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Polymer film and preparation method and application thereof

A technology of polymer film and conjugated polymer, which is applied in the field of polymer solar cells, can solve the problems of easy residue of additives, lower battery performance, unfavorable flexible plastic solar cells, etc., and achieve good stability, efficient transmission and collection, and low cost cheap effect

Inactive Publication Date: 2017-02-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermal annealing can easily lead to large-scale phase separation between the blended components in the film, and higher temperatures are not conducive to the preparation of flexible plastic solar cells; additives tend to remain inside the blended film, resulting in an S-shaped J-V curve and reducing battery performance.

Method used

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  • Polymer film and preparation method and application thereof
  • Polymer film and preparation method and application thereof
  • Polymer film and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 (as comparative example)

[0031] 1) Sputtered with doped indium SnO 2 (ITO) transparent conductive glass was ultrasonically cleaned twice with detergent, tap water, deionized water, acetone, and isopropanol in sequence, dried with nitrogen gas, and moved into a glove box for later use. Titanium acetylacetonate (TIPD) was diluted 20 times with isopropanol, spin-coated on ITO at 4000 rpm, and annealed on a hot stage at 150°C for 10 minutes;

[0032] 2) Dissolved active layer solution PTB7-Th:PC 71 BM (1:1.5w / w, polymer concentration 10mg / mL, chlorobenzene) was spin-coated on the ITO / TIPD substrate at 1700rpm to obtain a film of 80-120nm;

[0033] 3) Isopropanol is post-treated on the active layer by spin coating at 4000rpm;

[0034] 4) Move the substrate into the vacuum coating machine, at 5×10 -4 Molybdenum trioxide with a thickness of 10 nanometers and aluminum electrodes with a thickness of 100 nanometers were sequentially evaporated under Pa.

[003...

Embodiment 2

[0037] 3) O-chlorophenol was dissolved in isopropanol at a volume ratio of 0.1%, and spin-coated on the active layer at 4000 rpm for post-treatment.

[0038] Steps 1), 2), and 4) are all the same as in Example 1.

[0039] Under the simulated sunlight irradiation of 100 milliwatts per square centimeter, the prepared device has an open-circuit voltage of 0.78 volts, a short-circuit current of 18.06 milliamperes per square centimeter, a fill factor of 66.27 percent, and a conversion efficiency of 9.34 percent. Figure 6 It is the current-voltage curve of the device without light irradiation and under the simulated sunlight irradiation of 100 mW / cm2.

Embodiment 3

[0041] 3) O-chlorophenol was dissolved in isopropanol at a volume ratio of 0.2%, and spin-coated on the active layer at 4000 rpm for post-treatment.

[0042] Steps 1), 2), and 4) are all the same as in Example 1.

[0043] Under 100 milliwatts per square centimeter of simulated sunlight, the prepared device has an open circuit voltage of 0.78 volts, a short circuit current of 18.67 milliamperes per square centimeter, a fill factor of 65.62%, and a conversion efficiency of 9.51%. Figure 7 It is the current-voltage curve of the device without light irradiation and under the simulated sunlight irradiation of 100 mW / cm2.

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Abstract

The invention discloses a polymer film and a preparation method and application thereof and belongs to the technical field of a polymer solar battery. According to the polymer film, the method and the application, through utilization of a feature that chlorophenol selectively dissolves receptors: fullerene derivative and does not dissolve donors: polymer, postprocessing is carried out on conjugated polymer-fullerene derivative blended film by employing o-chlorophenol alcoholic solution, thereby preparing the polymer film with adjustable receptor vertical concentration distribution. After the prepared blended film is applied to a reverse polymer battery, a structure that donors are gathered at an anode side and the receptors are gathered at a cathode side is formed, and relatively independent electron and hole transfer channels are formed in an active layer. Separation of excitons and transfer of charge carriers are effectively improved, thereby clearly improving the short circuit current and conversion efficiency of the battery. The battery with a reverse structure has better stability. Moreover, the polymer film, the method and application have the advantages of simple preparation technology, easy operation, low cost and high repeatability.

Description

technical field [0001] The invention belongs to the technical field of polymer solar cells, and in particular relates to a polymer film and its preparation method and application. Background technique [0002] In recent years, polymer solar cells based on conjugated polymers and fullerene derivatives have attracted attention due to their simple structure, low cost, light weight, bendability, and industrial roll-to-roll process. By optimizing the design, synthesizing new polymer donor materials and fullerene derivative acceptor materials, and optimizing each transport layer, the conversion efficiency of bulk heterojunction polymer solar cells has been increased to more than 11%. However, due to the corrosiveness of the PEDOT:PSS in contact with the positive electrode and the easy oxidation of the negative electrode with low work function, the traditional structure of the polymer solar cell causes poor stability of the battery; and due to the surface potential energy of the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48C08J5/18
CPCC08J5/18H10K71/12H10K85/00H10K30/00Y02E10/549
Inventor 谭占鳌王雅萍史珍珍
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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