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Compound, perovskite thin-film solar cell and preparation method of perovskite thin-film solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems that are difficult to balance high efficiency and high stability of cells, and affect the industrialization process of perovskite solar cells, so as to improve carrier transport performance, Improvement of photoelectric conversion efficiency and stability, suppression of non-radiative recombination

Active Publication Date: 2022-01-21
义乌协同创新研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has greatly affected the process of industrialization of perovskite solar cells
The current perovskite solar cell preparation technology is often difficult to balance the high efficiency and high stability of the cell.

Method used

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  • Compound, perovskite thin-film solar cell and preparation method of perovskite thin-film solar cell
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  • Compound, perovskite thin-film solar cell and preparation method of perovskite thin-film solar cell

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preparation example Construction

[0041] The preparation method of perovskite thin film solar cell of the present invention comprises the following steps:

[0042] Precursor solutions of the chemical components of the transport layer, the perovskite light-absorbing layer 3 and the modification layer 4 are respectively prepared, and then coating and annealing are performed on the base layer 1 in sequence, and finally the modification layer 4 is coated by an evaporation process or a printing process. Or prepare the top electrode layer 6 on a transport layer.

[0043] Preferably, the precursor solution of the chemical composition of the modification layer 4 is a halogenated fused heterocyclic ammonium salt solution, and the concentration of the halogenated fused heterocyclic ammonium salt solution is 0.01wt%-1wt%.

[0044] The halogenated condensed heterocyclic ammonium salt solution comprises a halogenated condensed heterocyclic ammonium salt and an organic solvent, and the organic solvent includes one or more of ...

Embodiment 1

[0047] Such as figure 1 As shown, the perovskite thin-film solar cell in this embodiment sequentially includes a base layer 1, a first transport layer 2, a perovskite light absorbing layer 3, a modification layer 4, a second transport layer 5 and a top electrode layer 6. The chemical composition of layer 4 is indolylethylammonium iodide, and its chemical formula is: C 8 h 6 N-C 2 h 4 -NH 3 -I.

[0048] The base layer 1 of the present embodiment is indium tin oxide glass (ITO), and the chemical composition of perovskite light absorbing layer 3 is 1.04mmol FAI, 0.065mmol CsI, 0.195mmol MABr and 1.3mmol PbI 2 (FA 0.8 MA 0.05 Cs 0.15 PB 2.55 Br 0.45 ), the top electrode layer 6 is a metal electrode, and the specific metal type is gold.

[0049] The preparation method of the perovskite thin film solar cell of the present embodiment comprises the following steps:

[0050] 1) ITO glass is selected as the base layer 1, and the base layer 1 of the ITO glass is ultrasonicall...

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Abstract

The invention relates to a compound, a perovskite thin-film solar cell and a preparation method of the perovskite thin-film solar cell. The solar cell comprises a substrate layer, a perovskite light absorption layer, two carrier transport layers and a top electrode layer, wherein the perovskite light absorption layer is located between the two carrier transport layers; the solar cell further comprises a modification layer which is located between the perovskite light absorption layer and one transmission layer; and the chemical component of the modification layer comprises halogenated fused heterocyclic ammonium salt. According to the halogenated fused heterocyclic ammonium salt modification layer of the perovskite thin-film solar cell, an extra halogen source can be introduced on the surface of the perovskite light absorption layer, so that defects on the surface of the perovskite light absorption layer are effectively passivated, non-radiative recombination of current carriers is inhibited, and the transmission performance of the current carriers is improved; and meanwhile, the solar cell can tolerate the temperature under 100 DEG C in the preparation process or the working process of a finished product. The solar cell has high photoelectric conversion efficiency and stability.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a compound, a perovskite thin-film solar cell and a preparation method thereof. Background technique [0002] In recent years, halide perovskite materials have attracted much attention, and their unique properties and compositional diversity provide unlimited development space for academia and industry. At present, the photoelectric conversion efficiency record of perovskite solar cells has reached 25.5%, showing great potential to compete with crystalline silicon solar cells. Halide perovskites have become the most promising next-generation photovoltaic materials because of their superior photoelectric performance and low cost. [0003] However, solution-processed perovskite films are usually polycrystalline, which means they contain a large number of defects, especially at the perovskite grain boundaries and surfaces. These defects not only cause the recombination of carr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/48H01L51/44
CPCH10K85/00H10K10/00H10K30/20H10K30/10Y02E10/549
Inventor 周欢萍张钰宰华超
Owner 义乌协同创新研究院
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