Process for producing polymer solar battery

A technology of solar cells and polymers, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as difficulties and complex crystallization properties

Inactive Publication Date: 2009-08-26
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the crystallization of P3HT, it is complicated and difficult to control its crystallization properties in blended films by mixed solvents, so the method of using mixed solvents to improve the device efficiency of P3HT / fullerene and its derivative polymer solar cells Not yet reported

Method used

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  • Process for producing polymer solar battery
  • Process for producing polymer solar battery
  • Process for producing polymer solar battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: At room temperature, P3HT was dissolved in the good solvent o-dichlorobenzene (ODCB) under agitation to form a solution of 8.0 mg / ml; Alkanes, the volume ratio of the amount of poor solvent added to the good solvent is 0.03:1-0.1:1 each time, and the total amount of addition is 0.5 ml of n-hexane / ml ODCB solution. After adding the poor solvent each time, let the solution stir for 30 minutes at a stirring speed of 200rpm, so that the P3HT in the solution can reach the dissolution equilibrium. Carry out 12 hours, then add the PCBM that is equivalent to the dissolved P3HT amount in 1 times solution in the solution, and stir 6 hours under the stirring speed of 500rpm, be made into the mixed solution that P3HT:PCBM mass ratio is 1:1, Finally, the obtained solution is spin-coated to form a film with a spin film spinner, and a polymer solar cell is obtained after evaporating electrodes. The resulting pristine device efficiency was 3.9%.

Embodiment 2

[0016] Example 2: At room temperature, P3HT was dissolved in the good solvent o-dichlorobenzene (ODCB) under stirring conditions to form a solution of 10.0 mg / ml; For hexane, the volume ratio of the amount of poor solvent added to the good solvent is 0.02:1-0.1:1 each time, and the total amount added is 1 ml of cyclohexane / ml of ODCB solution. After each drop of the poor solvent, let the solution stir for 10 minutes at a stirring speed of 100rpm, so that the P3HT in the solution can reach a dissolution equilibrium. Carry out 6 hours, add the PCBM that is equivalent to the dissolved P3HT amount in the solution of 0.5 times to the solution again, and stir 2 hours under the stirring speed of 1000rpm, be made into the mixed solution that P3HT:PCBM mass ratio is 2:1, Finally, the obtained solution is spin-coated to form a film with a spin film spinner, and a polymer solar cell is obtained after evaporating electrodes. The resulting pristine device has an average efficiency of 2.9%...

Embodiment 3

[0017]Example 3: At room temperature, P3HT was dissolved in the good solvent o-dichlorobenzene (ODCB) under stirring conditions to form a solution of 5.0 mg / ml; then the poor solvent alcohol was slowly added dropwise to the solution obtained above for 5 times , the volume ratio of the amount of poor solvent added to the good solvent is 0.02:1-0.1:1 each time, and the total amount of addition is 0.2 ml of alcohol / ml of ODCB solution. After adding the poor solvent each time, let the solution stir for 60 minutes at a stirring speed of 500rpm, so that the P3HT in the solution can reach the dissolution equilibrium. Carry out 24 hours, then add the PCBM that is equivalent to the dissolved P3HT amount in 2 times solution in the solution, and stir 16 hours under the stirring speed of 200rpm, be made into the mixed solution that P3HT:PCBM mass ratio is 1:2, Finally, the obtained solution is spin-coated to form a film with a spin film spinner, and a polymer solar cell is obtained after ...

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Abstract

The invention belongs to a method producing solar cell by polymer, greatly improving crystallinity of P3HT in a blending film of a P3HT and C60 fullerene or a derivative PCBM of P3HT and ensuring whisker of P3HT in the blending film which is in a micro length to be uniformly dispersed on the whole film and having a nano-sized separation distance. By using the method, the transferring efficiency of solar cell arrives at 3.9 percent while the transferring efficiency of solar cell processed by thermal annealing can only reach 3.7 percent, which shows that through the method the high performed and non-annealed polymer solar cell can be produced by one step.

Description

technical field [0001] The invention relates to a method for preparing a polymer solar cell, in particular to a method for preparing a polymer solar cell based on polythiophene / fullerene and its derivative blend film by an annealing-free method. Background technique [0002] Polymer solar cells have become a hot spot in the field of clean and renewable energy research in recent years due to their cheapness, flexibility, and large area. In polymer solar cells based on soluble polythiophene (P3HT) / fullerene and its derivatives blend films, the construction of highly crystalline polythiophene can often greatly improve the efficiency of the cell (Advanced Functional Materials 2003, 13 , 85; Nature Materials 2005, 4, 864). Traditionally, post-annealing treatment is often used to improve the crystallinity of polythiophene in devices. However, this method easily leads to large-scale (above micron-scale) phase separation between the blend components in the film, which is not condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/48C08L65/00
CPCY02E10/549
Inventor 杨小牛黎立桂
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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