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Manufacturing method of methylamine lead iodine perovskite solar cell

A technology of solar cells and methylamine lead iodine, applied in the field of solar cells, can solve the problems of sensitivity to humidity, cumbersome preparation process, and inconspicuous performance improvement, and achieve a technology suitable for large-scale industrial manufacturing, simple preparation process, and outstanding cleaning ability Effect

Active Publication Date: 2017-11-17
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high polarity of the solvent, isopropanol has a certain destructive effect on the photosensitive layer and has poor performance. It is cumbersome to use it in the two-step preparation process and is sensitive to humidity, which is not conducive to industrial production. Second-butanol requires strict The cleaning and immersion optimization process, and it will consume too much methyl ammonium iodide in the preparation process, resulting in waste of raw materials, and the performance improvement is not outstanding

Method used

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  • Manufacturing method of methylamine lead iodine perovskite solar cell
  • Manufacturing method of methylamine lead iodine perovskite solar cell
  • Manufacturing method of methylamine lead iodine perovskite solar cell

Examples

Experimental program
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Embodiment 1

[0017] Such as figure 1 As shown, the thickness of the indium tin oxide (ITO) anode is 100 nm, and the ITO glass substrate is purchased from the manufacturer; the hole transport layer is poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT:PSS) Purchased from Heraeus Company in Germany, model: AI4083, dilute the purchased PEDOT:PSS with deionized water according to the volume ratio of 3:2, and then use the solution spin coating method to form a film, and then heat treatment in the air. The spin coating speed is 4000rpm , the spin coating time is 30-40s, the heat treatment temperature is 150°C, the heating time is 10-15 min, the thickness of the PEDOT:PSS film is 20-30 nm, and the photosensitive layer is CH 3 NH 3 PB 3 Perovskite thin films, made of methylammonium iodide (CH 3 NH 3 I), lead iodide (PbI 2 ) was dissolved in a mixed solvent of N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) at a molar ratio of 1.05:1 to form CH 3 NH 3 PB 3 Perovskite...

Embodiment 2

[0022] This embodiment is a further optimization of Embodiment 1.

[0023] The methylamine lead iodine perovskite solar cell of the present invention has a planar heterojunction inverted structure: ITO / PEDOT:PSS / photosensitive layer / PC 60 BM / Bphen / Ag, the thickness of the ITO anode is 100 nm, the sheet resistance is 10Ω / □, the thickness of the hole transport layer PEDOT:PSS is 30 nm, the film is formed by the solution spin coating method, and then thermally annealed in the air, spin coating The speed was 4000 rpm, the spin coating time was 30 s, the heating temperature was 150 °C, the heating time was 15 min, and the photosensitive layer was CH 3 NH 3 PB 3 Perovskite thin films prepared from methylamine iodide (CH 3 NH 3 I), lead iodide (PbI 2 ) 1.05:1 molar ratio dissolved in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) mixed solvent to form CH 3 NH 3 PB 3 Precursor solution, then made by spin-coating, sec-amyl alcohol cleaning process combined with annea...

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Abstract

The invention relates to the field of solar cells, and provides a manufacturing method of a methylamine lead iodine perovskite solar cell. A photosensitive layer is a methylamine lead iodine perovskite film. The methylamine lead iodine perovskite film is manufactured by the spin coating technology and the anti-solvent dropping and cleaning technology with combination of the solvent annealing technology. The spin coating technology refers to the process that a methylamine lead iodine perovskite CH3NH3PbI3 precursor solution is spin-coated on a PEDOT:PSS film. The anti-solvent cleaning technology refers to the process that the anti-solvent amyl alcohol is dropped in the process of spin-coating the CH3NH3PbI3 methylamine lead iodine perovskite precursor solution so that the perovskite is enabled to be quickly crystalized and precipitated, wherein the anti-solvent amyl alcohol is sec-amyl alcohol or tertiary amyl alcohol. The adopted preparation technology is simple so that the methylamine lead iodine perovskite solar cell of high efficiency and great repeatability without the hysteresis phenomenon can be prepared.

Description

technical field [0001] The invention relates to the field of solar cells. Background technique [0002] The perovskite solar cell is an organic-inorganic hybrid perovskite solar cell, and its photosensitive layer is an organic-inorganic hybrid perovskite material with the chemical formula ABX 3 (A:CH 3 NH 3 + ; B: Pb 2+ ;X:I — , Cl — and other halogen element ions), ABX 6 The unit cell structure is a three-dimensional octahedron, NH 3 CH 3 + At the vertices of the octahedron, Pb 2+ At the body center, the halogen element ions are at the face center. [0003] In recent years, in order to solve the increasingly severe energy and environmental problems, people have turned their attention to the development and utilization of new energy. Among various new energy sources, solar photovoltaic power generation is undoubtedly one of the most promising directions. Although traditional silicon-based solar cells have been industrialized, their cost performance cannot compet...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K71/40H10K85/30H10K30/20Y02E10/549
Inventor 郝玉英李仕奇刘红利孙钦军李战峰崔艳霞
Owner TAIYUAN UNIV OF TECH
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