Organic solar cell with In2Se3 as hole transport layer and preparation method of organic solar cell

A hole transport layer and solar cell technology, applied in the field of solar cells, can solve the problems of device stability, limited charge transmission and collection, and limited photoelectric conversion efficiency of cells, so as to reduce sensitivity and improve charge transfer efficiency. Effect

Active Publication Date: 2019-06-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The strong acidity and hydrophilicity of PEDOT:PSS will have a greater impact on the stability of the device.
In addition, the light transmittance of PEDOT:PSS is low, and the insulation of PSS and the strong anisotropy of PEDOT will limit the transport and collection of charges, thus limiting the improvement of the photoelectric conversion efficiency of the battery.

Method used

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  • Organic solar cell with In2Se3 as hole transport layer and preparation method of organic solar cell
  • Organic solar cell with In2Se3 as hole transport layer and preparation method of organic solar cell
  • Organic solar cell with In2Se3 as hole transport layer and preparation method of organic solar cell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In this embodiment, In 2 Se 3 The structure of the organic solar cell device as the hole transport layer: ITO / In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0038] In the above 2 Se 3 The preparation process of the organic solar cell as the hole transport layer is as follows:

[0039] Step 1. Use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean each for 20 minutes; then dry in a vacuum drying oven at 80°C;

[0040] Step 2. Plasma surface treatment is performed on the surface of the cleaned and dried anode substrate (ITO) for 13 minutes. This treatment method uses the strong oxidizing properties of ozone generated under microwave to clean the residual organic matter on the ITO surface, and at the same time, it can make the ITO surface oxygen. Increase the vacancy and increase the work function of the ITO surface;

[0041] Step 3. Spin-coating In on the ITO surface treated in Step 2 2 Se 3 Solution; the In 2 Se 3 The solution preparation process is: I...

Embodiment 2

[0050] In this embodiment 2 with In 2 Se 3 The structure of the organic solar cell device as the hole transport layer: ITO / In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0051] In the above 2 Se 3 The preparation process of the organic solar cell as the hole transport layer is as follows:

[0052] Step 1. Use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean each for 15 minutes; this time, dry in a vacuum drying oven at 80°C;

[0053] Step 2. Plasma surface treatment is performed on the surface of the cleaned and dried anode substrate (ITO) for 15 minutes. This treatment method uses the strong oxidizing properties of ozone generated under microwave to clean the residual organic matter on the ITO surface, and at the same time, it can make the ITO surface oxygen. Increase the vacancy and increase the work function of the ITO surface;

[0054] Step 3. Spin-coating In on the ITO surface treated in Step 2 2 Se 3 Solution; the In 2 Se 3 The solution preparation p...

Embodiment 3

[0060] In this embodiment 3, In 2 Se 3 The structure of the organic solar cell device as the hole transport layer: ITO / In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0061] In the above 2 Se 3 The preparation process of the organic solar cell as the hole transport layer is as follows:

[0062] Step 1. Use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean each for 17.5 minutes; this time, dry in a vacuum drying oven at 85°C;

[0063] Step 2. Plasma surface treatment is performed on the surface of the cleaned and dried anode substrate (ITO) for 14 minutes. This treatment method uses the strong oxidizing property of ozone generated under microwave to clean the residual organic matter on the ITO surface, and at the same time, it can make the ITO surface oxygen. Increase the vacancy and increase the work function of the ITO surface;

[0064] Step 3. Spin-coating In on the ITO surface treated in Step 2 2 Se 3 Solution; the In 2 Se 3 The solution preparation proce...

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Abstract

The invention discloses an organic solar cell taking In2Se3 as a hole transport layer and a preparation method of the organic solar cell. The organic solar cell comprises an anode substrate, a hole transport layer, an active layer, an electron transport layer and a cathode layer, which are sequentially stacked; and the hole transport layer is In2Se3. According to the prepared organic solar cell, In2Se3 with high conductivity and high light transmittance is used. Firstly, In2Se3 has high conductivity, so the charge transmission efficiency of the organic solar cell can be effectively improved, and the sensitivity to the thickness of a thin film is reduced; secondly, the light transmittance of In2Se3 is relatively high, so that the active layer can effectively utilize incident light; and finally, the In2Se3 powder is mixed with isopropyl alcohol by using deionized water to prepare a solution, and the solution is spin-coated to form a film, so that the preparation method is more environment-friendly.

Description

Technical field [0001] The invention relates to the field of solar cells, in particular to a 2 Se 3 An organic solar cell which is a hole transport layer and a preparation method thereof. Background technique [0002] Organic solar cells have received extensive attention due to their wide range of raw materials, easy processes, easy physical and chemical modification, diverse battery device structures, low cost, and environmental friendliness. At present, the reported energy conversion efficiency of organic solar cells is close to 15%, which has become a research hotspot of new generation solar cells. [0003] The working principle of the organic solar cell is: (1) Light passes through the ITO electrode and hits the active layer, the active layer absorbs photons to generate excitons; the excitons diffuse to the donor / acceptor interface; (2) the excitons in the acceptor Transfer the holes to the donor, the excitons in the donor transfer the electrons to the acceptor, and then reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 於黄忠王键鸣
Owner SOUTH CHINA UNIV OF TECH
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