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Organic solar cell

A solar cell, organic technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of low crystallinity of the photoactive layer film, unable to form effective current, poor stability, etc., to improve photoelectric conversion efficiency and enhance utilization efficiency. , the effect of improving the crystallinity

Active Publication Date: 2014-01-22
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the low photoelectric conversion efficiency and poor stability of organic solar cells are still the main reasons restricting the practical application of organic solar cells.
This is mainly because: (1) The absorption wavelength of the electron donor material is mostly in the visible light region, and the spectral absorption range is narrow, so it cannot make full use of sunlight, especially in the near ultraviolet and near infrared regions of sunlight; (2) Part of the sunlight absorbed by the donor material will be radiated and lost in the form of near-infrared wavelength fluorescence to form an effective current; (3) The photoactive layer film composed of the donor material and the acceptor material has low crystallinity and poor stability

Method used

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  • Organic solar cell
  • Organic solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Treatment of transparent G / ITO:

[0035] After etching the electrode pattern on ITO conductive glass (Zhuhai Kaiwei Electronic Components Co., Ltd., square resistance 14Ω / □, transmittance 85%), wash it with detergent, and then use deionized water, absolute ethanol, acetone and isopropyl Alcohol ultrasonic cleaning for 10 minutes, nitrogen drying, and UV / ozone treatment for 20 minutes.

[0036] Preparation of electron transport layer:

[0037] A layer of ZnO with a thickness of 20nm was prepared on the surface of ITO by magnetron sputtering.

[0038] Preparation of photoactive layer:

[0039] Weigh 15mg P3HT and 15mg PC respectively 60 BM was dissolved in 1mL of chlorobenzene, and then 0.2mg ZnTPP and 0.02mg CuPc were added, ultrasonic treatment for 0.5h, magnetic stirring at 70℃ for 4h, and then the mixed solution was spin-coated on the surface of the electron transport layer by a homogenizer. The homogenizer rotates at 1000 rpm, spin-coating for 40 seconds, and annealing at 13...

Embodiment 2

[0046] Preparation of photoactive layer:

[0047] Weigh 15mg P3HT and 15mg PC respectively 60 BM was dissolved in 1 mL of chlorobenzene, and then a solution of 0.01 mg ZnTPP and 0.02 mg SiPc was added, ultrasonicated for 0.5 h, magnetically stirred at 70 °C for 4 h, and then the mixed solution was spin-coated on a homogenizer. The homogenizer rotates at 1000 rpm, spin-coats for 40 seconds, and anneals at 130° C. for 10 minutes to prepare a photoactive layer film with a thickness of 200 nm.

[0048] Other preparation methods are the same as in Example 1.

[0049] The device structure of the organic solar cell prepared by the above method: G / ITO / ZnO / P3HT:PC 60 BM: ZnTPP: SiPc / MoO 3 / Al, effective area is 0.04cm 2 , The photoelectric conversion efficiency data is shown in Table 1, and the test conditions are the same as in Example 1.

Embodiment 3

[0051] Preparation of photoactive layer:

[0052] Weigh 15mg P3HT and 15mg PC respectively 60 BM was dissolved in 1 mL of chlorobenzene, then a solution of 1.0 mg N3 and 0.1 mg SiNc was added, sonicated for 0.5 h, magnetically stirred at 70 °C for 4 h, and then the mixed solution was spin-coated on a homogenizer. The homogenizer rotates at 1000 rpm, spin-coats for 40 seconds, and anneals at 130° C. for 10 minutes to prepare a photoactive layer film with a thickness of 200 nm.

[0053] Other preparation methods are the same as in Example 1.

[0054] The device structure of the organic solar cell prepared by the above method: G / ITO / ZnO / P3HT:PC 60 BM: N3: SiNc / MoO 3 / Al, effective area is 0.04cm 2 , The photoelectric conversion efficiency data is shown in Table 1, and the test conditions are the same as in Example 1.

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Abstract

An organic solar cell comprises a transparent substrate, a cathode, an electron transport layer, an optical activity layer, a hole transport layer and an anode, wherein the optical activity layer comprises a donor material, an acceptor material and two or more dyes with different absorption wavelengths. According to the organic solar cell, the absorption of the organic solar cell for near ultraviolet and near infrared regions in sunlight is increased through the addition of dye combination, the absorption spectrum of the organic solar cell for the sunlight is broadened, the fluorescent radiation loss is reduced, the utilization efficiency of the sunlight is reinforced, and the photoelectric conversion efficiency of the organic solar cell is further improved. Meanwhile, the crystallinity of the optical activity layer is also improved due to the addition of the dyes, and the stability of the organic solar cell is improved.

Description

Technical field [0001] The invention relates to the field of organic semiconductor optoelectronic devices, in particular to an organic solar cell. Background technique [0002] The photoactive layer semiconductor materials of organic solar cells have the characteristics of simple preparation, easy modification, low price, and ability to produce large-area flexible devices, and have great potential application value. High efficiency and high stability are two important indicators for measuring organic solar cells. Therefore, how to improve the photoelectric conversion efficiency and stability of organic solar cells is the current research focus of organic solar cells. Organic solar cells mainly use photoactive layers composed of organic conjugated small molecules or organic conjugated polymers and fullerene derivatives to complete photoelectric conversion. In the past ten years, scientists have optimized the structure of organic solar cells by designing and synthesizing electron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/211H10K85/311H10K85/344H10K85/342Y02E10/549
Inventor 刘贤豪于正森李秀贞侯丽新彭朝利
Owner CHINA LUCKY FILM CORP
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