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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: 2008-01-30
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

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Experimental program
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Embodiment 1

[0015] Embodiment 1: at room temperature, P3HT is dissolved in good solvent o-dichlorobenzene (ODCB) under stirring conditions, and is made into a solution of 8.0 mg / ml; then the poor solvent n-hexane is slowly added dropwise to the solution obtained above 10 times. alkane, the volume ratio of the amount of poor solvent added to the good solvent is 0.03:1-0.1:1, and the total amount added is 0.5 ml of n-hexane / ml of ODCB solution. After each addition of the poor solvent, let the solution stir for 30 minutes at a stirring speed of 200 rpm, so that the P3HT in the solution reaches the dissolution equilibrium. Carry out 12 hours, add the PCBM equivalent to the mass of 1 times the amount of P3HT dissolved in the solution into the solution, and stir for 6 hours at a stirring speed of 500rpm to prepare a mixed solution with a P3HT:PCBM mass ratio of 1:1, Finally, the obtained solution is spin-coated with a rotary film-spinning machine to form a film, and a polymer solar cell is obta...

Embodiment 2

[0016] Embodiment 2: at room temperature, P3HT is dissolved in good solvent o-dichlorobenzene (ODCB) under stirring conditions, and is made into a solution of 10.0 mg / ml; then the poor solvent ring is slowly added dropwise to the solution obtained above 15 times. For hexane, the volume ratio of the amount of poor solvent added to the good solvent is 0.02:1-0.1:1, and the total amount added is 1 ml of cyclohexane / ml of ODCB solution. After each addition of the poor solvent, let the solution stir for 10 minutes at a stirring speed of 100 rpm, so that the P3HT in the solution reaches the dissolution equilibrium. When the last poor solvent is added, the solution is stirred at a speed of 100 rpm. Carry out 6 hours, add the PCBM equivalent to the mass of 0.5 times the amount of P3HT dissolved in the solution into the solution, and stir for 2 hours at a stirring speed of 1000 rpm to prepare a mixed solution with a P3HT:PCBM mass ratio of 2:1, Finally, the obtained solution is spin-co...

Embodiment 3

[0017]Embodiment 3: at room temperature, P3HT is dissolved in good solvent o-dichlorobenzene (ODCB) under stirring condition, and is made into a solution of 5.0 mg / ml; Then, in the solution of above-mentioned gained, the poor solvent alcohol is slowly added dropwise 5 times. , the volume ratio of the amount of poor solvent added to the good solvent is 0.02:1-0.1:1, and the total amount of the added amount is 0.2 ml of alcohol / ml of ODCB solution. After each addition of the poor solvent, let the solution stir for 60 minutes at a stirring speed of 500 rpm, so that the P3HT in the solution reaches the dissolution equilibrium. After adding the poor solvent for the last time, let the solution in the dark place at a stirring speed of 500 rpm. Carry out 24 hours, add the PCBM equivalent to the mass of 2 times the amount of P3HT dissolved in the solution into the solution, and stir for 16 hours at a stirring speed of 200rpm to prepare a mixed solution with a P3HT:PCBM mass ratio of 1:2...

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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 a polythiophene / fullerene and its derivative blend film by an anneal-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 low cost, flexibility, and large area. In polymer solar cells based on soluble polythiophene (P3HT) / fullerene and its derivative blend films, the construction of highly crystalline polythiophene often leads to a substantial increase in cell efficiency (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 blended components in the thin film, which is...

Claims

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Application Information

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IPC IPC(8): H01L51/48C08L65/00
CPCY02E10/50Y02E10/549
Inventor 杨小牛黎立桂
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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