Perovskite solution with controllable and adjustable operation time window, cell, preparation method and application

An operating time, perovskite technology, applied in applications, circuits, photovoltaic power generation, etc., can solve the problems of fast nucleation and crystallization rate, narrow processing time window, inability to apply perovskite film deposition, etc. The effect of high photoelectric conversion efficiency and novel preparation method

Active Publication Date: 2021-11-12
HUBEI UNIV
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Problems solved by technology

However, the nucleation and crystallization rate of this ink is very fast, and the processing time window is very narrow, which cannot be applied to the deposition of large-area perovskite films.

Method used

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  • Perovskite solution with controllable and adjustable operation time window, cell, preparation method and application
  • Perovskite solution with controllable and adjustable operation time window, cell, preparation method and application
  • Perovskite solution with controllable and adjustable operation time window, cell, preparation method and application

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preparation example Construction

[0036] The method for preparing the above-mentioned perovskite solution, the preparation method comprises the following steps:

[0037] First, put the perovskite single crystal obtained by inversion temperature crystallization in advance or the methyl iodide and lead iodide powder prepared by stoichiometric ratio in a methylamine atmosphere to obtain a viscous yellow perovskite precursor solution, or Dissolve the perovskite single crystal obtained by inversion temperature crystallization in advance or the methyl iodide and lead iodide powder prepared by stoichiometric ratio in the solution of methylamine ethanol to obtain a viscous yellow perovskite precursor solution, and then, After using a coordination solvent and acetonitrile to mix evenly, dilute the perovskite precursor solution to obtain a perovskite ink, wherein the coordination solvent is selected from one or more of DMSO, NMP, and 4-TBP.

[0038] A method for preparing a gold electrode perovskite solar cell with a fi...

Embodiment 1

[0052] 1) Preparation of electron transport layer (dense layer)

[0053] Add 369ul of titanium tetraisopropoxide and 35ul of 2M hydrochloric acid solution into 5.06ml of absolute ethanol solution, and after stirring, apply it on a clean FTO conductive glass by spin coating, after 10min annealing temperature Relatively dense TiO is formed after 150°C 2 thin film with a thickness of about 30nm.

[0054] 2) Preparation of electron transport layer (mesoporous layer)

[0055] Dilute the 18-NRT titanium oxide mesoporous slurry with absolute ethanol to 15wt.%. After fully stirring the diluted solution for 5 hours, take 60ul spin coating on the film in step 1), and anneal at 80°C for 10 Minutes later, put it into a muffle furnace for calcination at 500 °C for 1 h, then cool to room temperature to form a layer of TiO 2 The mesoporous layer is about 100nm thick.

[0056] 3) Preparation of perovskite single crystal

[0057] PbI 2 Dissolve MAI powder in γ-GBL solution at a molar rat...

Embodiment 2

[0068] Embodiment 2 is different from embodiment 1 in that:

[0069] 1) In the preparation of the electron transport layer (dense layer), ITO conductive glass is used to form relatively dense ZnO 2 thin film with a thickness of about 50 nm.

[0070] 2) In the preparation of the electron transport layer (mesoporous layer), the final thickness obtained is about 140 nm.

[0071] 3) In the preparation of perovskite single crystal, MAPbCl was prepared 3 precursor solution.

[0072] 4) In the preparation of the perovskite ink, the mass concentration of methylamine ethanol was 41wt., put it into the ultrasonic machine for 1h until the solution became clear. Then add a mixed solution of 4-TBP and NMP with a certain volume ratio prepared according to actual deposition processing requirements. The perovskite ink with the corresponding processing time window is formulated after being fully mixed. The volume ratio of methylamine ethanol solution to acetonitrile is 1:0.8. The volume ...

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Abstract

The invention discloses a perovskite solution with a controllable and adjustable operation time window, a cell, a preparation method and application, and belongs to the field of perovskite solar cells. The perovskite solution comprises perovskite ABX3, an acetonitrile solvent and a coordination type solvent, A site is a methylamine ion, B site is a lead ion, X site is a halide ion, and the coordination type solvent is selected from dimethyl sulfoxide, N-methyl pyrrolidone and 4-tert-butylpyridine. The preparation method comprises the following steps: placing perovskite single crystals or iodine methylamine and lead iodide powder prepared by stoichiometric ratio in a methylamine atmosphere to obtain a yellow perovskite precursor solution, or dissolving the perovskite single crystals or iodine methylamine and lead iodide powder prepared by stoichiometric ratio in a methylamine ethanol solution to obtain a viscous yellow perovskite precursor solution, and then, uniformly mixing the coordination solvent and acetonitrile to obtain the perovskite ink. The invention also provides the perovskite cell, the preparation method and the application. The ink disclosed by the invention can realize adjustment of a processing time window and is extremely high in industrial applicability.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells, and more specifically relates to a perovskite solution, a battery and a preparation method with a controllable and adjustable operating time window. Background technique [0002] With the increasing shortage of energy in the world, solar energy, as a clean energy, is gradually valued and developed by human beings. Among many solar cell product categories, perovskite solar cells stand out because of their advantages such as tunable band gap, high light absorption coefficient, and long carrier diffusion length. [0003] The photoelectric conversion efficiency of organic-inorganic hybrid solar cells has grown from the initial 3.8% to the current 25.2%. However, there are still many unsolved problems in the process of developing from laboratory scale to industrial large-area cells and modules. . Taking the spraying method as an example, in the process of preparing perovskite light-absorbing la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C09D11/38H01L51/42H01L51/48
CPCC09D11/30C09D11/38H10K71/12H10K71/40H10K30/152H10K30/151H10K30/15H10K30/10Y02E10/549
Inventor 吴聪聪明逸东梁子辉李矜李静王世敏
Owner HUBEI UNIV
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