Bulk heterojunction perovskite solar cell and preparation method thereof

A solar cell, bulk heterojunction technology, applied in semiconductor/solid-state device manufacturing, circuits, electrical components, etc., can solve problems such as unfavorable battery production and application, deterioration of battery performance, photogenerated electron leakage, etc., to simplify the structure and Preparation process, reduce production cost, high performance effect

Active Publication Date: 2016-11-16
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the abandonment of the hole transport layer will make the perovskite layer directly contact with the positive electrode, and some photogenerated electrons will leak from the positive electrode, resulting in poor performance of the battery, which is not conducive to the actual production and application of the battery.

Method used

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  • Bulk heterojunction perovskite solar cell and preparation method thereof
  • Bulk heterojunction perovskite solar cell and preparation method thereof
  • Bulk heterojunction perovskite solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This embodiment is a perovskite-CuSCN bulk heterojunction solar cell with a reverse structure, and its structure is: ITO / CH 3 NH 3 PbI 3-x Cl x -CuSCN / C 60 / BCP / Ag.

[0028] Configure CH in the nitrogen glove box 3 NH 3 PbI 3-x Cl x (0≤x≤3) and CuSCN mixed precursor solution, 7.419g PbI 2 , 0.448g PbCl 2 , 2.815g CH 3 NH 3 I and 0.150 g CuSCN were dissolved in 15.0 mL N,N-dimethylformamide (DMF), and stirred overnight to completely dissolve.

[0029] The ITO conductive glass substrate was ultrasonically cleaned with an aqueous solution of decontamination powder, deionized water, acetone, and absolute ethanol for 20 minutes, and finally dried with nitrogen.

[0030] In a nitrogen glove box, spin-coated the above precursor solution on the ITO substrate at 5000rpm for 30s, and after spin coating for about 5s, quickly add about 200μL of chlorobenzene to the ITO substrate, and finally 70% in DMF atmosphere. Anneal at ℃ for 10 minutes.

[0031] The prepared ITO / CH 3 NH 3 PbI 3-x Cl x...

Embodiment 2

[0034] This embodiment is a perovskite-CuSCN bulk heterojunction solar cell with a forward structure, and its structure is: ITO / TiO 2 / CH 3 NH 3 PbI 3-x Cl x -CuSCN / Au.

[0035] Configure TiO in atmospheric environment 2 For precursor solution, dissolve 125μL of concentrated nitric acid in 2.5mL of absolute ethanol, then add 470μL of tetraisopropyl titanate dropwise, stir at room temperature for 2 hours, then add 115μL of deionized water and stir overnight, and finally add 9.63mL of n-propyl Alcohol is diluted.

[0036] CH 3 NH 3 PbI 3-x Cl x The configuration of the mixed precursor solution of (0≤x≤3) and CuSCN is exactly the same as in Example 1.

[0037] The pretreatment of the ITO conductive glass substrate is exactly the same as in Example 1.

[0038] In the atmosphere, spin-coated TiO on the ITO substrate 2 The precursor solution was annealed at 200°C for 1 hour at a rotation speed of 3000 rpm for 30 seconds.

[0039] In the nitrogen glove box, in the prepared ITO / TiO 2 Spin coat...

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PUM

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Abstract

The invention discloses a bulk heterojunction perovskite solar cell and a preparation method thereof. The perovskite solar cell adopts a co-deposition technology to combine a traditional double-layer structure of a perovskite layer and a hole transport layer into a single-layer bulk heterojunction light absorption layer formed by perovskite and hole transport materials, which can not only save a preparation process of the hole transport layer to simplify the structure and preparation technology of a device, but can also maintain the performance of the device at a higher level, thereby facilitating the practical production and application of low-cost and high-performance perovskite solar cells.

Description

Technical field [0001] The invention belongs to the field of solar cells with new technologies and new structures, and specifically relates to a novel bulk heterojunction perovskite solar cell prepared by co-deposition based on perovskite and hole transport material and a preparation method thereof. Background technique [0002] With the depletion of non-renewable coal, oil, natural gas and other fossil energy sources on the earth, and the increasing environmental problems caused by their large-scale use, solar energy has been used as an inexhaustible renewable clean energy. Widely developed and utilized. Among them, solar cells can directly convert solar energy into electrical energy, which is a very important way of using solar energy. [0003] According to different types of photoelectric active materials, solar cells can be divided into elemental silicon solar cells, inorganic compound semiconductor solar cells, and organic or organic-inorganic hybrid solar cells. Among them,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K85/00H10K30/00H10K30/80Y02E10/549
Inventor 卞祖强叶森云饶海霞刘志伟黄春辉
Owner PEKING UNIV
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