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Stable organic solar cell and preparation method thereof

A solar cell and organic technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as chemical synthesis problems, device efficiency effects, etc., and achieve the effects of improving light stability, high energy conversion efficiency, and energy conversion efficiency.

Inactive Publication Date: 2019-03-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is also possible to improve the glass transition temperature TG of the material by modifying the molecular structure of the donor material and the acceptor material in the organic active layer and introducing some stable structural units. The increase of the glass transition temperature can significantly improve the performance of the device in the dark state. Stability, but may adversely affect the efficiency of the device and also bring difficulties in chemical synthesis

Method used

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  • Stable organic solar cell and preparation method thereof
  • Stable organic solar cell and preparation method thereof
  • Stable organic solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) The glass substrate coated with the ITO layer is ultrasonically cleaned with isopropanol, detergent and deionized water in sequence, and then dried in an oven for subsequent use;

[0034] (2) Dissolve 0.4g of zinc acetate in 4ml of monomethyl ether solution, then add 111 microliters of ethanolamine solution and stir at 50°C for 12h, then spin-coat the prepared ZnO precursor solution on ITO as an electron transport layer , with a rotation speed of 3000rpm and a thickness of 30nm; then thermal annealing at 200°C for 1h;

[0035] (3) put C 60 -SAM solid is dissolved in the mixed solution of chlorobenzene and tetrahydrofuran, the volume ratio of chlorobenzene and tetrahydrofuran in the mixed solution is 1:1 (the amount of chlorobenzene is 2ml), and then the solution is heated at 50°C at a speed of 150 rpm Stir for 12h, filter with a filter head to obtain a clear solution that is C 60 -SAM solution. Will C 60 -SAM solution was spin-coated on the ZnO electron transpor...

Embodiment 2

[0054] (1) The glass substrate coated with the ITO layer is ultrasonically cleaned with isopropanol, detergent and deionized water in sequence, and then dried in an oven for subsequent use;

[0055] (2) Dissolve 0.4g of zinc acetate in 4ml of monomethyl ether solution, then add 111 microliters of ethanolamine solution and stir at 50°C for 12h, then spin-coat the prepared ZnO precursor solution on ITO as an electron transport layer , with a rotation speed of 3000rpm and a thickness of 30nm; then thermal annealing at 200°C for 1h;

[0056] (3) 6mg C 60 -SAM solid is dissolved in the mixed solution of chlorobenzene and tetrahydrofuran, the volume ratio of chlorobenzene and tetrahydrofuran in the mixed solution is 1:1 (the amount of chlorobenzene is 2ml), and then stirred at 50°C for 12h at a rate of 150 rpm , and then filtered through a 0.45 micron filter to obtain a clear solution. Take 35 μl C 60 -SAM solution was spin-coated on the ZnO electron transport layer as a modified...

Embodiment 3

[0073] (1) The glass substrate coated with the ITO layer is ultrasonically cleaned with isopropanol, detergent and deionized water in sequence, and then dried in an oven for subsequent use;

[0074] (2) Dissolve 0.4g of zinc acetate in 4ml of monomethyl ether solution, then add 111 microliters of ethanolamine solution and stir at 50°C for 12h, then spin-coat the prepared ZnO precursor solution on ITO as an electron transport layer , with a rotation speed of 3000rpm and a thickness of 30nm; then thermal annealing at 200°C for 1h;

[0075] (3) 6mg C 60 -SAM solid is dissolved in the mixed solution of chlorobenzene and tetrahydrofuran, the volume ratio of chlorobenzene and tetrahydrofuran in the mixed solution is 1:1 (the amount of chlorobenzene is 2ml), and then stirred at 50°C for 12h at a rate of 150 rpm , and then filtered through a 0.45 micron filter to obtain a clear solution. Take 35 μl C 60 -SAM solution was spin-coated on the ZnO electron transport layer as a modified...

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Abstract

The invention discloses a stable organic solar cell and a preparation method thereof. The preparation method comprises the following steps: spin-coating a ZnO precursor solution on an ITO layer so asto prepare an electron transmission layer; then spin-coating a C60-SAM solution to serve as a modification layer; dissolving a donor material and a receptor material; spin-coating the dissolved materials on the modification layer; evaporating molybdenum oxide; and evaporating silver to serve as a positive electrode of the cell so as to prepare the stable organic solar cell. According to the organic solar cell, a green solvent o-xylene is used for replacing chlorobenzene to serve as a processing solvent of an active layer innovatively, so that the illumination stability is improved; and the modification layer is used for modifying the zinc oxide electron transmission layer innovatively, so that the energy conversion efficiency and the thermal stability are improved. The solar cell has relatively high energy conversion efficiency and excellent illumination stability.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric devices, in particular to a stable organic solar cell and a preparation method thereof. Background technique [0002] With the increasingly severe global energy crisis and environmental problems, solar energy, as a renewable green energy, has become a global research hotspot. Solar cells are the main way to utilize solar energy. Compared with traditional silicon solar cells, organic solar cells have the advantages of low cost, light weight, solution processing, and especially easy large-area preparation, so they have very extensive research value and applications. prospect. At present, the highest energy conversion efficiency of a single organic solar cell has exceeded 14% (Advanced Materials, 2018, DOI: 10.1002 / adma.201800868). At the same time, the organic light-absorbing layer material has a discontinuous absorption spectrum, and a translucent and heat-insulating device can be m...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/215H10K30/152Y02E10/549
Inventor 叶轩立徐翔肖经洋张桂传
Owner SOUTH CHINA UNIV OF TECH
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