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Electronic transmission layer capable of passivating surface defect of perovskite layer, inverse perovskite structure and preparation method and application of inverse perovskite structure

An electron transport layer, perovskite structure technology, applied in the field of solar cells, can solve problems such as the limitation of perovskite performance and effect, and achieve the effect of passivating perovskite surface defects, weakening charge recombination, and the method is simple and easy to implement

Pending Publication Date: 2019-07-23
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a lot of research is currently focused on dealing with defects inside pero

Method used

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  • Electronic transmission layer capable of passivating surface defect of perovskite layer, inverse perovskite structure and preparation method and application of inverse perovskite structure
  • Electronic transmission layer capable of passivating surface defect of perovskite layer, inverse perovskite structure and preparation method and application of inverse perovskite structure
  • Electronic transmission layer capable of passivating surface defect of perovskite layer, inverse perovskite structure and preparation method and application of inverse perovskite structure

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Effect test

Embodiment 1

[0063] This embodiment provides a perovskite device (inverted perovskite structure), such as figure 1 , the specific structure is ITO / NiO x / Perovskite(PVSK, perovskite layer, (FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 ) / electron transport layer / zirconium acetylacetonate / Ag. Its preparation method is as follows.

[0064] (1) Pretreatment of transparent conductive layer

[0065] Set the resistor to 15Ωsquare –1 The indium tin oxide (ITO) conductive glass sheet was cleaned sequentially by deionized water, acetone, detergent, deionized water and ethanol by ultrasonic cleaning, each step was 20 min.

[0066] (2) Configuration of perovskite precursor solution

[0067] A solution of 1.5mol / L lead iodide and 1.376mol / L FAI was prepared, and the solvent used was DMF:DMSO 4:1 (volume ratio).

[0068] Prepare the B solution of 1.5mol / L lead bromide and 1.376mol / L MABr, the solvent used is DMF:DMSO 4:1.

[0069] Prepare 1.5mol / L cesium iodide, the solvent is DMOS.

[0070] Mix A solutio...

Embodiment 2

[0078] This embodiment provides a perovskite device (inverted perovskite structure), the structure of which is consistent with that of embodiment 1, and the preparation method is consistent with that of embodiment 1 except for the preparation of the electron transport layer solution.

[0079] The electron transport layer solution was prepared as follows:

[0080] The concentration of the PCBM solution is 20 mg / ml, the solvent is chlorobenzene, and 2,2-bipyridine is added to prepare a 1 mg / ml 2,2-bipyridine solution to obtain the electron transport layer solution.

Embodiment 3

[0082] This embodiment provides a perovskite device (inverted perovskite structure), the structure of which is consistent with that of embodiment 1, and the preparation method is consistent with that of embodiment 1 except for the preparation of the electron transport layer solution.

[0083] The electron transport layer solution was prepared as follows:

[0084] The concentration of the PCBM solution is 20 mg per milliliter, the solvent is dichlorobenzene, and o-phenanthroline is added to prepare a 0.05 mg per milliliter o-phenanthroline solution to obtain the electron transport layer solution.

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Abstract

The invention relates to an electronic transmission layer capable of passivating surface defect of a perovskite layer, an inverse perovskite structure and preparation method and application of the inverse perovskite structure. The electronic transmission layer comprises an electronic transmission layer material and a passivation agent, wherein the passivation agent is distributed in the electronictransmission layer material, the electronic transmission layer is PCBM, nanometer zinc oxide of nanometer cerium oxide, and the passivation agent is one or more of 2,2 dipyridyl, 4,4 dipyridyl, phenanthroline or EDTA. The special passivation agent is distributed in the electronic transmission layer provided by the invention, has the characteristics of self assembly and can be automatically combined with a perovskite surface, the perovskite surface defect can be effectively passivated, charge recombination is reduced, the efficiency of a solar cell can be effectively improved when the electronic transmission layer is coated on the perovskite layer to further fabricate the solar cell, and the electronic transmission layer has important significance to promotion of commercial progress of theperovskite solar cell.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to an electron transport layer capable of passivating surface defects of a perovskite layer, an inverted perovskite structure and a preparation method and application thereof. Background technique [0002] Organic-inorganic hybrid perovskite solar cells have potential advantages such as strong absorption, high mobility, long carrier life, and low-cost solution processing, and have become a new important research direction in the field of solar energy utilization. At present, the energy conversion efficiency of small-area devices in his laboratory has increased from 3.8% reported in 2009 (J.Am.Chem.Soc., 2009,131,6050–6051) to 22.1% (NREL, Best Research-Cell Efficiencies , http: / / www.nrel.gov,accessed:November 2016), the energy conversion efficiency of module devices can reach 8.7% (Energy Environ.Sci.2014,7,2642), becoming the most potential solar cell technology. P...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/12H10K85/00H10K30/10H10K30/80Y02E10/549
Inventor 程鹏鹏谭婉怡闵永刚
Owner GUANGDONG UNIV OF TECH
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