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Perovskite material, method for preparing same and solar cell device with perovskite material

A perovskite material and perovskite technology, applied in the fields of preparation, solar cell devices, and perovskite materials, can solve the problems of low efficiency and poor stability of perovskite solar cells

Active Publication Date: 2019-02-19
SHANGHAI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcoming of the prior art, the object of the present invention is to provide a kind of perovskite material, preparation method and solar cell device thereof, for solving the problem of low efficiency and poor stability of perovskite solar cells in the prior art

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  • Perovskite material, method for preparing same and solar cell device with perovskite material
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[0036] The preparation method of the perovskite material provided by the present invention includes: providing a precursor solution of perovskite, and forming the perovskite material through the precursor solution.

[0037] In the preparation method of the perovskite material provided by the present invention, in the precursor solution, the concentration of the precursor solution is selected from 0.8M-1.4M, 0.8M-1.1M, 1.1M-1.3M, 1.3M-1.4M , preferably 1.1M-1.3M.

[0038] In the preparation method of the perovskite material provided by the present invention, the halide is added to the mixed reagent, heated and stirred to obtain the precursor solution; the halide is selected from the group consisting of dimethyl ammonium iodide, dimethyl ammonium bromide, di Methylammonium chloride, methylammonium iodide, methylammonium bromide, methylammonium chloride, formamidine hydroiodide, formamidine hydrobromide, formamidine hydrochloride, cesium iodide, bromide Cesium, cesium chloride, ...

Embodiment 1

[0061] MA 0.905 DMA 0.07 Cs 0.025 PB 3 The preparation method of perovskite thin film, concrete steps are:

[0062] Take by weighing methyl ammonium iodide 0.1871g (MAI, 1.1765mmol), dimethyl ammonium iodide 0.0157g (DMAI, 0.091mmol), cesium iodide 0.0084g (CsI, 0.0325mmol) and lead iodide 0.5993g (1.3 mmol) was added to a 4ml glass bottle containing 1ml DMF and DMSO mixed reagent (volume ratio 4:1), stirred at 70°C for 1 hour, cooled, and filtered with a 0.22um polytetrafluoroethylene filter head After filtering, the resulting solution is a perovskite precursor solution. Place the nickel oxide substrate on the spin coater, drop the perovskite precursor solution on the nickel oxide substrate with a 200ul pipette gun, close the lid, and start spin coating. The spin coating parameters are 1000rpm, 10s; 4000rpm, 30s, 15 seconds before the end of the spin-coating process, use a 1ml pipette gun to measure 600ul of toluene as an anti-solvent, and quickly drop it on the rotating...

Embodiment 2

[0064] MA 0.88 DMA 0.07 Cs 0.05 PB 3 The preparation method of perovskite thin film, concrete steps are:

[0065]Take by weighing methyl ammonium iodide 0.1819g (MAI, 1.144mmol), dimethyl ammonium iodide 0.0157g (DMAI, 0.091mmol), cesium iodide 0.0169g (CsI, 0.065mmol) and lead iodide 0.5993g (1.3 mmol) was added to a 4ml glass bottle containing 1ml DMF and DMSO mixed reagent (volume ratio 4:1), stirred at 70°C for 1 hour, cooled, and filtered with a 0.22um polytetrafluoroethylene filter head After filtering, the resulting solution is a perovskite precursor solution. Place the nickel oxide substrate on the spin coater, drop the perovskite precursor solution on the nickel oxide substrate with a 200ul pipette gun, close the lid, and start spin coating. The spin coating parameters are 1000rpm, 10s; 4000rpm, 30s, 15 seconds before the end of the spin-coating process, use a 1ml pipette gun to measure 600ul of toluene as an anti-solvent, and quickly drop it on the rotating subs...

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Abstract

The invention relates to the field of new energy, in particular to a perovskite material, a method for preparing the same and a solar cell device with the perovskite material. A molecular formula of perovskite in the perovskite material is ABX<3>, wherein the A is selected from C<1-x-y>E<x>F<y>, the C is selected from MA and / or FA, the E is selected from DMA, the F is selected from one or a plurality of types of Cs, Rb and K, the B is selected from Pb and / or Sn, and the X is selected from one or a plurality of types of I, Br and Cl. The perovskite material, the method and the solar cell devicehave the advantages that the perovskite material is excellent in stability under atmospheric conditions, processes for preparing the perovskite material are simple and are convenient to implement, and the perovskite material and the solar cell device can be produced on a large scale; the prepared perovskite solar cell device is high in photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a perovskite material, a preparation method and a solar cell device thereof. Background technique [0002] With the rapid development of the global economy and the continuous growth of the population, the consumption of fossil fuels has also increased significantly. In addition to the consumption of fuels that are in short supply, they have also brought serious threats to the environment we depend on for survival. Therefore, vigorously developing new types of green energy has become a more urgent task for human survival and development. Due to its low cost and high efficiency, halide perovskite has recently been widely studied as a very promising solar cell absorber material. [0003] Since Miyasaka used organometallic perovskites in dye-sensitized solar cells and obtained 3.8% efficiency in 2009, perovskite solar cell devices have developed rapidly, but because perovskite materials are...

Claims

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Application Information

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IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCH10K71/12H10K85/30H10K30/30Y02E10/549
Inventor 宁志军陈昊彭子键
Owner SHANGHAI TECH UNIV
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