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Stable no-light-bath high-efficiency organic solar cell device and preparation method therefor

A technology of solar cells and devices, which is applied in the manufacture of organic semiconductor devices, electric solid devices, semiconductor/solid devices, etc., can solve the problems of unfavorable stable power supply equipment, poor electrical performance, and longer time consumption, etc., to achieve photoelectric conversion efficiency High, maintain flexible processing, simple post-processing effect

Active Publication Date: 2017-11-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pure titanium dioxide nanoparticles can be used as an electron transport layer, but when it is used as an electron transport layer, there are many holes, the film coverage is low, and the electrical properties are poor.
Moreover, in the actual application process of these metal oxide electron transport materials, unfavorable light-soaking phenomenon often occurs, that is, the device efficiency needs to be continuously illuminated for tens of minutes or longer to reach a stable state.
This phenomenon may take longer in the actual application process in the case of weak light in the morning, and it is also extremely unfavorable for equipment that requires a stable power supply
[0004] In addition, the TiOx electron transport layer prepared by the traditional sol-gel method has low electron mobility and contains a large number of defects
However, the thin films prepared by magnetron sputtering require special large-scale equipment, which is not conducive to large-scale applications.
Although higher-quality films can be obtained after high-temperature calcination, high-temperature calcination is a high-energy-consuming process, and it is not compatible with flexible solar cell devices.

Method used

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  • Stable no-light-bath high-efficiency organic solar cell device and preparation method therefor
  • Stable no-light-bath high-efficiency organic solar cell device and preparation method therefor
  • Stable no-light-bath high-efficiency organic solar cell device and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A stable non-light-bath high-efficiency organic solar cell device, its structure is: ITO / TiO 2 :TOPD(UV+EA) / PTB7-Th:PC 71 BM / MoO 3 / Ag (for the structure schematic diagram see figure 1 ), the specific preparation steps are as follows:

[0034] 1) Conductive substrate pretreatment

[0035] The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then placed on a hot table to dry, and then UV-ozone treatment to remove Organic matter remains on the surface.

[0036] 2) Preparation of an electron transport layer on a pretreated transparent conductive substrate

[0037] 2a, Preparation of crystalline nano-TiO2 particles

[0038] Using titanium tetrachloride as a precursor, weigh 2.3ml of titanium tetrachloride and 8ml of ethanol in an ice-water bath and mix them thoroughly, transfer the resulting mixture into 40ml of b...

Embodiment 2

[0060] A stable non-light bath high-efficiency organic solar cell device, the specific preparation steps are as follows:

[0061] 1) Conductive substrate pretreatment

[0062] The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then placed on a hot table to dry, and then UV-ozone treatment to remove Organic matter remains on the surface.

[0063] 2) Preparation of an electron transport layer on a pretreated transparent conductive substrate

[0064] 2a, Preparation of crystalline nano-TiO2 particles

[0065] Using titanium tetrachloride as the precursor, weigh 2ml of titanium tetrachloride and 8ml of ethanol in an ice-water bath and mix thoroughly, transfer the resulting mixture into 40ml of benzyl alcohol, and react at 85°C for 9h; mix 3ml of the reaction product with 27ml Diethyl ether is mixed, precipitated and washe...

Embodiment 3

[0082] A stable non-light bath high-efficiency organic solar cell device, the specific preparation steps are as follows:

[0083] 1) Conductive substrate pretreatment

[0084] The square resistance is 15Ω, and the patterned transparent conductive substrate ITO is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then placed on a hot table to dry, and then UV-ozone treatment to remove Organic matter remains on the surface.

[0085] 2) Preparation of an electron transport layer on a pretreated transparent conductive substrate

[0086] 2a, Preparation of crystalline nano-TiO2 particles

[0087] Using titanium tetrachloride as a precursor, weigh 2.5ml of titanium tetrachloride and 8ml of ethanol in an ice-water bath and mix them thoroughly, transfer the resulting mixture into 40ml of benzyl alcohol, and react at 90°C for 9h; mix 3ml of the reaction product with 27ml of diethyl ether were mixed, precipitated...

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Abstract

The invention relates to the technical field of organic solar cells, and specifically relates to an electronic transmission layer applied to a solar cell device. The electronic transmission layer comprises a titanium dioxide layer and an interface decoration layer, wherein the titanium dioxide layer is made of titanium dioxide nanoparticles and chelating agent diacetyl acetone titanic acid diisopropyl ester, and the interface decoration layer is made of ethanol amine. The method effectively improves the electrical properties of a titanium dioxide film through component adjustment and interface decoration, and passivates the surface defects of titanium dioxide. The preparation technology of the electronic transmission layer is simple, and a high-efficiency, stable and no-light-bath solar cell device is obtained.

Description

technical field [0001] The invention belongs to the technical field of organic solar cells, and in particular relates to a stable, light-free and high-efficiency organic solar cell device and a preparation method thereof. Background technique [0002] In today's society, with the rapid development of science and technology, various new technologies have quickly entered people's daily necessities of life. While people are enjoying the great convenience brought by technology, their demand for energy is also increasing. However, the existing global reserves of fossil energy are decreasing year by year, and the existing ones can only meet the energy needs of human beings for decades. This increasingly acute contradiction makes all countries commit to finding new types of renewable energy to break the current energy dilemma faced by mankind. Among all renewable energy sources, solar cells have unique advantages and are favored by researchers from all over the world. At present...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K85/10H10K85/211H10K30/00H10K2102/00Y02E10/549
Inventor 王涛闫宇杨丽燕蔡飞龙李伟
Owner WUHAN UNIV OF TECH
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