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Perovskite solar cell and preparation method of modified layer of perovskite solar cell

A solar cell, perovskite-type technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of ineffective charge transfer and low NiO conductivity, achieve easy control, avoid reverse recombination, speed up separation effect

Active Publication Date: 2018-05-15
广东脉络能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the conductivity of NiO is low, and it cannot effectively carry out charge transport.

Method used

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  • Perovskite solar cell and preparation method of modified layer of perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Preparation of cobalt acetylacetonate modified perovskite solar cells

[0044] 1) Preparation of NiO hole transport layer and cobalt acetylacetonate modification layer

[0045] The specific steps are: dissolving 125 mg of nickel acetate in 5 ml of ethanol, and adding 30 ul of ethanolamine. After the dissolution is complete, filter. With 1mg / ml ethanol solution of cobalt acetylacetonate.

[0046]Spin-coat the prepared ethanol solution of nickel acetate onto the FTO glass, and anneal at a high temperature of 400°C. The thickness of the NiO thin film is about 50 nm.

[0047] Then take 90 ul of the prepared ethanol solution of cobalt acetylacetonate and spin-coat it on the NiO film, and spin the film for 30 seconds at a rotation speed of 5000 rpm. After finishing, the film is annealed at 300°C.

[0048] 2) Preparation of perovskite layer

[0049] Precursor PbI 2 , FAI (85%) and CsI (15%) are dissolved in gamma butyrolactone according to the concentration of...

Embodiment 2

[0059] Embodiment 2, prepare the molybdenum acetylacetonate modified perovskite solar cell

[0060] According to the steps of Example 1, only the ethanol solution of cobalt acetylacetonate used in step 1) was replaced with molybdenum acetylacetonate. The concentration of the modifying material was likewise 1 mg / ml.

[0061] In AM1.5, 100mW / cm 2 Test the J-V performance curve of the battery with KEITHLEY 4200 under light, such as figure 2 As shown in , the short-circuit current density of the battery is 22.16mA / cm 2 , the open circuit voltage is 0.95V, the fill factor is 0.75, and the photoelectric conversion efficiency is 15.92%.

Embodiment 3

[0062] Example 3, preparation of indium acetylacetonate modified perovskite solar cells

[0063] According to the steps of Example 1, only the ethanol solution of cobalt acetylacetonate used in step 1) was replaced with indium acetylacetonate. The concentration of the modifying material was likewise 2 mg / ml.

[0064] Test the J-V performance curve of the battery with KEITHLEY 4200 under AM1.5, 100mW / cm2 light, as shown in figure 2 As shown in , the short-circuit current density of the battery is 21.16mA / cm 2 , the open circuit voltage is 0.95V, the fill factor is 0.79, and the photoelectric conversion efficiency is 16.03%.

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Abstract

The invention discloses a perovskite solar cell and a preparation method of the modified layer of the perovskite solar cell. The perovskite solar cell includes an FTO, a hole transport layer, a modified layer, a perovskite layer, an electron transport layer, a BCP layer, and an electrode; the hole transport layer is made of NiO; and the modified layer is made of at least one material selected fromacetylacetone metal salt and acetate; and the modified materials can increase electron injection efficiency, change the work function of the hole transport layer, and increase the short-circuit current, fill factor, and open-circuit voltage of a device. The perovskite solar cell and the preparation method of the invention have the advantages of cheap materials, simplicity and easiness in control,and provide a new idea for the study of the interface behaviors of perovskite solar cells.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, and relates to a perovskite solar cell and a method for preparing a modified layer thereof. Background technique [0002] After the 21st century, with the rapid development of economy and society, human beings have an increasing demand for energy, and energy issues have become an important issue related to human survival. However, the traditional fossil fuels (coal, oil, natural gas) are being depleted day by day due to continuous mass consumption. The development of renewable new energy helps to alleviate the pressure on the world's energy and environment, and solar energy is the green renewable energy with the largest amount of resources and the most widely distributed. [0003] Solar cells can directly convert light energy into electrical energy, and the development of solar cells is one of the most effective ways to utilize solar energy. The solar battery is small in size, easy to move...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/12H10K30/15Y02E10/549
Inventor 李闻哲张翠苓范建东麦耀华李红亮马云平
Owner 广东脉络能源科技有限公司
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