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Preparation method of cathode and anode-modified perovskite solar cell

A solar cell and perovskite-type technology, applied in the field of solar cells, can solve problems such as poor visible light absorption rate, poor energy conversion efficiency, and large thickness, and achieve the effects of increasing fill factor, improving device efficiency, and simple preparation process

Inactive Publication Date: 2016-04-13
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Technical problem to be solved: In view of the shortcomings of existing perovskite solar cells such as large thickness, poor visible light absorption rate, and poor energy conversion efficiency, the present invention provides a method for preparing a perovskite solar cell modified by cathode and anode

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  • Preparation method of cathode and anode-modified perovskite solar cell
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Examples

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Embodiment 1

[0026] A method for preparing a perovskite solar cell modified by a cathode and an anode, the preparation steps are as follows:

[0027] (1) Dissolve methylammonium iodide and lead chloride in dimethylformamide at a molar ratio of 3:1, and stir for 5 hours to prepare a 30wt% perovskite precursor;

[0028] (2) After dissolving Ag nanoparticles in ethanol, and then miscible with PEDOT:PSS, the solution was processed on the ITO glass substrate by rotating at 4500rpm for 40s, and then annealed in air at 100°C for 20min to obtain a thickness of The cured anode modification layer of 50nm, wherein the weight ratio of Ag nanoparticles, ethanol, PEDOT:PSS is 3:7:50, and the particle size of Ag nanoparticles is 40-50nm;

[0029] (3) The perovskite precursor solution in (1) was processed on the anode modification layer in (2) by rotating at 4000rpm for 40s, and then annealed in nitrogen at 100°C for 1h to obtain a cured layer with a thickness of 300nm. photosensitive layer;

[0030] (4...

Embodiment 2

[0034] A method for preparing a perovskite solar cell modified by a cathode and an anode, the preparation steps are as follows:

[0035] (1) Dissolve methylammonium iodide and lead chloride in dimethylformamide at a molar ratio of 3:1, and stir for 5 hours to prepare a 30wt% perovskite precursor;

[0036] (2) After dissolving Ag nanoparticles in ethanol, and then miscible with PEDOT:PSS, the solution was processed on the ITO glass substrate by rotating at 4500rpm for 40s, and then annealed in air at 100°C for 20min to obtain a thickness of The cured anode modification layer of 50nm, wherein the weight ratio of Ag nanoparticles, ethanol, PEDOT:PSS is 3:7:50, and the particle size of Ag nanoparticles is 40-50nm;

[0037] (3) The perovskite precursor solution in (1) was processed on the anode modification layer in (2) by rotating at 4000rpm for 40s, and then annealed in nitrogen at 100°C for 1h to obtain a cured layer with a thickness of 300nm. photosensitive layer;

[0038] (4...

Embodiment 3

[0042] A method for preparing a perovskite solar cell modified by a cathode and an anode, the preparation steps are as follows:

[0043] (1) Dissolve methylammonium iodide and lead chloride in dimethylformamide at a molar ratio of 3:1, and stir for 5 hours to prepare a 30wt% perovskite precursor;

[0044] (2) After dissolving Ag nanoparticles in ethanol, and then miscible with PEDOT:PSS, the solution was processed on the ITO glass substrate by rotating at 4500rpm for 40s, and then annealed in air at 100°C for 20min to obtain a thickness of The cured anode modification layer of 50nm, the weight ratio of Ag nanoparticles, ethanol, PEDOT:PSS is 3:7:50, and the particle size of Ag nanoparticles is 40-50nm;

[0045] (3) The perovskite precursor solution in (1) was processed on the anode modification layer in (2) by rotating at 4000rpm for 40s, and then annealed in nitrogen at 100°C for 1h to obtain a cured layer with a thickness of 300nm. photosensitive layer;

[0046] (4) Proces...

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Abstract

The invention provides a preparation method of a cathode and anode-modified perovskite solar cell. The method comprises the following preparation steps: dissolving methyl ammonium iodide and lead chloride into dimethyl formamide to prepare a perovskite precursor solution; dissolving metal nano-particles into ethanol, mutually dissolving with PEDOT:PSS, carrying out processing on a substrate and then carrying out annealing to obtain a cured anode modifying layer; processing the perovskite precursor solution on the anode modifying layer, and then carrying out annealing to obtain a curved photosensitive layer; processing [6,6]-phenyl-C61-methyl butyrate on the photosensitive layer to obtain an electron transport layer; processing an organic material on the electron transport layer to obtain a cathode modifying layer; and processing a cathode electrode on the cathode modifying layer to obtain the cathode and anode-modified perovskite solar cell. The prepared cathode and anode-modified perovskite solar cell is high in energy conversion efficiency and good in photovoltaic characteristics.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a preparation method of a perovskite solar cell modified by cathode and anode. Background technique [0002] Perovskite solar cells have attracted widespread attention from scientific researchers all over the world due to their low cost and simple preparation process, and have become one of the most potential renewable energy sources. In 2009, Japanese researchers such as Miyasaka first reported organic-lead halides with a perovskite structure as photoelectric conversion materials. In just a few years, the energy conversion efficiency of perovskite solar cells has increased to more than 15%, showing great potential application prospects. [0003] At present, due to the limitation of film thickness, material properties and preparation process of perovskite thin-film solar cells, its thickness is usually about several hundred nanometers, which restricts its absorption of vis...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/81H10K30/00Y02E10/549
Inventor 廖良生王照奎李萌
Owner SUZHOU UNIV
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