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Perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as limiting the application of flexible substrates, inability to perform stable output, and unfavorable mass production, so as to reduce body defects, speed up extraction and transmission, and suppress volume expansion effects Effect

Inactive Publication Date: 2017-11-03
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in order to make the amorphous TiO X Conversion to crystalline TiO 2 , dense layer and mesoporous layer TiO 2 There is a process of high-temperature sintering in the preparation of all of them, which not only consumes a lot of energy, but also greatly limits its application on flexible substrates, which is not conducive to large-scale production
Many research groups at home and abroad are committed to solving the problem of TiO 2 The problem of high-temperature calcination of the layer, however, most TiO obtained by low-temperature synthesis and processing 2 , often show many limitations, and its devices often contain a large number of defect states, resulting in low device efficiency and serious hysteresis effects, and cannot perform stable output

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  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof
  • Perovskite solar cell and preparation method thereof

Examples

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Embodiment 1

[0049] A perovskite solar cell with a structure of ITO / TiO 2 / PCBM / MA x FA 1-x PB 3 / Spiro-OMeTAD / Au (for the structure diagram see figure 1 ), the specific preparation steps are as follows:

[0050] 1) The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then dried on a hot table, followed by UV-ozone Treatment to remove residual organic matter on the surface;

[0051] 2) Prepare an electron transport layer on the pretreated transparent conductive substrate in step 1: use titanium tetrachloride as a precursor, weigh 2.3ml titanium tetrachloride and 8ml ethanol in an ice-water bath and mix them thoroughly, and mix the resulting mixture Transfer to 40ml of benzyl alcohol and react at 80°C for 9h; 3ml of the reaction product and diethyl ether were precipitated and washed at a volume ratio of 1:9, and the resulting produ...

Embodiment 2

[0058] A perovskite solar cell with a structure of ITO / TiO 2 / PCBM / MA x FA 1-x PB 3 / Spiro-OMeTAD / Au (for the structure diagram see figure 1 ), the specific preparation steps are as follows:

[0059] 1) The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then dried on a hot table, followed by UV-ozone Treatment to remove residual organic matter on the surface;

[0060] 2) Prepare an electron transport layer on the pretreated transparent conductive substrate in step 1: use titanium tetrachloride as a precursor, weigh 2ml and 8ml of ethanol in an ice-water bath and mix them thoroughly, and transfer the resulting mixture into 40ml of benzyl alcohol , reacted at 70°C for 9 hours; 3ml of the reaction product and diethyl ether were precipitated and washed at a volume ratio of 1:9, redispersed in 7ml of ethanol solvent, and...

Embodiment 3

[0067] A perovskite solar cell with a structure of ITO / TiO 2 / PCBM / MA x FA 1-x PB 3 / Spiro-OMeTAD / Ag (for the schematic diagram, see figure 1 ), the specific preparation steps are as follows:

[0068] 1) The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 15 minutes, blown dry with nitrogen, and then dried on a hot table, and then UV-ozone Treatment to remove residual organic matter on the surface;

[0069] 2) Prepare an electron transport layer on the pretreated transparent conductive substrate in step 1: use titanium tetrachloride as a precursor, weigh 2ml and mix it with 10ml ethanol in an ice-water bath, and transfer the resulting mixture into 50ml benzyl alcohol , reacted at 90°C for 8 hours; 3ml of the reaction product and diethyl ether were precipitated and washed at a volume ratio of 1:9, redispersed in 10ml of ethanol solvent, and the mass concentr...

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Abstract

The invention belongs to the field of a solar cell, and discloses a perovskite solar cell. The perovskite solar cell sequentially comprises a transparent conductive substrate, an electron transmission layer, an interface modification layer, a modified perovskite active layer, a hole transmission layer and a positive electrode, wherein the electron transmission layer is a nanometer TiO2 particle layer, and the interface modification layer is a fullerene derivative layer. A sol-gel method is employed, high-crystallization TiO2 nanoparticles are synthesized by taking titanium tetrachloride is used as a precursor, the TiO2 nanoparticles are applied to the perovskite solar cell by employing a low-temperature annealing process, a fullerene derivative is directly spin-coated on a surface of the obtained nanometer TiO2 particle layer for modification, the defects in TiO2 and perovskite are passivated, a novel perovskite synthesis path is employed, the obtained perovskite solar cell has high efficiency and does not have hysteresis effect under a low-temperature preparation process, and the device can be used for stable transmission; and moreover, the related preparation method is simple, is low in energy consumption and is suitable for promotion and application.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a perovskite solar cell and a low-temperature preparation method thereof. Background technique [0002] In recent years, with industrialization and increasing population, energy shortage has become the primary problem hindering economic development. In the face of dwindling fossil fuel supplies and unfavorable climate change, it is even more important to find viable renewable energy sources. Of all renewable energy sources, solar energy is one of the most promising. Currently, the photovoltaic market is dominated by solar cells made of crystalline silicon. However, even taking into account the sharp reduction in the price of crystalline silicon, the high production and installation costs lead to long payback times in most regions, reducing the economic viability of widespread use. Organic-inorganic composite perovskite solar cells have attracted much attention due to the...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K30/151H10K2102/00Y02E10/549
Inventor 王涛蔡飞龙杨丽燕李京海姚佳序
Owner WUHAN UNIV OF TECH
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