Preparation method of perovskite type solar cell modified by organic/inorganic hybrid hole transport layer

A hole transport layer and solar cell technology, applied in the field of solar cells, can solve problems such as poor energy conversion efficiency, poor stability, and poor visible light absorption rate, and achieve improved efficiency, increased air stability, and good photoelectric performance of the device Effect

Inactive Publication Date: 2016-10-26
SUZHOU UNIV
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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 poor stability, poor visible light absorptivity, and poor energ

Method used

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  • Preparation method of perovskite type solar cell modified by organic/inorganic hybrid hole transport layer

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Embodiment 1

[0023] A method for preparing a perovskite solar cell modified by an organic-inorganic hybrid hole transport layer, the preparation steps are as follows:

[0024] (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;

[0025] (2) Dilute 369 μL of titanium isopropoxide into 2.53 mL of isopropanol, add 35 μL of 0.026 mol / L hydrochloric acid aqueous solution into 2.53 mL of isopropanol, and mix the two solutions to prepare The titanium dioxide precursor solution is processed on the conductive transparent electrode by spin coating, inkjet printing or roll-to-roll printing, and then annealed in dry air at 500°C for 2 hours to obtain an electron transport layer with a thickness of 50nm;

[0026] (3) Process the perovskite precursor solution in (1) onto the electron transport layer in (2) by spin coating, inkjet printing, or roll-to-roll printing, and then anneal in nitrogen at ...

Embodiment 2

[0031] The difference between Example 2 and Example 1 is that the volume ratio of solution C and solution D in step (4) is 13.0%. The rest of the steps are the same.

Embodiment 3

[0033] The difference between Example 3 and Example 1 is that the volume ratio of solution C and solution D in step (4) is 16.7%. The rest of the steps are the same.

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Abstract

The invention provides a preparation method of a perovskite type solar cell modified by an organic/inorganic hybrid hole transport layer. The preparation method comprises the steps of solving methylammonium iodide and lead chloride into dimethylformamide, thereby preparing perovskite precursor; dissolving titanium isopropylate into isopropanol for obtaining a solution, adding hydrochloric acid solution into isopropanol for obtaining another solution, mixing the two solutions for obtaining titanium dioxide precursor, then applying the titanium dioxide precursor on a substrate, then performing annealing for obtaining a cured electron transport layer; applying the perovskite precursor on the electron transport layer, and then performing annealing for obtaining a cured photosensitive layer; dissolving copper salt into 2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene solution, thereby obtaining an organic/inorganic hybrid hole transport layer; and machining metal electrodes on the hole transport layer, thereby obtaining the perovskite type solar cell modified by the organic/inorganic hybrid hole transport layer. The perovskite type solar cell prepared according to the preparation method has high energy conversion efficiency and high photovoltaic characteristic.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a method for preparing a perovskite solar cell modified by an organic-inorganic hybrid hole transport layer. Background technique [0002] Perovskite solar cells have been developed rapidly in recent years because of their high efficiency, stability, and simple preparation process. Many of their advantages are favored, such as strong broad absorption spectrum, long carrier mobility, and long In addition to the mesoporous structure that has received much attention, the planar structure has also been well developed, and it shows its good application prospects. [0003] At present, although perovskite thin-film solar cells have excellent performance, they have not reached an ideal state in terms of stability, especially commonly used organic electron and hole transport materials are sensitive to air and are easy to decompose, which affects the service life of the battery. and efficient a...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/341H10K30/151Y02E10/549Y02P70/50
Inventor 廖良生王照奎李萌
Owner SUZHOU UNIV
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