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Preparation method of solar cell with pyrene-containing perfluorinated compound passivated perovskite thin film

A perfluorinated compound, solar cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problem of affecting the stability of perovskite solar cells, affecting the photoelectric performance of perovskite solar cells, and easily becoming the initial stage of perovskite decomposition. site, etc.

Active Publication Date: 2020-10-27
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the perovskite active layer of perovskite solar cells is mostly prepared by low-temperature solution method. There will be many defects on the surface and grain boundaries of the perovskite film obtained by this preparation method. The recombination center affects the photoelectric performance of perovskite solar cells, and it is easy to become the initial site of decomposition of perovskite, which affects the stability of perovskite solar cells

Method used

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  • Preparation method of solar cell with pyrene-containing perfluorinated compound passivated perovskite thin film
  • Preparation method of solar cell with pyrene-containing perfluorinated compound passivated perovskite thin film
  • Preparation method of solar cell with pyrene-containing perfluorinated compound passivated perovskite thin film

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A kind of solar cell containing pyrene perfluorinated compound passivation perovskite thin film, the specific structure is as follows figure 1 As shown; including FTO conductive glass 1, electron transport layer 2, perovskite active layer 3, hole transport layer 4, metal Au electrode 5 arranged in sequence from bottom to top; the structure of this solar cell is a positive solar cell;

[0034] The specific preparation steps of the above-mentioned solar cell containing pyrene perfluorinated compound passivation perovskite film are as follows:

[0035] S1. In an anhydrous and oxygen-free environment, dissolve 3.75 mg of 1-pyrene acetic acid and perfluorodecyl alcohol synthesis product (HFPA) in 5 ml of chlorobenzene and stir at room temperature for 2 hours. After filtering, the perfluorinated compound containing pyrene structure is obtained. solution; wherein, the specific preparation method of 1-pyreneacetic acid and perfluorodecyl alcohol synthesis is as follows: 1mmol o...

Embodiment 2

[0042] A kind of solar cell containing pyrene perfluorinated compound passivation perovskite thin film, the specific structure is as follows figure 1 As shown; including FTO conductive glass 1, electron transport layer 2, perovskite active layer 3, hole transport layer 4, metal Au electrode 5 arranged in sequence from bottom to top; the structure of this solar cell is a positive solar cell;

[0043] The specific preparation steps of the above-mentioned solar cell containing pyrene perfluorinated compound passivation perovskite film are as follows:

[0044]S1. In an anhydrous and oxygen-free environment, dissolve 1.25 mg of 1-pyrene acetic acid and perfluorodecyl alcohol synthesis product (HFPA) in 5 ml of chlorobenzene and stir at room temperature for 2 hours. After filtering, the perfluorinated compound containing pyrene structure is obtained. solution; wherein, the specific preparation method of 1-pyreneacetic acid and perfluorodecyl alcohol synthesis is as follows: 1mmol of...

Embodiment 3

[0051] Same as Example 1, except that, in the specific preparation steps of the solar cell containing the perovskite film passivated by pyrene perfluorinated compound, S1, 2.5mg HFPA was dissolved in 5ml chlorobenzene.

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Abstract

The invention discloses a preparation method of a solar cell with a pyrene-containing perfluorinated compound passivated perovskite thin film, and belongs to the technical field of perovskite solar cells. The preparation method comprises the following steps: uniformly dispersing a perfluorinated compound containing a pyrene structure into an anti-solvent in an anhydrous oxygen-free environment toobtain a perfluorinated compound solution containing the pyrene structure; S2, spin-coating the perovskite precursor solution on conductive glass deposited with an electron transport layer for 30-35 seconds, adding the perfluorinated compound solution containing the pyrene structure obtained in the step S1 in the spin-coating process, continuously spin-coating for 5-10 seconds, and annealing to form a perfluorinated compound modified perovskite thin film containing the pyrene structure; and then spin-coating a hole transport layer on the perfluorinated compound modified perovskite thin film containing the pyrene structure, and evaporating a metal electrode on the hole transport layer to obtain the solar cell containing the pyrene perfluorinated compound passivated perovskite thin film. Theperfluorinated compound containing the pyrene structure is introduced into the perovskite solar cell through an anti-solvent method, and the method is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of perovskite solar cells, in particular to a method for preparing a solar cell with a passivated perovskite film containing a pyrene perfluorinated compound. Background technique [0002] Organic-inorganic hybrid perovskite materials have the advantages of adjustable band gap, large light absorption coefficient, and high carrier mobility, so they are used in the field of photovoltaics. Since the advent of perovskite solar cells in 2009, they have received extensive attention from scholars all over the world. [0003] At present, the perovskite active layer of perovskite solar cells is mostly prepared by low-temperature solution method. There will be many defects on the surface and grain boundaries of the perovskite film obtained by this preparation method. The recombination center affects the photoelectric performance of perovskite solar cells, and it is easy to become the initial site of decomposition of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K71/40H10K85/30H10K30/00Y02E10/549
Inventor 叶谦龙美娟郭鹏飞王洪强
Owner NORTHWESTERN POLYTECHNICAL UNIV
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