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A self-assembled polymer solar cell cathode modification material and modification method thereof

A technology for modifying solar cells and cathodes, which is applied to circuits, photovoltaic power generation, electrical components, etc., can solve the problems of increasing the overall time of polymer solar cells, difficult to control the operation process, etc., and achieves a simple and easy-to-control preparation method, low cost, and low cost. blocking effect

Inactive Publication Date: 2016-05-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used LiF modification layer needs to be vacuum evaporated, and the effective thickness is about 1nm, which makes the operation process difficult to control
The widely used ZnO, TiO 2 and other n-type semiconductor nanoparticles need to be synthesized by sol-gel methods, which increases the overall time for the preparation of polymer solar cells

Method used

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  • A self-assembled polymer solar cell cathode modification material and modification method thereof
  • A self-assembled polymer solar cell cathode modification material and modification method thereof
  • A self-assembled polymer solar cell cathode modification material and modification method thereof

Examples

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Effect test

Embodiment 1

[0035] The transparent conductive glass sputtered with indium tin oxide (ITO) was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol, dried with nitrogen, and spin-coated with PEDOT:PSS at a speed of 2000rpm. solution, baked and annealed at 150°C for 15 minutes, and cooled naturally to obtain an anode modification layer. Then P3HT at a total concentration of 20 mg / mL was mixed with PC 60 A mixed solution of BM (with a mass ratio of 1:1) (the solvent is o-dichlorobenzene) was directly spin-coated on the above-mentioned anode modification layer at a speed of 800 rpm, and after solvent annealing, a photoelectric active layer was formed. Finally, at 5×10 -5 100nm-thick aluminum was vacuum-evaporated under Pascal as the cathode. In the obtained polymer solar cell, the thickness of PEDOT:PSS is The prepared device has an open circuit voltage of 0.55 volts, a short circuit current of 7.09 milliamperes per square centimeter, a fill fa...

Embodiment 2

[0037] The transparent conductive glass sputtered with indium tin oxide (ITO) was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol, dried with nitrogen, and spin-coated with PEDOT:PSS at a speed of 2000rpm. solution, baked and annealed at 150°C for 15 minutes, and cooled naturally to obtain an anode modification layer. Then a PVDF solution with a concentration of 0.1 mg / mL (solvent is dimethylacetamide) was added to a total concentration of 20 mg / mL of P3HT and PC 60 BM (mass ratio is 1:1) in the mixed solution (solvent is o-dichlorobenzene) (in which PVDF solution and P3HT and PC 60 The volume ratio of the mixed solution of BM is 1:360), after being fully stirred, it is directly spin-coated on the above-mentioned anode modification layer at a speed of 800rpm, and after solvent annealing, a photoelectric active layer and a cathode modification layer are formed. Finally, at 5×10 -5 100nm-thick aluminum was vacuum-evaporated und...

Embodiment 3

[0039] The transparent conductive glass sputtered with indium tin oxide (ITO) was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol, dried with nitrogen, and spin-coated with PEDOT:PSS at a speed of 2000rpm. solution, baked and annealed at 150°C for 15 minutes, and cooled naturally to obtain an anode modification layer. Then a PVDF solution with a concentration of 0.1 mg / mL (solvent is dimethylacetamide) was added to a total concentration of 20 mg / mL of P3HT and PC 60 BM (mass ratio is 1:1) in the mixed solution (solvent is o-dichlorobenzene) (in which PVDF solution and P3HT and PC 60 The volume ratio of the mixed solution of BM is 1:20), and it is directly spin-coated on the above-mentioned anode modification layer at a speed of 800 rpm, and after solvent annealing, a photoelectric active layer and a cathode modification layer are formed. Finally, at 5×10 -5 100nm-thick aluminum was vacuum-evaporated under Pascal as the cathod...

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Abstract

The invention belongs to the technical field of solar cell cathode modification, in particular to a self-assembled polymer solar cell cathode modification material and a modification method thereof. The cathode modification material of the polymer solar cell of the present invention is a polyvinylidene fluoride PVDF film formed by self-assembly. The preparation method is as follows: directly drop PVDF solution into the active layer solution, fully stir, and obtain a spontaneously separated cathode modification layer by solvent annealing after one-time spin coating. The introduction of PVDF solution reduces the barrier of electron collection in polymer solar cells and realizes the efficient collection of electrons; the spontaneously separated PVDF film acts as a buffer layer to effectively reduce the recombination of holes and electrons, reduce the leakage current, and make polymer solar cells The photoelectric conversion efficiency of the battery is improved. In addition, the polymer solar cell has the characteristics of simple manufacturing process, low cost, good experiment repeatability, suitable for large-scale industrial production and the like.

Description

technical field [0001] The invention belongs to the technical field of solar cell cathode modification, in particular to a self-assembled polymer solar cell cathode modification material and a modification method thereof. Background technique [0002] Energy is an important material basis for human survival and development. However, with the increase in the amount of energy used by humans, especially fossil energy, the constraints of energy on human economic and social development and the impact on resources and the environment are becoming more and more obvious. Due to the limited and non-renewable reserves of traditional fossil fuel energy, coal, oil and natural gas, as the amount of resources continues to decrease, the cost continues to rise, and the problem of energy supply security is becoming increasingly prominent. On the other hand, the use of fossil energy seriously affects air quality, accelerates climate warming, and leads to environmental degradation. As a clea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/44H01L51/46H01L51/48
CPCH10K71/12H10K85/141H10K30/81Y02E10/549Y02P70/50
Inventor 谭占鳌于露李聪侯旭亮林俊
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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