Perovskite solar cell using titanium oxide and barium titanate composite material as electron transfer layer and its preparation method

A technology of electron transport layer and solar cell, which is applied in the field of solar cells, can solve the problems of poor contact between the perovskite light absorption layer and the electron transport layer, and the inability to form the perovskite light absorption layer, so as to improve the photoelectric characteristics and improve Effects of Microscopic Morphology and Performance Improvement

Inactive Publication Date: 2018-07-13
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a perovskite solar cell and its preparation method using titanium oxide and barium titanate composite material as the electron transport layer, aiming to solve the problem of perovskite light absorbing layer and The problem of poor contact of the electron transport layer and the inability of the perovskite light absorbing layer to form a large grain film

Method used

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  • Perovskite solar cell using titanium oxide and barium titanate composite material as electron transfer layer and its preparation method
  • Perovskite solar cell using titanium oxide and barium titanate composite material as electron transfer layer and its preparation method
  • Perovskite solar cell using titanium oxide and barium titanate composite material as electron transfer layer and its preparation method

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Embodiment 1

[0027] ① First, clean the FTO conductive glass, put the glass in toluene, acetone, deionized water, isopropanol and ultrasonically treat it for 20 minutes, and then use nitrogen to dry the glass for later use;

[0028] ②Configure 0.15mol / L titanium acetylacetonate solution, the solvent is n-butanol, stir the titanium acetylacetonate solution evenly;

[0029] ③ Spin-coat the titanium acetylacetonate solution in step ② on the spare FTO conductive glass in step ① using a homogenizer, then use a heating plate to heat the glass substrate at 130°C for 5 minutes, and then use a muffle furnace to The glass substrate was heated at 500°C for 30 minutes, and after cooling, an electron transport layer with only titanium oxide was formed, with a thickness of about 60 nanometers;

[0030] ④ Configure the perovskite solution. The specific operation is: mix DMF (dimethylformamide) and DMSO (dimethyl sulfoxide) at a volume ratio of 9:1 and stir evenly, then add CH 3 NH 3 I and PbI 2 Mix and...

Embodiment 2

[0035] ① First, clean the FTO conductive glass, put the glass in toluene, acetone, deionized water, isopropanol in turn and ultrasonically treat it for 20 minutes, then use nitrogen to dry the glass for later use;

[0036] ② Configure 0.15mol / L titanium acetylacetonate solution, the solvent is n-butanol. Stir the titanium acetylacetonate solution evenly;

[0037]③ Spin-coat the titanium acetylacetonate solution in step ② on the spare FTO conductive glass in step ① using a homogenizer, then use a heating plate to heat the glass substrate at 130°C for 5 minutes, and then use a muffle furnace to The glass substrate was heated at 500°C for 30 minutes, cooled and then used for later use;

[0038] ④ Configure 0.015mol / L Ba(NO 3 ) 2 aqueous solution and Ba(NO 3 ) 2 The solution was stirred evenly.

[0039] ⑤Take 100mL of Ba(NO 3 ) 2 The solution was placed in a beaker, and the glass substrate spared in step ③ was soaked in Ba(NO 3 ) 2 solution for 30 seconds, then use deion...

Embodiment 3

[0045] Embodiment 3 is basically the same as Embodiment 2, the difference is:

[0046] After step ⑤, repeat step ⑤ again, and the thickness of the obtained electron transport layer is 60 nanometers.

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Abstract

The invention discloses a perovskite solar cell using titanium oxide and barium titanate composite material as an electron transfer layer and its preparation method, and belongs to the technical fieldof a solar cell. The perovskite solar cell is orderly composed of a FTP conductive glass, an electron transfer layer formed by a compact TiO2 thin film and a BaTiO3 thin film, a CH3NH3PbI3 light absorbing layer, a 2, 2', 7, 7'-tetra[N, N-bis(4-methoxy- phenyl)amino]-9, 9'-spirobifluorene hole transfer layer and Ag electrode. The invention adopts the BaTiO3 / TiO2 composite material as the electrontransfer layer of the perovskite solar cell; through the similar property of the BaTiO3 and CH3NH3PbI3 perovskite material crystal structure, compacter and larger-crystal-grain perovskite light absorbing material combined with the electron transfer layer is guided to grow; the microstructure of the contact interface between the electron transfer layer and the perovskite layer is improved, the current-illumination characteristic of the perovskite battery cell is further promoted; the solar cell performance is further improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a perovskite solar cell using titanium oxide and barium titanate composite material as an electron transport layer and a preparation method thereof. Background technique [0002] With the continuous development of human society, people's demand for energy is increasing day by day. However, with the continuous consumption of non-renewable energy such as traditional fossil energy, especially oil, natural gas, coal mine and other energy resources that are indispensable in human life are approaching depletion. Therefore, mankind urgently needs an effective and cheap renewable energy to make up for the possible energy crisis. Solar cells can convert solar energy into electrical energy, and solar energy is inexhaustible. Therefore, the field of solar cell technology has attracted much attention. [0003] In recent years, an organic-inorganic hybrid perovskite material...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/46H01L51/42B82Y30/00
CPCB82Y30/00H10K71/00H10K30/35H10K2102/00Y02E10/549
Inventor 卢革宇那日苏康博南孙鹏刘方猛梁喜双闫旭
Owner JILIN UNIV
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