A polymer solar battery and its making method

A solar cell and polymer technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as unfavorable large-scale industrial production, difficult to accurately control, high process requirements, etc., to increase photoelectric conversion efficiency and improve fill factor. , the effect of simple process

Inactive Publication Date: 2008-02-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the performance of the device is highly dependent on the thickness of lithium fluoride, the thickness must be controlled between 5 and 15 angstroms in order to obtain ideal performance. Facilitate large-scale industrial production

Method used

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  • A polymer solar battery and its making method
  • A polymer solar battery and its making method
  • A polymer solar battery and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 (comparative example), the preparation of the solar cell without cathode modification layer

[0024] The transparent conductive glass sputtered with ITO (anode) was cleaned sequentially with cleaning, deionized water, acetone, and isopropanol, and then the surface of the substrate was treated with ozone, and then spin-coated with 30 nm thick PEDOT:PSS as the anode Modify the film and dry it at 150°C for 10 minutes. A mixed solution of 3 mg per ml of MEH-PPV and PCBM 1:4 (mass ratio) was directly spin-coated on the above-mentioned anode-modified substrate at a speed of 1600 revolutions per minute (rpm) as a photoelectric active layer, and then Dry at 50°C for 30 minutes, and cool to room temperature naturally; finally, at 5×10 -5 150nm aluminum was vacuum-evaporated under Pa to serve as the cathode.

[0025] Figure 2 shows the current-voltage curves of the device without light irradiation and under simulated sunlight irradiation of 100 mW / cm2. The prepare...

Embodiment 2

[0026] Embodiment 2, the preparation of solar cell of the present invention

[0027] Accurately measure 50 microliters of 70% diisopropoxybis(acetylacetonate)titanium in isopropanol solution (purchased from Alfa Aesar, USA), and add it to 1000 microliters of anhydrous and oxygen-free isopropyl alcohol solution. Alcohol, stir well, let it stand, and filter with a 5 micron filter head, set aside.

[0028] The transparent conductive glass sputtered with ITO (anode) was ultrasonically cleaned with detergent, deionized water, acetone, and isopropanol in sequence, and then the surface of the substrate was treated with ozone, and then spin-coated with 30 nm thick PEDOT:PSS as Anodically modified film, dried at 150°C for 10 minutes. A mixed solution of 3 mg per ml of MEH-PPV and PCBM 1:4 (mass ratio) was directly spin-coated on the above-mentioned anode-modified substrate at a speed of 1600 revolutions per minute (rpm) as a photoelectric active layer, and then Dry at 50°C for 30 min...

Embodiment 3

[0031] The transparent conductive glass sputtered with ITO (anode) was ultrasonically cleaned with detergent, deionized water, acetone, and isopropanol in sequence, and then the surface of the substrate was treated with ozone, and then spin-coated with 30 nm thick PEDOT:PSS as Anodically modified film, dried at 150°C for 10 minutes. A mixed solution of 3 mg per ml of MEH-PPV and PCBM 1:4 (mass ratio) was directly spin-coated on the above-mentioned anode-modified substrate at a speed of 1600 revolutions per minute (rpm) as a photoelectric active layer, and then Dry at 50°C for 30 minutes, and cool to room temperature naturally. The isopropanol solution of the obtained diisopropoxybis(acetylacetonate)titanium is directly spin-coated on the top of the photoelectric active layer at a speed of 4000rpm, and dried in vacuum at 80° C. for 30 minutes, and cooled naturally; finally , at 5 x 10 -5 150nm aluminum was vacuum-evaporated under Pa to serve as the cathode.

[0032] Diisopro...

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Abstract

The invention discloses a polymer solar cell and a preparation method. The polymer solar cell comprises a substrate, an anode layer, a modification layer of anode, a photovoltaic active layer, a modification layer of cathode and a cathode layer which are connected mutually and successively in two pieces, wherein, the modification layer of cathode is titanium dialkoxy acetylacetonate film. The invention uses titanium diisopropoxide acetylacetonate as the material of the modification layer of cathode and introduces the material into the polymer solar cell, so increases the photovoltaic conversion efficiency of the solar cell. Meanwhile, the invention has the advantages of simple process, low cost and good experiment repeatability by comparing to the existing cell of the modification layer of cathode with lithium fluoride. Moreover, a very simple spin-coating method coats titanium diisopropoxide acetylacetonate on the photovoltaic active layer, so the invention also has the advantages of simple preparation process, easy control of thickness, no damage on the lower photovoltaic active layer, and being suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a polymer solar cell and a preparation method thereof. Background technique [0002] With the gradual aggravation of energy crisis and environmental pollution in recent years, the demand for renewable energy is also increasing. As a clean and renewable energy source, the research and application of solar cells have achieved tremendous development in the past few decades. Organic / polymer solar cells have received widespread attention due to their advantages such as simple preparation process, light weight, low cost, and easy preparation of large-area flexible devices (1: Tang, C.W.Appl.Phys.Lett., 1986, 48, 183.2: Brabec, C.J.; Sariciftci, N.S.; Hummelen, J.C. Adv. Funct. Mater. 2001, 11, 15). [0003] In the past few years, more and more research efforts have focused on improving the charge collection efficiency of organic / polymer solar cells at the anode and cathode electrodes (1: Hasobe, T.; Imahori, H.; Kamat, P.V.; Fukuz...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/50Y02E10/549Y02P70/50
Inventor 谭占鳌杨春和李永舫
Owner INST OF CHEM CHINESE ACAD OF SCI
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