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A preparation method of Bi2O2S coated nanorod array and its application in solar cell

A nanorod array and nanorod technology, applied in the field of solar cells, can solve problems such as easy generation of surface defects, and achieve the effects of improving charge transfer efficiency, strong visible light absorption range, and improving defects

Active Publication Date: 2019-01-15
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, zinc oxide is a wide-bandgap semiconductor that can only absorb ultraviolet light, and is prone to surface defects during the synthesis process; thus limiting the application of zinc oxide in solar cells

Method used

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  • A preparation method of Bi2O2S coated nanorod array and its application in solar cell
  • A preparation method of Bi2O2S coated nanorod array and its application in solar cell
  • A preparation method of Bi2O2S coated nanorod array and its application in solar cell

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Embodiment 1

[0038] The structure of the organic solar cell device in which the electron transport layer is coated zinc oxide nanorods in this example is: ITO / ZnO:Bi 2 o 2 S / P3HT:PCBM / MoO 3 / Ag.

[0039] The preparation process of the appeal doped organic solar cell is as follows:

[0040] Step 1. Use detergent, deionized water, titanium tetrachloride aqueous solution, acetone, absolute ethanol, and isopropanol to ultrasonically clean for 10 minutes in sequence; this time, dry in a vacuum oven at 80°C. Perform plasma surface treatment on the surface of the cleaned and dried cathode substrate (ITO) for 10 minutes to clean the residual organic matter on the ITO surface and improve its work function.

[0041] Step 2. Spin-coat ZnO solution on the surface of ITO treated in step 1, the rotation speed is 3500rpm, and the time is 40s; anneal the cathode substrate that has been spin-coated with zinc oxide, the temperature is 200°C, the time is 30 minutes, ZnO The thickness of the seed layer is...

Embodiment 2

[0052] The organic solar cell device structure in the present embodiment 2 is: ITO / ZnO:Bi 2 o 2 S / P3HT:PCBM / MoO 3 / Ag.

[0053] The preparation process of the appeal organic solar cell is as follows:

[0054] Step 1. Use detergent, deionized water, titanium tetrachloride aqueous solution, acetone, absolute ethanol, and isopropanol to ultrasonically clean for 10 minutes in sequence; this time, dry in a vacuum oven at 80°C. Perform plasma surface treatment on the surface of the cleaned and dried cathode substrate (ITO) for 10 minutes to clean the residual organic matter on the ITO surface and improve its work function.

[0055] Step 2. Spin-coat ZnO solution on the surface of ITO treated in step 1, the rotation speed is 3500rpm, and the time is 40s; anneal the cathode substrate that has been spin-coated with zinc oxide, the temperature is 200°C, the time is 30 minutes, ZnO The thickness of the seed layer is 5 nm.

[0056] Step 3, growing ZnO nanorods on the ZnO seed layer t...

Embodiment 3

[0062] The doped organic solar cell device structure in the present embodiment 3 is: ITO / ZnO:Bi 2 o 2 S / P3HT:PCBM / MoO 3 / Ag.

[0063] The preparation process of the appeal organic solar cell is as follows:

[0064] Step 1. Ultrasonic cleaning with detergent, deionized water, titanium tetrachloride aqueous solution, acetone, absolute ethanol, and isopropanol for 10 minutes in sequence; this time, dry in a vacuum oven at 80°C. Perform plasma surface treatment on the surface of the cleaned and dried cathode substrate (ITO) for 10 minutes to clean the residual organic matter on the ITO surface and improve its work function.

[0065] Step 2, carry out 10 minutes of plasma surface treatment on the surface of the cathode substrate (ITO) that has been cleaned and dried. This treatment method utilizes the strong oxidizing properties of ozone generated under microwaves to clean the residual organic matter on the ITO surface, etc., and simultaneously can make the ITO surface oxygen T...

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Abstract

The invention belongs to the field of solar cells, and discloses a preparation method of a Bi2O2S coated nanorod array and an application thereof in solar cells. The organic solar cell device comprises a cathode substrate, an electron transport layer, an active layer, a hole transport layer and an anode metal. The electron transport layer is made of Bi2O2S coated ZnO nanorods. The organic solar cell of the present invention has high conductivity and good light absorption Bi2O2S by coating an electron transport layer. Firstly, Bi2O2S powder has high conductivity, which can effectively improve the charge transfer efficiency of organic solar cells. Secondly, Bi2O2S can improve the defects of ZnO surface, reduce the trapping of excitons and the recombination of electron-hole pairs. Finally, Bi2O2S-coated ZnO has a strong visible light absorption range, which can enhance the light absorption of the electron transport layer and ultimately improve the photoelectric conversion efficiency of organic solar cells.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to the coating preparation of zinc oxide nanorods and its application in organic solar cells. Background technique [0002] Nano-zinc oxide has attracted widespread attention because of its non-toxic raw materials, easy preparation, and good performance in physics, chemistry, and biology. Nano-zinc oxide has different shapes, including zinc oxide nanospheres, zinc oxide nanoparticles, zinc oxide nanorods, etc., and zinc oxide nanorods can act as stable and direct "electron transport channels" in solar cells, which is conducive to the collection of excitons . However, zinc oxide is a wide-bandgap semiconductor that can only absorb ultraviolet light and is prone to surface defects during the synthesis process; thus limiting the application of zinc oxide in solar cells. [0003] Studies have shown that there are two directions to improve the photoelectric conversion efficiency of ZnO nanor...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/00H10K30/80H10K30/00H10K2102/00Y02E10/549
Inventor 於黄忠巫祖萍张弜陈金雲黄欣欣黄承稳
Owner SOUTH CHINA UNIV OF TECH
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