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a kind of in 2 the se 3 Organic solar cells doped with pedot:pss as hole transport layer and preparation method thereof

A hole transport layer and solar cell technology, applied in the field of solar cells, can solve the problems of difficulty in hole transport, low hole transport efficiency in the vertical direction, and increased battery series resistance, so as to improve the photoelectric conversion efficiency and improve the charge transport efficiency. , the effect of increasing the short-circuit current density

Active Publication Date: 2020-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of PEDOT:PSS is low, and the efficiency of vertical hole transport is low.
This also causes PEDOT:PSS to be very sensitive to the thickness. If the thickness of PEDOT:PSS is too small, it is easy to form pinholes and generate leakage current; if the thickness is too large, it is difficult for holes to be transported to the electrodes, resulting in an increase in the series resistance of the battery.

Method used

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  • a kind of in <sub>2</sub> the se <sub>3</sub> Organic solar cells doped with pedot:pss as hole transport layer and preparation method thereof
  • a kind of in <sub>2</sub> the se <sub>3</sub> Organic solar cells doped with pedot:pss as hole transport layer and preparation method thereof
  • a kind of in <sub>2</sub> the se <sub>3</sub> Organic solar cells doped with pedot:pss as hole transport layer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] In this embodiment 1, In 2 Se 3 The organic solar cell device structure doped with PEDOT:PSS as the hole transport layer is: ITO / PEDOT:PSS:In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0039] above with In 2 Se 3 The preparation process of the organic solar cell doped with PEDOT:PSS as the hole transport layer is as follows:

[0040] Step 1. Ultrasonic cleaning with detergent, deionized water, acetone, absolute ethanol, and isopropanol for 20 minutes in sequence; then dry in a vacuum oven at 80°C;

[0041] Step 2, carry out 13 minutes of plasma surface treatment on the surface of the anode substrate (ITO) of described cleaning and drying, this treatment method utilizes the strong oxidizing property that generates ozone under microwave to clean residual organic matter etc. on ITO surface, can make ITO surface oxygen simultaneously Increased vacancies improve the work function of the ITO surface;

[0042] Step 3. Spin-coat In on the ITO surface treated in step 2 2 Se 3 Doped wit...

Embodiment 2

[0051] In this embodiment 2, In 2 Se 3 The organic solar cell device structure doped with PEDOT:PSS as the hole transport layer is: ITO / PEDOT:PSS:In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0052] above with In 2 Se 3 The preparation process of the organic solar cell doped with PEDOT:PSS as the hole transport layer is as follows:

[0053] Step 1. Use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean for 15 minutes in sequence; this time, dry in a vacuum oven at 90°C;

[0054] Step 2, carry out 15 minutes of plasma surface treatment on the surface of the anode substrate (ITO) that has been cleaned and dried. This treatment method utilizes the strong oxidative property of generating ozone under the microwave to clean the residual organic matter on the ITO surface, etc., and simultaneously can make the ITO surface oxygen Increased vacancies improve the work function of the ITO surface;

[0055] Step 3. Spin-coat PEDOT:PSS:In on the ITO surfac...

Embodiment 3

[0061] In this embodiment 3, In 2 Se 3 The organic solar cell device structure doped with PEDOT:PSS as the hole transport layer is: ITO / PEDOT:PSS:In 2 Se 3 / P3HT:PCBM / Ca / Al.

[0062] above with In 2 Se 3 The preparation process of the organic solar cell doped with PEDOT:PSS as the hole transport layer is as follows:

[0063] Step 1. Ultrasonic cleaning with detergent, deionized water, acetone, absolute ethanol, and isopropanol for 17.5 minutes in sequence; this time, dry in a vacuum oven at 85°C;

[0064] Step 2, carry out 14 minutes of plasma surface treatment on the surface of the anode substrate (ITO) of described cleaning and drying, this treatment method utilizes the strong oxidizing property that generates ozone under the microwave to clean the residual organic matter etc. on the ITO surface, and simultaneously can make the ITO surface oxygen Increased vacancies improve the work function of the ITO surface;

[0065] Step 3. Spin-coat In on the ITO surface treated ...

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Abstract

The invention discloses an In 2 Se 3 Doped with PEDOT:PSS organic solar cell and preparation method thereof; the organic solar cell includes an anode substrate, a hole transport layer, an active layer, an electron transport layer and a cathode layer stacked in sequence; the hole The transport layer is In 2 Se 3 Doped with PEDOT:PSS. The organic solar cell of the present invention has used In 2 Se 3 ; First, In 2 Se 3 With high conductivity, it can effectively improve the charge transport efficiency of PEDOT:PSS and reduce the sensitivity to film thickness; secondly, In 2 Se 3 Light transmittance is higher, can allow active layer to utilize incident light effectively; Finally, in the present invention, In 2 Se 3 The powder is mixed with deionized water and isopropanol to form a solution, which is not only environmentally friendly, but also enables it to be doped in PEDOT:PSS.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a 2 Se 3 An organic solar cell doped with PEDOT:PSS as a hole transport layer and a preparation method thereof. Background technique [0002] Organic solar cells have attracted extensive attention due to their wide source of raw materials, easy processing, easy physical and chemical modification, various structures of battery devices, low price, and environmental friendliness. However, compared with traditional inorganic silicon solar cells, organic solar cells have lower photoelectric conversion efficiency, which limits their further development. [0003] The working principle of organic solar cells is: (1) Light passes through the ITO electrode and shines on the active layer, and the active layer absorbs photons to generate excitons; the excitons diffuse to the donor / acceptor interface; (2) the excitons in the acceptor The holes are transferred to the donor, and the excitons in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549Y02P70/50
Inventor 於黄忠王键鸣张弜侯春利巫祖萍黄承德陈金云
Owner SOUTH CHINA UNIV OF TECH
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