Surface modification method for anode of polymer solar cell

A solar cell and surface modification technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low photoelectric conversion efficiency and low open circuit voltage, and achieve the goal of improving photoelectric conversion efficiency, increasing open circuit voltage, and increasing open circuit voltage. Effect

Inactive Publication Date: 2010-12-01
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The conjugated polymer poly(3-hexyl)thiophene (P3HT) and C 60 The composite thin film has excellent photoresponsiveness and carrier transport properties, and has become one of the most promising photoactive materials for polymer solar cells, but it is not compatible with other photoactive materials such as P3HT / [6,6]-C 60 Compared with methyl phenylbutyrate (PCBM), there are disadvantages such as lower open circuit voltage and lower photoelectric conversion efficiency.

Method used

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  • Surface modification method for anode of polymer solar cell
  • Surface modification method for anode of polymer solar cell
  • Surface modification method for anode of polymer solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. Preparation of polymer solar cell I and performance testing

[0031] 1. Preparation of polymer solar cells

[0032] 1) Preparation of modified anode

[0033] First engrave the ITO on indium tin oxide (ITO) into 2mm wide and 15mm long electrodes, clean and dry the etched thin strips of ITO conductive glass with a certain width, and place the clean ITO conductive glass on the spinner. On the support of the coating machine, spin-coated a layer of polythiophene derivative-doped polystyrene sulfonic acid aqueous solution (PEDOT:PSS) on the ITO, and dried to obtain a PEDOT:PSS film with a thickness of 25nm; then on the PEDOT:PSS film Spin coating P3HT and C on 60 Mixed solution, P3HT and C in the mixed solution 60 The mass ratio is 1:1, the solvent is o-dichlorobenzene, and the photoelectric active layer P3HT / C with a thickness of 80nm is obtained. 60 .

[0034] Then put the above sample in H 2 S, HCl, H 2 In the mixed gas of O, keep for 10 minutes, take it out, and dry i...

Embodiment 2

[0045] Example 2: Preparation and performance testing of polymer solar cell II

[0046] 1. Preparation of polymer solar cells

[0047] 1) Preparation of modified anode

[0048] First engrave the ITO on indium tin oxide (ITO) into 2mm wide and 15mm long electrodes, clean and dry the etched thin strips of ITO conductive glass with a certain width, and place the clean ITO conductive glass on the spinner. On the support of the coating machine, spin-coated a layer of polythiophene derivative-doped polystyrene sulfonic acid aqueous solution (PEDOT:PSS) on the ITO, and dried to obtain a PEDOT:PSS film with a thickness of 25nm; then on the PEDOT:PSS film Spin coating P3HT and C 60 P3HT and C in the mixed solution 60 The mass ratio is 1:1, the solvent is o-dichlorobenzene, and the photoelectric active layer P3HT / C with a thickness of 100 nm is obtained. 60 .

[0049] Then put the above sample in H 2 S, HCl, H 2 Keep it in the O mixed gas for 30 minutes, take it out, and vacuum dry.

[0050] Wh...

Embodiment 3

[0056] Example 3. Preparation of polymer solar cell III and performance testing

[0057] 1. Preparation of polymer solar cells

[0058] 1) Preparation of modified anode

[0059] First engrave the ITO on indium tin oxide (ITO) into 2mm wide and 15mm long electrodes, clean and dry the etched thin strips of ITO conductive glass with a certain width, and place the clean ITO conductive glass on the spinner. On the support of the coating machine, spin-coated a layer of polythiophene derivative-doped polystyrene sulfonic acid aqueous solution (PEDOT:PSS) on the ITO, and dried to obtain a PEDOT:PSS film with a thickness of 25nm; then on the PEDOT:PSS film Spin coating P3HT and C 60 P3HT and C in the mixed solution 60 The mass ratio is 1:1, the solvent is o-dichlorobenzene, and the photoelectric active layer P3HT / C with a thickness of 200nm is obtained. 60 .

[0060] Then put the above sample in H 2 S, HCl, H 2 Keep it in the O mixed gas for 60 minutes, take it out, and vacuum dry.

[0061] Wh...

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Abstract

The invention discloses a surface modification method for an anode of a polymer solar cell. The method comprises the following steps of: 1) spin-coating (3,4-ethylenedioxythiophene) doped polystyrolsulfon acid solution on an indium tin oxid conducting anode, drying to obtain a poly(3,4-ethylenedioxythiophene) doped polystyrolsulfon acid layer, and arranging a photoelectric active layer on the poly(3,4-ethylenedioxythiophene) doped polystyrolsulfon acid layer; and 2) putting the anode treated by the step 1) into mixed gas of H2S, HCl and H2O for 10 to 200 minutes, wherein the volume ratio of the H2S to the HCl to the H2O is 1: (0.01-0.3): (0.001-0.01). The ITO anode is modified by the method provided by the invention, and a thin and low-roughness IN2S3 layer is formed on the surface of the conducting ITO anode; the modification layer has a higher work function; and the method can improve the open-circuit voltage of the polymer solar cell so as to improve the photoelectric conversion efficiency of the solar cell.

Description

Technical field [0001] The invention relates to a method for modifying the anode surface of a polymer solar battery. Background technique [0002] Solar energy is the most ideal alternative energy source for mankind in the future, and solar cells that convert solar energy into electrical energy are currently a hot spot in research in various countries. Polymer solar cells have the unmatched advantages of inorganic solar cells, such as low price, flexibility, easy processing, and large area preparation. [0003] The structure of a common polymer solar cell generally includes an anode, a photoelectric active layer, and a cathode. The anode generally includes a glass or flexible substrate, an anode conductive layer ITO and an anode buffer layer PEDOT:PSS, and the cathode is generally a metal electrode. The work function of the electrode is one of the important factors that determine the open circuit voltage of the battery. The efficiency and service life of the polymer solar cell are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/46H01L51/44H01L51/42
CPCY02E10/549
Inventor 刘瑞刚刘伟丽王文黄勇
Owner INST OF CHEM CHINESE ACAD OF SCI
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