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A kind of perovskite solar cell and preparation method thereof

A solar cell, perovskite technology, used in circuits, photovoltaic power generation, electrical components, etc.

Active Publication Date: 2020-10-23
HANGZHOU MICROQUANTA SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a perovskite solar cell and its preparation method, in which an aminosilane coupling agent is introduced between the metal oxide transport layer and the organic passivation layer, and the organic molecules used for passivation are improved. In the case of incomplete coverage of the metal oxide transport layer surface and weak interfacial bonding

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  • A kind of perovskite solar cell and preparation method thereof

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[0026] The preparation material of the metal oxide transmission layer 2 includes a molecular formula of MO X The metal oxide, wherein, when the metal oxide transport layer 2 is a hole transport layer (HTL), M is any one of metal elements including Cu, Ni, Mo, W, V, Gr; O is oxygen, x is the corresponding stoichiometric ratio.

[0027] The material of the conductive substrate 1 is any one of FTO conductive glass, ITO conductive glass, and flexible polymer conductive polymer.

[0028] The perovskite absorbing layer 5 has a molecular formula of ABX 3 Halide crystals of type structure, wherein, A is including methylamino (CH 3 NH 3 + ), formamidine (CH(NH 2 ) 2 + ), cesium (Cs + ) At least one of monovalent cations, B includes lead ions (Pb 2+ ), stannous ions (Sn 2+ ) at least one of the divalent cations, X includes Cl - 、Br - , I - at least one halide anion.

[0029] Prepare the preparation materials of the aminosilane coupling agent layer 3 into a solution, the so...

Embodiment 1

[0040] The embodiment of the preparation method of the first perovskite solar cell of the present invention comprises the following steps:

[0041] Step 11. Prepare aminosilane coupling agent solution: take 5 μL of γ-aminopropyltriethoxysilane (KH550), take 895 μL of absolute ethanol, take 100 μL of deionized water, mix and stir, among which γ-aminopropyltriethoxysilane The volume ratio of ethoxysilane (KH550) is 0.5vol%, the volume ratio of absolute ethanol is 89.5vol%, and the volume ratio of deionized water is 10vol%.

[0042]Step 12. Cleaning the conductive substrate 1: Use cleaning agent, deionized water, acetone, and isopropanol to ultrasonically clean the ITO conductive glass substrate, dry it with nitrogen, and then treat it with UV-ozone for 10 minutes.

[0043] Step 13, making metal oxide transport layer 2 (hole transport layer): prepare Cu with a mass fraction of 3wt% 2 O nano-suspension, dropwise onto the above-mentioned conductive substrate 1, the spin-coating sp...

Embodiment 2

[0050] The embodiment of the preparation method of the second perovskite solar cell of the present invention comprises the following steps:

[0051] Step 21. Prepare aminosilane coupling agent solution: Take 80 μL of γ-aminopropyltrimethoxysilane, 9820 μL of absolute ethanol, and 100 μL of deionized water, mix and stir, and the volume of γ-aminopropyltrimethoxysilane The ratio is 0.8vol%, the volume ratio of absolute ethanol is 98.2vol%, and the volume ratio of deionized water is 1vol%.

[0052] Step 22. Cleaning the conductive substrate 1: Use cleaning agent, deionized water, acetone, and isopropanol to ultrasonically clean the ITO conductive glass substrate, dry it with nitrogen, and then treat it with UV-ozone for 10 minutes.

[0053] Step 23, making the metal oxide transport layer 2 (electron transport layer): SnO with a particle diameter of 2 nanometers to 10 nanometers and a mass fraction of 2.5% 2 - Spin-coat the isopropanol solution on the substrate and bake at 180° C...

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Abstract

The invention relates to a perovskite solar cell, whose internal structure includes a conductive substrate, a metal oxide transport layer, an aminosilane coupling agent layer, an organic passivation layer, a perovskite absorbing layer, an upper transport layer and Top electrode, the preparation material of aminosilane coupling agent layer comprises γ-aminopropyl trimethoxysilane, γ-aminopropyl triethoxysilane, N-(β-aminoethyl)-γ-aminopropyl tri Any of the ethoxysilanes. The invention also discloses a preparation method of the perovskite solar battery. The invention utilizes the aminosilane coupling agent to closely combine the metal oxide transport layer and the passivation layer of the organic passivation layer, thereby improving the interface contact between the two, improving the passivation effect, and improving the performance of the perovskite solar cell.

Description

technical field [0001] The invention belongs to the technical field of perovskite solar cell preparation, and in particular relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] The perovskite solar cell is a popular third-generation solar cell. Its structure is a perovskite absorbing layer of several hundred nanometers sandwiched between the hole and electron transport layers on both sides. negative electrode. The perovskite absorption layer excites carriers under light, and the carriers migrate to the positive and negative electrodes through the corresponding transport layer, forming a current in a closed loop. [0003] Metal oxide materials are widely used in perovskite solar cells. These metal oxides act as hole transport layers (HTL) or electron transport layers (ETL) in perovskite solar cells, but metal oxides on the one hand There are defects on the surface, and these defects will become the center of carrier recombinatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K30/152H10K30/15H10K30/151H10K30/80Y02E10/549Y02P70/50
Inventor 不公告发明人
Owner HANGZHOU MICROQUANTA SEMICON CO LTD