layer, use a pipette gun to draw a 0.15M n-butanol solution of bis(acetylacetonato)diisopropyl titanate, drop it on the surface of FTO for spin coating, adjust the speed to 1500rpm s, and then place it on the heating plate After annealing, spin-coat the mesoporous layer after cooling.

[0035] 3. Spin-coat TiO 2 The substrate of the dense layer is placed on a homogenizer to ...

Embodiment 3

[0040] A method for preparing a carbon composite electrode that improves the photoelectric performance of a perovskite solar cell is as follows:

[0041] 1. Cut the FTO into small glass with a size of 25mm×25mm, wipe the glass slag and stains on the surface of the FTO with tissue paper dipped in absolute ethanol, then ultrasonically in detergent for 20min, and then ultrasonically in acetone, isopropanone, and ethanol in turn 20min, finally stored in ethanol, sealed with plastic wrap, and blown dry with nitrogen before use.

[0042] 2. Place the cleaned FTO on a homogenizer to prepare TiO 2 For the dense layer, use a pipette gun to draw a 0.15M n-butanol solution of bis(acetylacetonato)diisopropyl titanate, drop it on the surface of FTO for spin coating, adjust the speed to 3000rpm s, and then place it on the heating plate After annealing, spin-coat the mesoporous layer after cooling.

[0043] 3. Spin-coat TiO 2 The substrate of the dense layer is placed on a homogenizer to ...

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Abstract

The present invention belongs to the technical field of perovskite solar cells, and particularly relates to a preparation method of a carbon composite electrode for improving photoelectric performanceof a perovskite solar cell. The main technical solution of the present invention is as follows: a carbon paste / CuO composite electrode material is prepared and applied to a perovskite solar cell; anda prepared carbon / CuO composite electrode improves hole collection capability in the cell and improves the photoelectric conversion efficiency and the stability of the perovskite solar cell. The preparation process of the present invention is simple and convenient, and the cost is low. The CuO / carbon composite electrode material prepared by the preparation method of the present invention is applied to the perovskite solar cell, has good photoelectric conversion efficiency and has potential application prospects in the field of photoelectric devices.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a method for preparing a carbon composite electrode for improving the photoelectric performance and stability of a perovskite solar cell Background of the invention [0002] Perovskite solar cells thus have ABX 3 Perovskite-type organometallic halides (CH 3 NH 3 wxya 3 ) (X=Cl, Br, I) as a new type of photovoltaic device as a light-absorbing material. In 2009, Japanese scientist Miyasaka for the first time CH 3 NH 3 wxya 3 Introduced into solar cells as a sensitizer, a photoelectric conversion efficiency of 3.8% was obtained. Recently, the efficiency of perovskite solar cells has been increased to 23.7%. The most typical perovskite solar cells are mainly composed of five parts: conductive substrate (FTO and ITO glass), electron collection layer (TiO 2 , ZnO, SnO 2 etc.), perovskite light-absorbing layer (the main material is CH 3 NH 3 wxya 3 ), hole transport layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCY02E10/549H10K85/50H10K30/81
Inventor 徐婷婷王瑞齐陈立新万志孙雪琳
Owner NORTHWESTERN POLYTECHNICAL UNIV