Solar cell and preparation method thereof

A solar cell and electrode technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high price and limit the wide application of silicon cells, and achieve the effects of inhibiting charge recombination, inhibiting ion migration, and improving solubility.

Pending Publication Date: 2021-12-24
宁波欧达光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its high price limits the wide application of silicon cells
Currently, silicon solar cells, which dominate the commercial solar cell market, still cannot meet the requirements of low cost

Method used

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  • Solar cell and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S1: Clean the conductive substrate; use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean the conductive substrate for 20 minutes, and then dry it in a vacuum oven at 75°C; then use N 2 After drying, it was treated with an ultraviolet ozone cleaning machine for 10 minutes;

[0029]S2: Preparation of hole transport layer: Mix 1ml of 4-tert-butylpyridine, 2ml of Li-TFSI and 100ml of chlorobenzene to obtain mixture A, then add 2g of Spiro-OMeTAD; stir until completely dissolved to obtain Spiro-OMeTAD solution , ultrasonically spin coating the surface of the conductive substrate obtained in step S1, annealing at a temperature of 80° C. for 5 minutes, and naturally cooling to room temperature to form a Spiro-OMeTAD hole transport layer;

[0030] S3: Preparation of perovskite absorbing layer: mix 6g of methylamine iodine and 5g of PbI 2 Dissolve in 40ml of methylamine acetate (MAAc) and stir well; raise the temperature to 40°C, ad...

Embodiment 2

[0035] S1: Clean the conductive substrate; use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean the conductive substrate for 30 minutes, and then dry it in a vacuum oven at 85°C; then use N 2 After drying, it was treated with an ultraviolet ozone cleaning machine for 15 minutes;

[0036] S2: Preparation of hole transport layer: Mix 3ml of 4-tert-butylpyridine, 5ml of Li-TFSI and 100ml of chlorobenzene to obtain mixture A, then add 1.5g of Spiro-OMeTAD; stir until completely dissolved to obtain Spiro-OMeTAD Solution, ultrasonically spin-coated on the surface of the conductive substrate obtained in step S1, annealed at a temperature of 100° C. for 10 minutes, and naturally cooled to room temperature to form a Spiro-OMeTAD hole transport layer;

[0037] S3: Preparation of perovskite absorbing layer: mix 10g of methylamine iodine and 15g of PbI 2 Dissolve in 60ml of methylamine acetate (MAAc) and stir well; raise the temperature to 60...

Embodiment 3

[0042] S1: Clean the conductive substrate; use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean the conductive substrate for 25 minutes, and then dry it in a vacuum oven at 80°C; then use N 2 After drying, it was treated with an ultraviolet ozone cleaning machine for 12 minutes;

[0043] S2: Preparation of the hole transport layer: Mix 2ml of 4-tert-butylpyridine, 3ml of Li-TFSI and 100ml of chlorobenzene to obtain a mixture A, then add 1.6g of Spiro-OMeTAD, stir until completely dissolved to obtain Spiro- The OMeTAD solution is ultrasonically spin-coated on the surface of the conductive substrate obtained in step S1, annealed at a temperature of 90° C. for 7 minutes, and naturally cooled to room temperature to form a Spiro-OMeTAD hole transport layer;

[0044] S3: Preparation of perovskite absorbing layer: mix 8g of methylamine iodide and 12g of PbI 2 Dissolve in 55ml of methylamine acetate (MAAc) and stir well; raise the tempera...

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Abstract

The invention provides a solar cell and a preparation method thereof. The solar cell sequentially comprises a conductive substrate, a hole transport layer, a perovskite light absorption layer, an interface modification layer, an electron transport layer and a metal counter electrode from top to bottom; the conductive substrate is one of FTO conductive glass, ITO conductive glass or AZO conductive glass; the hole transport layer is a Spiro-OMeTAD hole transport layer; the perovskite absorption layer is a perovskite absorption layer doped with polyethylene oxide silicone oil and 1-aminoethyl-3-methylimidazolium bromide; the interface modification layer is a mixed layer of 2-naphthalenethiol, a silane coupling agent and tungsten phosphate; the electron transport layer is a mixed layer of Nb, Sn, Bi and protonated ethanolamine; and the metal counter electrode is Ag or Al. By modifying the electron transport layer, the perovskite absorption layer and the interface, the efficiency and the stability of the perovskite solar cell are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of battery preparation, in particular to a solar battery and a preparation method thereof. Background technique [0002] At present, with the continuous growth of the world population, the continuous innovation of industry and information technology, and the increasing demand and consumption of energy in human society, the development and utilization of diversified and clean renewable energy has attracted widespread attention from all over the world. Different from traditional energy sources such as coal, oil, and natural gas, solar energy, as the most abundant energy resource in the world, has become the focus of new energy due to its clean, renewable, and inexhaustible advantages. Solar cells are a green new technology that converts solar energy into electric energy on a large scale. The development of solar cells can alleviate environmental pollution, solve the traditional energy crisis, and promote susta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/12H10K85/30H10K30/10H10K30/00H10K30/88Y02E10/549
Inventor 谢小两刘宁
Owner 宁波欧达光电有限公司
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