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Method for preparing polymer solar cell

A solar cell and polymer technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as large fluctuations in the efficiency of polymer cells

Active Publication Date: 2010-09-08
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to many factors affecting the solvent atmosphere treatment, the efficiency of the regulated polymer battery fluctuates greatly. Therefore, a controllable solvent atmosphere treatment method is used to control the crystallinity of polythiophene and the phase separation morphology of the blended film to obtain stable high-efficiency solar energy. The battery method has not been reported yet

Method used

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  • Method for preparing polymer solar cell
  • Method for preparing polymer solar cell

Examples

Experimental program
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Effect test

experiment example 1

[0018] Experimental Example 1: At room temperature, P3HT and PCBM with a mass ratio of 1:1 were dissolved in o-dichlorobenzene (ODCB) solvent to form a mixed solution with a total concentration of 20 mg / ml, and then spin-coated with a spin coater. A 100nm film was obtained; the film was first placed in 1 times the saturated vapor pressure of tetrahydrofuran at room temperature for 5 seconds, and then the treated film was placed in 0.8 times the saturated vapor pressure of carbon disulfide for 15 seconds. Finally, a polymer solar cell is obtained after vapor-depositing an electrode with a thickness of 100 nanometers. The resulting pristine device had an average efficiency of 3.87%.

experiment example 2

[0019] Experimental example 2: At room temperature, P3HT and PCBM with a mass ratio of 1:2 were dissolved in o-dichlorobenzene (ODCB) solvent to form a mixed solution with a total concentration of 18 mg / ml, and then spin-coated with a spin coater. A 60nm film was obtained; the film was first placed in 1 times the saturated vapor pressure of tetrahydrofuran at room temperature for 5 seconds, and then the treated film was placed in 0.8 times the saturated vapor pressure of carbon disulfide for 15 seconds. Finally, a polymer solar cell is obtained after evaporating an electrode with a thickness of 80 nanometers. The resulting pristine device had an average efficiency of 2.91%.

experiment example 3

[0020] Experimental Example 3: At room temperature, P3HT and PCBM with a mass ratio of 2:1 were dissolved in o-dichlorobenzene (ODCB) solvent to form a mixed solution with a total concentration of 18 mg / ml, and then spin-coated with a spin coater. An 80nm film was obtained; the film was first placed in 1 times the saturated vapor pressure of tetrahydrofuran at room temperature for 5 seconds, and then the treated film was placed in 0.8 times the saturated vapor pressure of carbon disulfide for 15 seconds. Finally, a polymer solar cell is obtained after evaporating electrodes with a thickness of 120 nanometers. The resulting pristine device had an average efficiency of 3.11%.

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Abstract

The invention belongs to a method for preparing a polymer solar cell. Through a condition of non high-temperature heating, by adopting a method of controllable solvent atmosphere treatment, phase separation appearance of poly(3-hexyl)thiophene) and [6,6]-C61-phenyl methyl butyrate blend film can be optimized and crystallinity of poly(3-hexyl)thiophene) can be improved, and [6,6]-C61-phenyl methylbutyrate can be improved to form agglomerative phase about 10 nanometers, so that a stable high-efficiency solar cell can be obtained under white radiation. Conversion efficiency of the produced polymer solar cell by the method can reach 3.87 percent, but only 3.20 percent of the conversion efficiency can be achieved by heat annealing treatment, which proves that the polymer solar cell without heat annealing treatment can be obtained through the method.

Description

technical field [0001] The invention relates to a preparation method of a high-efficiency polymer solar cell. Background technique [0002] Polymer solar cells have become a hot topic in the research of renewable energy due to their advantages of low cost, flexibility, and easy preparation. In polymer solar cells based on soluble polythiophene (P3HT) / fullerene derivatives (PCBM) blend thin films, constructing highly crystalline polythiophene and controlling the phase separation scale of the two blends can greatly improve the efficiency of the cell (Advanced Functional Materials 2003, 13, 85). Generally, thermal annealing treatment is used to improve the crystallinity of polythiophene in the device, but this method easily leads to large-scale (above micron-scale) phase separation between the blend components in the film, which is not conducive to the improvement of device performance. In addition, thermal annealing at higher temperatures (>100°C) requires the protection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48C08J5/18C08L65/00
CPCY02E10/50Y02E10/549
Inventor 杨小牛唐浩为
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES