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Method for preparing polymer solar battery

A technology of solar cells and polymers, which is applied in the field of polymer solar cells and can solve the problems of low charge collection efficiency

Inactive Publication Date: 2009-06-03
IRICO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of low charge collection efficiency of solar cells in the prior art, the present invention proposes a method for preparing polymer solar cells

Method used

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  • Method for preparing polymer solar battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The operation of the first three steps is the same as the processing method of the prior art, and the fourth step is:

[0025] 4) Put the polymer solar cell device whose active layer has been heated and annealed into a vacuum coating machine for evaporation. When the vacuum degree is higher than 1×10 -4 Start to evaporate LiF at Pa, and control the evaporation rate of LiF by adjusting the heating current on the film thickness monitor. The LiF evaporation rate is 1-2 The thickness is 1.5nm; finally the Al electrode is evaporated, the thickness is 150nm, and the effective area of ​​the battery is 12mm 2 , the device structure is ITO / PEDOT:PSS(30nm) / electron donor polymer BEH-co-MEH-PPV:PCBM=1:3(200nm) / LiF(1.5nm) / Al(150nm) polymer Solar battery.

Embodiment 2

[0027] The operation of the first three steps is the same as the processing method of the prior art, and the fourth step is:

[0028] 4) Put the polymer solar cell device whose active layer has been heated and annealed into a vacuum coating machine for evaporation. When the vacuum degree is higher than 1×10 -4 Start to evaporate LiF at Pa, and control the evaporation rate of LiF by adjusting the heating current on the film thickness monitor. The LiF evaporation rate is 1-2 The thickness is 1.2nm; finally the Al electrode is evaporated, the thickness is 150nm, and the effective area of ​​the battery is 12mm 2 , the device structure is ITO / PEDOT:PSS(30nm) / electron donor polymer BEH-co-MEH-PPV:PCBM=1:3(200nm) / LiF(1.2nm) / Al(150nm) polymer Solar battery.

Embodiment 3

[0030] The operation of the first three steps is the same as the processing method of the prior art, and the fourth step is:

[0031] 4) Put the polymer solar cell device whose active layer has been heated and annealed into a vacuum coating machine for evaporation. When the vacuum degree is higher than 1×10 -4 Start to evaporate LiF at Pa, and control the evaporation rate of LiF by adjusting the heating current on the film thickness monitor. The LiF evaporation rate is 1-2 The thickness is 1nm; finally the Al electrode is evaporated, the thickness is 150nm, and the effective area of ​​the battery is 12mm 2 , the device structure is ITO / PEDOT:PSS(30nm) / electron donor polymer BEH-co-MEH-PPV:PCBM=1:3(200nm) / LiF(1.0nm) / Al(150nm) polymer Solar battery.

[0032] With halogen lamp as light source, at 100mW / cm 2 Under the light intensity, the performance of the polymer thin film solar cell prepared by the method of the present invention was tested, including open circuit voltage, sh...

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Abstract

The invention belongs to a method for preparing a polymer solar battery. The polymer solar battery device adopts transparent indium tin oxide ITO as the anode which is modified by polythiophene derivative mixed with poly (3,4-dioxygen ethythiophene): poly (p-styrenesulfonic acid) water solution (PEDOT:PSS); the active layer is a mixture of electron donor polymer BEH-co-MEH-PPV:PCBM; and metal adopts a compound cathode LiF / Al as the cathode, that is, a thin layer LiF is inserted between a photoactive layer and Al, so that excellent ohmic contact is formed between metal electrodes and the photoactive layer, the impedance of the system is reduced, and the performance of the polymer solar battery can be effectively improved.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a method for preparing polymer solar cells (Polymer Solar Cells; PSCs). Background technique [0002] Compared with traditional inorganic solar cells, polymer solar cells have simple preparation process and low cost. They can be prepared by spin coating, spray coating, scrape coating and other methods. Industrial production can be realized in the continuous printing process to make ultra-thin, large-area flexible devices. and other advantages have attracted much attention. [0003] In 1991, scientists represented by Gratzel used bipyridyl ruthenium-modified nanocrystalline TiO 2 Electrodes, so that its photoelectric conversion efficiency has a qualitative leap, approaching or even exceeding the photoelectric conversion efficiency of silicon solar cells. In 1992, the research group of Professor Alan J. Heeger in the United States discovered conjugated polymers and C 60 B...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48
CPCY02E10/50Y02E10/549
Inventor 王香
Owner IRICO
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