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Reciprocal form structure polymer solar cell and preparation method thereof

A technology of structural polymers and solar cells, which is applied in the field of polymer solar cells, can solve the problems of increased surface roughness of ITO, increased device series resistance, and decreased energy conversion efficiency, so as to simplify the pre-processing process, reduce series resistance, The effect of improving energy conversion efficiency

Inactive Publication Date: 2009-11-11
JILIN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this battery has a conversion efficiency of 4 to 5%, the battery made of this structure has many shortcomings.
For example: PSS, as an organic acid, will corrode the surface of ITO and increase the roughness of the ITO surface, resulting in an increase in the series resistance of the device, a decrease in the photogenerated current, and a decrease in energy conversion efficiency.
In addition, LiF is used as the cathode buffer layer, and its optimal thickness is 0.6-1.2nm. When the thickness is greater than 1.2nm, LiF as an insulator increases the series resistance of the device, resulting in a decrease in the photogenerated current and lower energy conversion efficiency. decline

Method used

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  • Reciprocal form structure polymer solar cell and preparation method thereof
  • Reciprocal form structure polymer solar cell and preparation method thereof
  • Reciprocal form structure polymer solar cell and preparation method thereof

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Embodiment 1

[0028] A.

[0029] Cut 15mm x 20mm ITO glass and put it into a beaker. Use acetone, ethanol, and deionized water to ultrasonically clean them for 15 minutes. After cleaning, dry them with dry nitrogen and place them in a petri dish.

[0030] B.

[0031] 1) Put 10ml of Ti(OC 4 h 9 ) 4 Add dropwise to 90ml of absolute ethanol under vigorous stirring, then add dropwise 10ml of glacial acetic acid, and stir for 30 minutes to obtain a uniform and transparent light yellow solution; then add 10ml of acetylacetone (Tianjin Chemical Reagent Factory), and stir for 30 minutes. 10ml of deionized water was slowly added dropwise to the above solution at a rate of 2ml / min, and the stirring was continued for 1h to obtain a uniform and transparent light yellow sol, which was left to age for 7 hours.

[0032] 2) Prepare TiO from the aged sol on cleaned and dried ITO glass 2 Thin film, the thickness of film is 30nm, and the method for making thin film adopts spin-coating, and rotation spee...

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Abstract

The invention belongs to the technical field of polymer solar cells and particularly relates to a reciprocal form electrode polymer solar cell using TiO2 as an electronic transmission layer, CuPc as a cavity transmission layer and a preparation method thereof. The method includes the steps of: using sol-gel technology to grow a layer of uniform and compact nanocrystal titanium dioxide (TiO2) film on an ITO glass substrate, then spin-coating a layer of P3HT:PCBM solution dissolved by dichlorobenzene, after annealing, using thermal evaporation to grow a layer of CuPc with certain thickness and finally evaporating Au electrode. The polymer solar cell prepared by utilizing the method solves two problems of the traditional polymer solar cell, namely that the mixed solution of 3, 4-EDOT and polystyrolsulfon acid corrode the surface of ITO glass, and the excessive thinness of cathode buffer layer LiF causes the operating process to be difficult to be controlled accurately.

Description

technical field [0001] The invention belongs to the technical field of polymer solar cells, in particular to a solar cell using TiO 2 The invention discloses a polymer solar cell with inverted electrodes, CuPc used as an electron transport layer, CuPc as a hole transport layer, and a preparation method thereof. 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 solar cells based on polytrihexylthiophene (P3HT) / fullerene derivatives (PCBM) blend films, the structure of ITO / PEDOT:PSS / P3HT:PCBM / LiF / Al is traditionally adopted. Although this battery has a conversion efficiency of 4-5%, the battery made with this structure has many disadvantages. For example: PSS, as an organic acid, will corrode the ITO surface and increase the roughness of the ITO surface, resulting in an increase in the series resistance of the device, a decrease i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCY02E10/50Y02E10/549
Inventor 沈亮陈维友阮圣平张歆东郭文滨刘彩霞陶晨
Owner JILIN UNIV
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