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An Efficient and Stable Ternary System Heterostructure Polymer Solar Cell

A technology of solar cells and ternary systems, applied in the field of polymer solar cells, can solve the problems of poor miscibility of fullerene electron acceptors and decreased photoelectric conversion efficiency

Active Publication Date: 2019-08-02
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its disadvantage is that it has poor miscibility with fullerene electron acceptors, so no matter how it is stored or packaged, its photoelectric conversion efficiency is likely to drop sharply within a few days

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-efficiency and stable ternary system heterostructure polymer solar cell with the structure of ITO / TiO 2 / / PffBT4T-2OD:PCDTBT1:PC 71 BM / MoO 3 / Ag, the specific preparation steps are as follows:

[0024] 1) The square resistance is 15Ω, and the patterned conductive glass is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then dried on a hot table, and then UV-ozone treatment is performed to remove Residual organic matter on the surface;

[0025] 2) Prepare the electron transport layer on the transparent conductive substrate pretreated by step 1: Spin-coat the nano-titanium dioxide dispersion with a solid content of 5 mg / ml at a speed of 3000 rpm for 30 s, and then anneal at 150 ° C for 30 min to obtain a thickness of 20nm electron transport layer;

[0026] 3) take chlorobenzene as solvent preparation PffBT4T-2OD solid content is the active layer solution of 6mg / ml, the ratio of each compo...

Embodiment 2

[0031] A high-efficiency and stable ternary system heterostructure polymer solar cell with the structure of ITO / TiO 2 / / PffBT4T-2OD:PCDTBT1:PC 71 BM / MoO 3 / Ag, the specific preparation steps are as follows:

[0032] 1) The square resistance is 15Ω, and the patterned conductive glass is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then dried on a hot table, and then UV-ozone treatment is performed to remove Residual organic matter on the surface;

[0033] 2) Prepare the electron transport layer on the transparent conductive substrate pretreated by step 1: Spin-coat the nano-titanium dioxide dispersion with a solid content of 5 mg / ml at a speed of 3000 rpm for 30 s, and then anneal at 150 ° C for 30 min to obtain a thickness of 20nm electron transport layer;

[0034] 3) take chlorobenzene as solvent preparation PffBT4T-2OD solid content is the active layer solution of 6mg / ml, the ratio of each compo...

Embodiment 3

[0039] A high-efficiency and stable ternary system heterostructure polymer solar cell with the structure of ITO / TiO 2 / / PffBT4T-2OD:PCDTBT1:PC 71 BM / MoO 3 / Ag, the specific preparation steps are as follows:

[0040] 1) The square resistance is 15Ω, and the patterned conductive glass is ultrasonically cleaned in deionized water, ethanol, acetone, and isopropanol for 10 minutes, blown dry with nitrogen, and then dried on a hot table, and then UV-ozone treatment is performed to remove Residual organic matter on the surface;

[0041] 2) Prepare the electron transport layer on the transparent conductive substrate pretreated by step 1: spin-coat the nano-titanium dioxide dispersion with a solid content of 5 mg / ml at a speed of 3000 rpm for 30 seconds, and then anneal at 150 ° C for 30 minutes to obtain a thickness of 20nm electron transport layer;

[0042]3) take chlorobenzene as solvent preparation PffBT4T-2OD solid content is the active layer solution of 6mg / ml, the ratio of e...

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Abstract

The invention belongs to the technical field of polymer solar cells, and specifically relates to a ternary system heterostructure polymer solar cell, which includes a photoactive layer, and the photoactive layer includes an electron acceptor material, a first electron donor material and a second electron donor material. Two electron donor materials; the electron acceptor material is PC 71 BM, the first electron donor material is PWBT4T-2OD, and the second electron donor material is PCDTBT1, PCDTBT8, any one of PCDTBT. The solar battery device prepared by the invention has high photoelectric conversion efficiency and good durability.

Description

technical field [0001] The invention belongs to the technical field of polymer solar cells, and in particular relates to a highly efficient and stable ternary system heterostructure polymer solar cell. Background technique [0002] With the rapid development of industries in various countries, the energy crisis and environmental pollution problems are becoming more and more serious, and different forms of renewable energy are attracting more and more global attention. A solar cell is a device that directly converts solar energy into electrical energy, and is one of the main research goals of clean and renewable energy in various countries today. In the past ten years, the research on organic solar cells has attracted more and more attention, and has made great progress. Compared with inorganic photovoltaic devices, organic polymer photovoltaic devices have the advantages of low cost, simple process, light and thin, and large-scale preparation, and have great development pot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/30H10K30/20Y02E10/549
Inventor 王涛李伟闫宇公艳艳蔡金龙
Owner WUHAN UNIV OF TECH
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