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Application of phenol-substituted fullerene derivative in perovskite solar cell, perovskite solar cell and preparation method of perovskite solar cell

A technology for fullerene derivatives and solar cells, applied in the field of solar cells, can solve the problems of high cost, increased cost of solar cells, difficulty in separation and purification, etc., and achieves the effects of improving efficiency, improving electron transport performance, and strong operability

Active Publication Date: 2019-05-10
SUZHOU UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in the prior art, most substances that modify the electron transport layer or perovskite layer are difficult to obtain, and there are generally problems of separation and purification and high cost. Although the performance of perovskite solar cells can be improved, but in Invisibly, the cost of preparing solar cells is also greatly increased, which is not conducive to the commercial development of perovskite solar cells. Therefore, it is necessary to find materials with simple synthesis methods, low prices, and better electron transport performance for perovskite solar cells. Modification is an urgent technical problem in this field

Method used

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  • Application of phenol-substituted fullerene derivative in perovskite solar cell, perovskite solar cell and preparation method of perovskite solar cell
  • Application of phenol-substituted fullerene derivative in perovskite solar cell, perovskite solar cell and preparation method of perovskite solar cell
  • Application of phenol-substituted fullerene derivative in perovskite solar cell, perovskite solar cell and preparation method of perovskite solar cell

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preparation example Construction

[0041] SnO 2 Preparation of the solution: Weigh 22.6 mg of tin chloride dihydrate (SnCl 2 2H 2 O), it was dissolved in absolute ethanol, stirred for 2h to obtain a concentration of 0.1M SnO 2 spare.

[0042] Preparation of fullerene derivative solution: Weigh different masses of (phenol-substituted fullerene derivatives), which are dissolved in ultra-dry chlorobenzene to prepare fullerene solutions with different concentrations, and the concentration range of the solution is 0.25-1.5mg / mL.

Embodiment 1

[0044] S1, SnO 2 Film preparation:

[0045] Filter the above SnO with a 0.45 μm Teflon filter head 2 solution, drop the filtered solution on the UVO-treated ITO substrate, and spin-coat at 2000 rpm, at a rate of 45 seconds, to form a thin film. Place the spin-coated ITO substrate on a titanium heating plate for heating at 150°C for half an hour, then at 180°C for one hour, cool to room temperature, and move it to a nitrogen glove box for later use.

[0046] S2, preparation of fullerene derivative film:

[0047] After the preparation of the tin oxide thin film of the electron transport layer was completed, a fullerene derivative solution with a concentration of 0.75 mg / mL was spin-coated on the tin oxide layer at a rotation speed of 1500 rpm for 60 seconds to obtain a fullerene derivative thin film.

[0048] S3, preparation of perovskite layer:

[0049] Preparation of perovskite precursor solution: Weigh formamidine hydriodide (FAI), methyl ammonium chloride (MACl) and meth...

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Abstract

The invention discloses application of a phenol-substituted fullerene derivative in a perovskite solar cell, the perovskite solar cell and a preparation method of the perovskite solar cell. The perovskite solar cell comprises a conductive layer, an electron transmission layer, a fullerene derivative thin film, a perovskite layer, a hole transmission layer and an electrode which are sequentially arranged according to a layer structure, wherein the fullerene derivative can be modified on a surface of the electron transmission layer or doped in the perovskite layer. By modifying the fullerene derivative on the electron transmission layer or doping the fullerene derivative on the perovskite layer, the electron transmission performance of the perovskite solar cell can be improved, the surface defect is passivated, the magnetic hysteresis phenomenon is reduced, so that the stability and the efficiency of the solar cell are improved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to an application of a phenol-substituted fullerene derivative in a perovskite solar cell, a perovskite solar cell and a preparation method thereof. Background technique [0002] In recent years, perovskite materials have attracted extensive attention from researchers due to their excellent optoelectronic properties, such as high absorption coefficient, high carrier mobility, and long carrier diffusion length. Compared with traditional solar cells, organic-inorganic hybrid perovskite solar cells have the advantages of high efficiency and low cost. At present, the efficiency of perovskite solar cells has increased from 3.8% to more than 22%. There are two main structures of perovskite solar cells, mesoporous and planar heterojunction solar cells. Planar heterojunction solar cells can be divided into conventional n-i-p type and inverted p-i-n type solar cells, which are divided according t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/44H01L51/48
CPCY02E10/549
Inventor 谌宁曹天天陈康
Owner SUZHOU UNIV
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