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Method for preparing 2D/3D organic-inorganic hybrid perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as poor film quality, and achieve the effects of quality improvement, performance improvement, and porosity reduction

Active Publication Date: 2021-11-19
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to improve the problem of poor film-forming quality existing in the preparation process of 2D / 3D perovskite layer, the present invention proposes a preparation method of high-efficiency 2D / 3D inorganic perovskite solar cell, spin-coated MAPbI 3 Treatment of 3D perovskite thin films with mixed gas BA / MA after absorbing layer solution

Method used

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  • Method for preparing 2D/3D organic-inorganic hybrid perovskite solar cell

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Embodiment 1

[0020] A preparation method for high-efficiency 2D / 3D perovskite solar cells, using ITO as the conductive substrate, tin dioxide as the electron transport layer, 2D / 3D perovskite light-absorbing layer, Spiro-OMeTAD as the hole transport layer, and silver as the pair electrodes, such as figure 1 and figure 2 As shown, it specifically includes the following steps:

[0021] Step 1: Put the 2cm×2cm ITO glass into the cleaning rack, clean the surface with deionized water, absolute ethanol, acetone, isopropanol and absolute ethanol in sequence, and dry it with nitrogen gas for later use;

[0022] Step 2: Dilute the tin dioxide colloidal solution with a mass fraction of 15wt.% to 2.67wt.% with deionized water, prepare an appropriate amount of tin dioxide solution, and ultrasonically mix it for 30 minutes to obtain a mixed solution A;

[0023] Step 3: Spin-coat mixed solution A on the surface of the ITO glass cleaned in step 1, and anneal at 150°C for 30 minutes to obtain a tin dio...

Embodiment 2

[0029] A preparation method of a 2D / 3D organic-inorganic hybrid perovskite solar cell, using FTO as a conductive substrate, tin dioxide as an electron transport layer, 2D / 3D perovskite light-absorbing layer, and Spiro-OMeTAD as a hole transport layer , gold as the counter electrode, specifically comprising the following steps:

[0030] Step 1: Put the 2cm×2cm FTO glass into the cleaning rack, clean the surface with deionized water, absolute ethanol, acetone, isopropanol and absolute ethanol in sequence, and dry it with nitrogen gas for later use;

[0031] Step 2: Dilute the tin dioxide colloidal solution with a mass fraction of 15wt.% to 2.67wt.% with deionized water, prepare an appropriate amount of tin dioxide solution, and ultrasonically mix it for 30 minutes to obtain a mixed solution A;

[0032] Step 3: Spin-coat the mixed solution A on the surface of the FTO glass cleaned in step 1, and anneal at 150° C. for 30 minutes to obtain a tin dioxide electron transport layer;

...

Embodiment 3

[0038] A preparation method of high-efficiency 2D / 3D organic-inorganic hybrid perovskite solar cells, using ITO as the conductive substrate, tin dioxide as the electron transport layer, 2D / 3D perovskite light-absorbing layer, and Spiro-OMeTAD as the hole transport Layer and carbon are counter electrodes, which specifically include the following steps:

[0039] Step 1: Put the 2cm×2cm ITO glass into the cleaning rack, clean the surface with deionized water, absolute ethanol, acetone, isopropanol and absolute ethanol in sequence, and dry it with nitrogen gas for later use;

[0040] Step 2: Dilute the tin dioxide colloidal solution with a mass fraction of 15wt.% to 2.67wt.% with deionized water, prepare an appropriate amount of tin dioxide solution, and ultrasonically mix it for 30 minutes to obtain a mixed solution A;

[0041] Step 4: Add 553mg PbI 2 (>99.99%), 198mg MAI (>99.99%) dissolved in 1mL DMF (≥99.9%), heated and stirred at 70°C until completely dissolved to obtain MAP...

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Abstract

The invention discloses a method for preparing a 2D / 3D organic-inorganic hybrid perovskite solar cell, which belongs to the technical field of solar cells. Methylamine gas is used for assistance, butylamine gas goes deep into MAPbI3 crystal lattices to carry out a replacement reaction, and the 2D / 3D organic-inorganic hybrid perovskite solar cell with a structure that 3D perovskite is coated with 2D perovskite is formed. The problem that an organic-inorganic hybrid positive perovskite solar cell is poor in stability is solved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a method for preparing 2D / 3D organic-inorganic hybrid perovskite solar cells. Background technique [0002] Since the report, halide perovskite solar cells have attracted much attention due to the rapid development of their photoelectric conversion efficiency, which has rapidly increased from the initially reported 3.8% to more than 25%. Organic-inorganic hybrid perovskite materials have excellent optoelectronic properties, such as long carrier diffusion length, medium carrier mobility, high light absorption coefficient and adjustable optical bandgap, and the preparation process is simple, so they are expected to become A new generation of solar cells with the advantages of high efficiency, low cost, all-solid-state, flexible and wearable. [0003] In the existing methods for preparing 2D / 3D perovskite solar cells, spin coating and annealing are generally used to prepare the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/44
CPCH10K71/12H10K71/40H10K30/15H10K30/10H10K30/88Y02E10/549Y02P70/50
Inventor 李海进申小龙刘昌江
Owner SOUTHWEST PETROLEUM UNIV
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