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Technology for rapidly improving performance of perovskite solar cell based on organic hole transport layer

A technology for solar cells and hole transport layers, applied in the field of solar cells, can solve the problems of uncontrolled crystallinity and oxidation degree, difficult processing temperature and time, poor process repeatability, etc., and achieve excellent photoelectric conversion performance and uniform texture. , the effect of high photoelectric conversion performance

Active Publication Date: 2018-11-30
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the uncontrolled crystallinity and oxidation degree of the traditional Spiro-OMeTAD film reported in the literature, the difficulty in precise control of the treatment temperature and time, the rough surface of the film, the low quality of the film and the repeatability of the process. It provides a method for preparing perovskite solar cells, that is, a new process for rapidly improving the performance of perovskite solar cells based on organic hole transport layers.

Method used

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  • Technology for rapidly improving performance of perovskite solar cell based on organic hole transport layer
  • Technology for rapidly improving performance of perovskite solar cell based on organic hole transport layer
  • Technology for rapidly improving performance of perovskite solar cell based on organic hole transport layer

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preparation example Construction

[0028] Through the preparation method of the invention, the performance of the perovskite solar cell based on the organic hole transport layer can be rapidly improved.

[0029] The chemical formula of perovskite light absorbing layer can be expressed as ABX 3 , where A can adopt monovalent cations or mixed cations, including but not limited to CH 3 NH 3 +, NH 2 -CH=NH 2 + 、Cs + , Li + 、C 4 h 9 NH 3 + 、CH 6 N 3 + 、Na + 、K + Wait. B can use Pb 2+ , Sn 2+ 、 Ge 2 + 、Co 2+ , Fe 2+ , Mn 2+ 、Cu 2+ and Ni 2+ At least one of these ions, that is, B can be one of these ions, or a mixed structure of any two or more of these ions. X can adopt Cl - 、Br - , I - 、SCN - , BF 4 - At least one of X, that is, X can be a single ion, or a mixed ion, such as a mixture of any two of the ions. For example, the chemical composition includes but is not limited to methylamine lead iodide, formamidine lead iodide, methylamine formamidine lead iodide mixture, formamidine ces...

Embodiment 1

[0045] (1) Preparation of the hole transport layer film without heat treatment. The FTO glass was ultrasonically cleaned with lye, deionized water, and acetone for 30 minutes, dried, and treated with ultraviolet light for 15 minutes. TiO was then prepared on the FTO glass substrate 2 Dense layer, the precursor solution solvent is ethanol, which includes the following components: tetraisopropyl titanate (0.3mol / L), acetylacetone (0.45mol / L), hydrochloric acid (0.09mol / L), water (1.8mol / L L). Absorb the precursor solution, drop it on the cleaned FTO substrate, make the solution cover the entire FTO surface, and form a film by spin coating, the spin coating speed is 3000rpm, and the time is 20s. Then sintered at 510 °C for 30 min in a muffle furnace. Then, measure 461 mg of lead iodide (PbI 2 ), 159 mg CH 3 NH 3 I powder, 78 mg dimethyl sulfoxide mixed with 600 mg N,N-dimethylformamide (DMF), stirred at room temperature for 2 hours to form CH 3 NH 3 PB 3 Perovskite precu...

Embodiment 2

[0054] (1) Preparation of the hole transport layer film without heat treatment. With embodiment 1.

[0055] (2) The film prepared in step (1) was placed on a hot plate, the temperature was set to 80° C., and the heat treatment time was 120 seconds to obtain a Spiro-OMeTAD hole transport layer film.

[0056] (3) Preparation of perovskite solar cells. With embodiment 1.

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Abstract

The invention relates to a technology for rapidly improving the performance of a perovskite solar cell based on an organic hole transport layer. The invention relates to a preparation method of the perovskite solar cell; a perovskite light absorption layer is coated with a solution containing an organic hole transport material, and then annealing is carried out by adopting heat treatment to prepare the hole transport layer, wherein the heat treatment temperature is 80-120 DEG C and the treatment time is 30-120 seconds.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a process for improving the performance of solar cells, more specifically, a perovskite solar cell based on a hole transport layer and a process for improving performance. Background technique [0002] Organic-inorganic halide perovskite solar cells have attracted great attention due to their ultra-high efficiency, low cost, and easy fabrication. Nevertheless, the stability issue of perovskite solar cells has hindered the further development of commercialization. Therefore, stability is one of the important topics in the research of perovskite solar cells. This includes the long-term stability of the device, that is, the lifetime, and the stability of the manufacturing process of the device, that is, reproducibility and repeatability. [0003] Organic-inorganic halide perovskite materials have optical and electrical properties such as high light absorption coeff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCH10K71/00H10K71/12H10K30/10Y02E10/549
Inventor 杨松旺张博怀邵君陈宗琦赵庆宝寿春晖沈曲邬荣敏丁莞尔蒋新伟沈敏强
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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