Method for efficiently and stably preparing large-area perovskite solar cell based on porphyrin doping

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as the difficulty in suppressing the escape of organic cations in the perovskite film, so as to prevent cation escape, reduce the formation of defects, and ensure The effect of conversion efficiency

Active Publication Date: 2019-06-07
LANZHOU UNIVERSITY
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Problems solved by technology

In order to deal with the internal grain boundaries, it has been reported that at present, organic small molecules are used to modify perovskite films. Unfortu

Method used

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  • Method for efficiently and stably preparing large-area perovskite solar cell based on porphyrin doping
  • Method for efficiently and stably preparing large-area perovskite solar cell based on porphyrin doping
  • Method for efficiently and stably preparing large-area perovskite solar cell based on porphyrin doping

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[0028] Example 1

[0029] The present invention is further described with reference to the embodiments and accompanying drawings:

[0030] The invention provides a method for realizing efficient and stable large-area perovskite solar cell preparation based on porphyrin doping. Through the synthesis of various porphyrin derivatives, porphyrin molecules are successfully applied to perovskite solar cells. While ensuring the battery efficiency, the stability of the battery is greatly improved, and a new path is improved for the industrialization planning of perovskite solar cells.

[0031] Taking bisamino-p-tert-butyl porphyrin and monoamino porphyrin as examples, other porphyrins with different substituents have similar synthetic methods.

[0032] 1 Synthesis of bisamino-p-tert-butylporphyrin

[0033]

[0034] Synthesis of compound 2: 0.34g (2mmol) of 4-tert-butylbenzaldehyde and 0.53g (2mmol) of nitro-dipyrrolemethane were dissolved in 100ml of dichloromethane under nitroge...

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Abstract

The invention belongs to the field of preparation of perovskite solar cells, and particularly relates to a method for efficiently and stably preparing a large-area perovskite solar cell based on porphyrin doping. The method is mainly characterized by comprises the following steps that firstly, a simple and convenient porphyrin and porphyrin derivative synthetic path is provided; secondly, a traceamount of porphyrin or a trace number of porphyrin derivatives are added into a perovskite pecursor solution; thirdly, a black and dense perovskite film is formed; and fourthly, a perovskite layer iscoated with the perovskite film containing the porphyrin and porphyrin derivative in a spinning mode, a hole transporting layer and an electrode layer are coated in sequence, and the perovskite solarcell is formed. The method has the beneficial effects that the perovskite film is doped with ammonium-based porphyrin, effective crystallization control over the perovskite film is achieved successfully, because the ammonium-based porphyrin has the properties of a surfactant, the film formation property of the solution is improved after the ammonium-based porphyrin is added into the solution, andthe pinhole-free and uniform large-area perovskite film is prepared through a scrape-coating process.

Description

technical field [0001] The invention belongs to the field of preparation of perovskite solar cells, and in particular relates to a method for preparing efficient and stable large-area perovskite solar cells based on porphyrin doping. Background technique [0002] At present, the stability of perovskite solar cell devices and the production of large-area devices are still the biggest challenges to achieve commercial production. In previous reports, organic small molecule doping is usually used to passivate the perovskite grain boundary to improve stability, but such a method often leads to a decrease in the efficiency of the battery device, especially the preparation of large-area high-quality perovskite films cannot be achieved. . [0003] In recent years, organic-inorganic hybrid perovskite solar cells (PSCs) have attracted much attention due to their high conversion efficiency, low cost, and easy processing. At present, the certified efficiency of small-area perovskite s...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 曹靖李丛平李春伶冯小霞
Owner LANZHOU UNIVERSITY
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