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High-efficiency perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as inability to mass-produce, and achieve the effect of improving time stability and conversion rate

Inactive Publication Date: 2016-02-03
杨秋香
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned inventions gradually promote the industrialization of perovskite solar cells. However, they cannot be mass-produced at present because their efficiency is still below 15%. Finding a higher-efficiency solar cell structure is the goal of people's concerted efforts.

Method used

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  • High-efficiency perovskite solar cell and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0028] 1) Use ITO conductive glass as the light-transmitting / transparent electrode layer;

[0029] 2) Using spraying thermal decomposition technology to prepare NiO layer on the surface of conductive glass, thickness 35nm;

[0030] 3) Prepare a mixed solution of nickel acetone hexanoate, lithium acetate, and magnesium acetate tetrahydrate according to the molar ratio of 1:1:5, spin-coat on the transition layer, and dry at 300°C to prepare an electron transport layer with thickness Control at 10nm;

[0031] 4) Preparation of light-absorbing layer:

[0032] a. Prepare PbI2 solution, the concentration is 3.0Mol / L, and the solvent is dimethylformamide;

[0033] b. Preparation of CH3NH3I solution: concentration 5mg / mL, solvent is isopropanol;

[0034] The perovskite material is synthesized in situ by the solution method: the PbI2 solution is spin-coated on the electron transport layer, dried, and then put into the CH3NH3I solution to soak to grow the perovskite material to obtain the perovsk...

Embodiment 2

[0043] 1) Use aluminum-zinc oxide AZO conductive glass as the light-transmitting / transparent electrode layer;

[0044] 2) Using spraying thermal decomposition technology to prepare NiO2 layer on the surface of conductive glass; thickness 50nm;

[0045] 3) Prepare a mixed solution of nickel acetone hexanoate, lithium acetate, and magnesium acetate tetrahydrate in a molar ratio of 1:1:3, spin-coat on the transition layer, and dry at 400°C to prepare an electron transport layer; thickness 60nm;

[0046] 4) Preparation of light-absorbing layer:

[0047] a. Prepare PbI2 solution, the concentration is 0.5Mol / L, the solvent is dimethylformamide;

[0048] b. Preparation of CH3NH3I solution: concentration 10mg / mL, solvent is isopropanol;

[0049] The perovskite material is synthesized in situ by the solution method: first spin-coated PbI2 solution on the electron transport layer, then put it in the CH3NH3I solution to soak and grow the perovskite material to obtain the perovskite light-absorbing...

Embodiment 3

[0058] 1) Use fluorinedopedtinoxide (FTO) conductive glass as the light-transmitting / transparent electrode layer;

[0059] 2) Using spraying thermal decomposition technology to make NiO2 layer on the surface of conductive glass; thickness 6nm;

[0060] 3) Prepare a mixed solution of nickel acetone hexanoate, lithium acetate, and magnesium acetate tetrahydrate in a molar ratio of 1:1:10, spin-coated on the transition layer, and dry at 350°C to prepare an electron transport layer; thickness 98nm;

[0061] 4) Preparation of light-absorbing layer:

[0062] a. Prepare PbI2 solution, the concentration is 2.3Mol / L, the solvent is dimethylformamide;

[0063] b. Preparation of CH3NH3I solution: concentration 7.5mg / mL, solvent is isopropanol;

[0064] The perovskite material is synthesized in situ by the solution method: first spin-coated PbI2 solution on the electron transport layer, then put it in the CH3NH3I solution to soak and grow the perovskite material to obtain the perovskite light-absor...

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Abstract

The invention discloses a high-efficiency perovskite solar cell and a preparation method thereof. The perovskite solar cell comprises a light transmission / transparent electrode layer, a transition layer, an electron transport layer, a light absorption layer, an electron absorption layer, a hole transport layer, and a top electrode which are successively stacked. The transition layer is an oxide of nickel. The electron transport layer is a quaternary oxide. The light absorption layer is a material provided with perovskite structure. The electron absorption layer is formed by fullerene derivative. The hole transport layer is formed by a ternary oxide. The top electrode is formed by a material with good conductivity. The high-efficiency perovskite solar cell effectively utilizes the performance of the perovskite material, is increased in the photoelectric converting efficiency by over 20 percent, and is suitable for batch production.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, in particular to a perovskite solar cell with a heterojunction structure and high photoelectric conversion efficiency and a preparation method thereof. Background technique [0002] Solar energy is inexhaustible and inexhaustible. People already use the sun's thermal energy for heating and its light energy to generate electricity. With the depletion of fossil energy such as oil and coal, green, safe and renewable solar energy is a feasible solution to human energy crisis and an ideal solution to environmental pollution. At present, people mainly use crystalline silicon to manufacture photovoltaic materials, which has high cost and heavy pollution. At present, it mainly relies on state subsidies to promote. Higher photoelectric conversion efficiency and lower manufacturing costs are prerequisites for the full promotion of photovoltaic power generation. Therefore, solar cells with both hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K85/215H10K30/40H10K30/82H10K30/00Y02E10/549Y02P70/50
Inventor 杨秋香
Owner 杨秋香
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