Organic solar cell taking PBDB-T: ITIC: alpha-In2Se3 as active layer and preparation method of organic solar cell

A PBDB-T, solar cell technology, applied in the field of solar cells, can solve problems such as complex processes, and achieve the effects of enhancing light absorption, improving photoelectric conversion efficiency, and improving photoelectric conversion efficiency

Active Publication Date: 2020-09-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But black phosphorus also needs surface modification (CN 106654017A) before doping, which will make the process complicated

Method used

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  • Organic solar cell taking PBDB-T: ITIC: alpha-In2Se3 as active layer and preparation method of organic solar cell
  • Organic solar cell taking PBDB-T: ITIC: alpha-In2Se3 as active layer and preparation method of organic solar cell
  • Organic solar cell taking PBDB-T: ITIC: alpha-In2Se3 as active layer and preparation method of organic solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Using PBDB-T:ITIC:α-In in this embodiment 1 2 Se 3 The organic solar cell device structure as the active layer is: ITO / ZnO / PBDB-T:ITIC:α-In 2 Se 3 / MoO 3 / Ag.

[0056] The above-mentioned PBDB-T:ITIC:α-In 2 Se 3 The preparation process of the organic solar cell that is the active layer is as follows:

[0057] Step 1. Use detergent, deionized water, acetone, absolute ethanol, and isopropanol to ultrasonically clean the cathode substrate for 20 minutes; then dry it in a vacuum oven at 80°C;

[0058] Step 2, carry out 14 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 Increased vacancies improve the work function of the ITO surface;

[0059] Step 3. Spin-coat the ZnO solution on the surface...

Embodiment 2

[0068] Using PBDB-T:ITIC:α-In in this embodiment 2 2 Se 3 The organic solar cell device structure as the active layer is: ITO / ZnO / PBDB-T:ITIC:α-In 2 Se 3 / MoO 3 / Ag.

[0069] The above-mentioned PBDB-T:ITIC:α-In 2 Se 3 The preparation process of the organic solar cell that is the active layer is as follows:

[0070] Step 1. Ultrasonic cleaning with detergent, deionized water, acetone, absolute ethanol, and isopropanol for 15 minutes in sequence; then dry in a vacuum oven at 80°C;

[0071]Step 2, carry out 12 minutes of plasma surface treatment on the cathode base (ITO) surface 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;

[0072] Step 3. Spin-coat the ZnO solution on the surface of the ITO treated in step 2 at a speed of 40...

Embodiment 3

[0078] Using PBDB-T:ITIC:α-In in this embodiment 3 2 Se 3 The organic solar cell device structure as the active layer is: ITO / ZnO / PBDB-T:ITIC:α-In 2 Se 3 / MoO 3 / Ag.

[0079] The above-mentioned PBDB-T:ITIC:α-In 2 Se 3 The preparation process of the organic solar cell that is the active layer is as follows:

[0080] Step 1. Ultrasonic cleaning with detergent, deionized water, acetone, absolute ethanol, and isopropanol for 18 minutes in sequence; then dry in a vacuum oven at 80°C;

[0081] Step 2, carry out 13 minutes of plasma surface treatment on the cathode base (ITO) surface 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;

[0082] Step 3. Spin-coat ZnO solution on the ITO surface treated in step 2 at a speed of 4200 rpm, an...

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Abstract

The invention discloses an organic solar cell taking PBDB-T: ITIC: alpha-In2Se3 as an active layer and a preparation method of the organic solar cell. The solar cell comprises a cathode substrate, anelectron transport layer, an active layer, a hole transport layer and an anode layer, wherein the active layer material is formed by mixing PBDB-T: ITIC and a solution containing a two-dimensional alpha-In2Se3 nanosheet. According to the cell, alpha-In2Se3 with high conductivity and high light absorption coefficient is used; alpha-In2Se3 has higher conductivity, so the charge transmission efficiency of the active layer can be effectively improved; the light absorption coefficient of alpha-In2Se3 is higher, so incident light can be effectively utilized by the active layer; and finally, the block alpha-In2Se3 is stripped into nanosheets by using a liquid phase stripping method, and the nanosheets are dispersed in the chlorobenzene solvent again after stripping to form an alpha-In2Se3 chlorobenzene solution, so doping becomes simple, and the influence of other solvents is avoided.

Description

technical field [0001] The present invention relates to the field of solar cells, in particular to a PBDB-T:ITIC:α-In 2 Se 3 An organic solar cell with an active 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, excellent mechanical flexibility, light weight, easy physical and chemical modification, low cost, 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 exciton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48B82Y30/00
CPCB82Y30/00H10K71/12H10K85/113H10K30/00H10K2102/00Y02E10/549
Inventor 於黄忠王键鸣侯春利陈金雲黄承稳
Owner SOUTH CHINA UNIV OF TECH
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