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Polymer solar cell and preparation method thereof

A technology of solar cells and polymers, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of affecting the photoelectric conversion efficiency of batteries, affecting the electrical properties of solar cell device resistance, open circuit voltage fill factor, and low photoelectric conversion efficiency, etc. , to achieve the effect that the fill factor does not decrease, the photoelectric conversion efficiency increases, and the open circuit voltage does not decrease

Active Publication Date: 2013-09-25
CHINA LUCKY FILM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Chinese patent application No. 201210101153.6 discloses a solar cell, which is doped with metal nanoparticles-graphene oxide in the hole transport layer, and utilizes the effect of localized enhancement of the surface plasmon of the metal nanoparticles to increase However, due to the direct contact between the metal nanomaterial and the photoactive layer, the electrical properties such as the resistance, open circuit voltage, and fill factor of the solar cell device are affected, and the photoelectric conversion efficiency of the cell is affected.
"Enhancement of Donor-Acceptor Polymer Bulk Heterojunction SolarCell Power Conversion Efficiencies by Addition of Au Nanoparticles" published by Alan J. Heeger (Angew. Chem. Int. Ed., 2011, 50, 5519-5523) proposes the use of light in polymer solar cells Doping Au nanoparticles in the active layer can improve the photoelectric conversion efficiency, because only Au nanoparticles are doped in the photoactive layer, the photoelectric conversion efficiency is less improved

Method used

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  • Polymer solar cell and preparation method thereof
  • Polymer solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The first step is to prepare a transparent anode: ultrasonically clean the G / ITO with electrode pattern etched with concentrated hydrochloric acid for 10 minutes in deionized water, absolute ethanol, acetone, and isopropanol, blow dry with nitrogen, and treat with UV / ozone 20min.

[0040] In the second step, the first hole transport layer is prepared on the transparent anode, and the Ag nanoparticles with a particle size of 50nm are doped in the PEDOT:PSS aqueous solution to prepare a 5.0% mixed solution by weight, which is coated by spin coating , and then dried at 130° C. for 30 minutes to form a film to form a first hole transport layer with a thickness of 60 nm.

[0041] The third step is to prepare the second hole transport layer on the first hole transport layer, the second hole transport layer is PEDOT:PSS coating solution, which is coated by spin coating, and then dried at 150°C for 10min to form a film , forming a second hole transport layer with a thickness o...

Embodiment 2

[0046] The first hole transport layer was prepared on the transparent anode, and Ag nanorods with a diameter of 2nm and a length of 20nm were doped in PEDOT:PSS aqueous solution to prepare a mixed solution with a weight content of 0.1%. Coating was performed by spin coating, and then dried at 130° C. for 30 minutes to form a film to form a first hole transport layer with a thickness of 30 nm. The other preparation methods were the same as in Example 1.

[0047] See Table 1 for the photoelectric performance test data of the polymer solar cell prepared by the above method.

Embodiment 3

[0049] Under nitrogen protection, a photoactive layer was prepared on the second hole transport layer. Au nanosheets with a thickness of 20nm and a side length of 50nm were doped into the semiconductor active material to prepare an active liquid with a weight content of 10%. Coating by spin coating, drying at room temperature for 30min, forming a photoactive layer film with a thickness of 150nm (the donor material in the semiconductor active material is PBDTTT-C-T, and the acceptor material is PC 71 BM), other preparation methods are the same as in Example 1.

[0050] See Table 1 for the photoelectric performance test data of the polymer solar cell prepared by the above method.

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Abstract

Provided are a polymer solar cell and a preparation method thereof. The cell comprises a transparent positive pole, hole transporting layers, an optical active layer and a metal negative pole, wherein the hole transporting layers comprise a first hold transporting layer and a second hold transporting layer, the first hole transporting layer is arranged on the surface of the transparent positive pole, and metal nano materials are doped in the first hole transporting layer; the second hold transporting layer is arranged on the surface of the first hole transporting layer; and metal nano materials are doped in the optical active layer. According to the polymer solar cell and the preparation method, the exposed metal nano materials in the first hole transporting layer are coated, the exposed metal nano materials in the first hole transporting layer and the optical active layer in the cell form good ohmic contact, the electrical property of the cell are prevented from being influenced due to leading-in of the metal nano materials, the fact that open-circuit voltage and filling factors of the cell are not reduced is guaranteed, and meanwhile photoelectric conversion efficiency is improved by more than 10%.

Description

technical field [0001] The invention belongs to the field of organic solar cells, in particular to a polymer solar cell and a preparation method thereof. Background technique [0002] Polymer solar cells are composed of polymer materials as the core part. Based on the photovoltaic effect of polymer semiconductors, polymer materials absorb photons to realize photoelectric conversion solar cells. Due to the low synthesis cost of polymer materials, easy modulation of functions, good flexibility and film-forming properties, polymer solar cells are inexpensive and have diverse uses, which has become a new direction for the development of solar cells. The optimal thickness of the photoactive layer of polymer solar cells is between 80 and 200nm. Such a thin layer leads to low light absorption, which becomes an important factor restricting the photoelectric conversion efficiency. Therefore, how to improve the photoelectric conversion efficiency of the cell without increasing the th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCY02E10/549
Inventor 刘贤豪李秀贞于正森侯丽新
Owner CHINA LUCKY FILM CORP
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