Bend-resistant perovskite solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the manufacture of circuits, electrical components, and final products, can solve problems such as poor electrical conductivity, achieve high coverage, large grain size, and slow down the crystallization rate.

Inactive Publication Date: 2018-01-19
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polyurethane materials have poor electrical conductivity, so they have not been used in perovskite solar cells

Method used

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  • Bend-resistant perovskite solar cell and preparation method thereof
  • Bend-resistant perovskite solar cell and preparation method thereof
  • Bend-resistant perovskite solar cell and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0042] Example 1. Preparation method of perovskite solar cells.

[0043] (1) After the patterned ITO glass substrate 1 was ultrasonically cleaned with acetone, detergent, deionized water, and isopropanol, it was dried and cleaned in a plasma cleaning machine for 2 to 3 minutes, and calcium oxide was prepared on the substrate. Hole transport layer 2 for titanium oxide solar cells.

[0044] (2) Add polyurethane material (dissolved in DMF at a certain concentration) to CH at a certain mass concentration 3 NH 3 PB 3 Perovskite precursor solution, and stirred at 60°C for 1-2 h to dissolve, mixed evenly and then spin-coated on the hole transport layer to obtain the perovskite active layer 3, the rotation speed is 5500 rpm, time 30 s, in which chlorobenzene was added dropwise at the 7th s of spin coating.

[0045](3) Anneal the coated perovskite active layer sample at 90°C~120°C for 10 min~20 min.

[0046] (4) The electron transport layer material PC 61 BM was dissolved in chl...

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Abstract

The invention discloses a bend-resistant perovskite solar cell, comprising a transparent substrate, an anode, an electron transport layer, a perovskite active layer, a hole transport layer and a cathode. The perovskite active layer is composed of a perovskite material and an additive. The additive is polyurethane. The perovskite material is CH<3>NH<3>PbI<3>, CH<3>NH<3>PbI<3>-xClx or (FAPbI<3>)l-x(MAPbBr<3>)x. The additive polyurethane is added to perovskite precursor solution according to mass concentration of 0.01wt%-5wt%. According to the bend-resistant perovskite solar cell, the polyurethane is introduced into perovskite precursor solution, perovskite crystals are controlled to nucleate, a crystallization rate is reduced, the bend-resistance of perovskite film is improved, a new thoughtfor preparing high performance flexible perovskite solar cell is provided, and the flexible roll-to-roll commercialized production of the perovskite solar cell is realized.

Description

technical field [0001] The invention belongs to the field of perovskite solar cells. Background technique [0002] With the increasing energy crisis, countries are forced to invest a lot of manpower, material and financial resources in new energy fields such as solar cells. Perovskite solar cells have the characteristics of high efficiency, low cost, light weight, flexibility, and large-area printing, making them the next generation of green energy with commercial application prospects. Perovskite solar cells are initially fabricated from a perovskite active layer on dense TiO 2 and mesoporous TiO 2 This is achieved by the conventional structure of a covered fluorine-doped tin oxide (FTO) anode, followed by the preparation of a hole transport layer and a high work function cathode (e.g. gold). However, due to the influence of the following factors: 1. Lack of long-term stability; 2. The brittleness of perovskite crystals. Perovskite solar cells with this traditional stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0256H01L31/18
CPCY02P70/50
Inventor 谈利承陈义旺黄增麒胡婷
Owner NANCHANG UNIV
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