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Organic solar cell employing ternary component as active layer

A solar cell and organic active layer technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of poor thermal stability and mechanical properties, expensive fullerene acceptors, poor optical properties, etc., to increase short circuit Current, improve photoelectric conversion efficiency, enhance the effect of light absorption

Active Publication Date: 2016-10-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the disadvantages of high price, poor optical properties, poor thermal stability and mechanical properties of fullerene acceptors in current organic solar cells, and provides a three-stage electron acceptor on the basis of using polymer materials as the main electron acceptor The method of meta-blending to enhance absorption, blending three organic semiconductor materials to make battery devices, effectively improving the performance of organic solar cells

Method used

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  • Organic solar cell employing ternary component as active layer
  • Organic solar cell employing ternary component as active layer
  • Organic solar cell employing ternary component as active layer

Examples

Experimental program
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Embodiment 1

[0025] The technical solution of the present invention provides a ternary system polymer-non-fullerene organic solar cell that does not require fullerene and its derivatives. The structure is shown in Figure 1. The organic solar cell adopts an upright structure, from bottom to bottom The above sequence is: transparent glass substrate, transparent conductive cathode ITO, material is PEDOT: PSS cathode buffer layer, organic active layer, material is lithium fluoride or calcium anode buffer layer, aluminum metal anode. The thickness of the anode buffer layer is 0.6-10 nm, and the thickness of the cathode buffer layer is 30-50 nm.

[0026] Clean the substrate composed of glass transparent substrate and transparent conductive cathode ITO with acetone, soapy water, isopropanol and acetone respectively; after drying, spin-coat a layer of 40-45nm PEDOT on the surface of transparent conductive cathode ITO:PSS, And the formed film was annealed (140°C, 15min).

[0027] Adopt spin coatin...

Embodiment 2

[0047] Clean the substrate composed of glass transparent substrate and transparent conductive cathode ITO with acetone, soapy water, isopropanol and acetone respectively; after drying, spin-coat a layer of 40-45nm PEDOT on the surface of transparent conductive cathode ITO:PSS, And the formed thin film is annealed (140 ℃, 15min); On the cathode buffer layer, the organic active layer is prepared by spin coating to prepare samples respectively:

[0048] PT8:PA-1:ITIC(60%:40%:0%);

[0049] PTP8:PA-1:ITIC (60%:34%:6%).

[0050] The structural formula of PT8 is:

[0051] .

[0052] All organic materials are dissolved in chloroform, and the thickness of the film obtained by spin coating is about 80-100nm (1000rpm, 40s). The organic active layer does not need heat treatment; the modification layer LiF (0.6nm) and metal are deposited on the organic layer by thermal evaporation. Electrode Al (100nm).

[0053] Control group PT8:PA-1:ITIC(60%:40%:0%), under standard test conditions:...

Embodiment 3

[0057] Clean the substrate composed of glass transparent substrate and transparent conductive cathode ITO with acetone, soapy water, isopropanol and acetone respectively; after drying, spin-coat a layer of 40-45nm PEDOT on the surface of transparent conductive cathode ITO:PSS, And the formed thin film is annealed (140 ℃, 15min); On the cathode buffer layer, the organic active layer is prepared by spin coating and prepares samples respectively:

[0058] PTQ1:N2200:ITIC(60%:40%:0%);

[0059] PTQ1:N2200:ITIC(60%:34%:6%) .

[0060] The structural formula of PTQ1 is:

[0061] ;

[0062] The structural formula of N2200 is:

[0063] .

[0064] All organic materials are dissolved in chloroform, and the thickness of the film obtained by spin coating is about 80-100nm (1000rpm, 40s). The organic active layer does not need heat treatment; the modification layer LiF (0.6nm) and metal are deposited on the organic layer by thermal evaporation. Electrode Al (100nm).

[0065] Contro...

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Abstract

The invention discloses an organic solar cell employing a ternary component as an active layer, and belongs to the field of organic polymer photovoltaic devices or organic semiconductor thin-film solar cells. The ternary component is adopted by the organic active layer in the device structure of the battery disclosed by the invention; sunlight in visible and infrared regions is utilized to the maximal extent by introducing a second conjugated molecular electron acceptor material and regulating and controlling the relative content of a second acceptor; the generation number of photogenerated excitons is increased; the short-circuit current density of the device is improved; and the efficiency of the polymeric donor and non-fullerene receptor system-based solar cell is finally improved.

Description

technical field [0001] The invention belongs to the technical field of organic polymer photovoltaic devices or organic semiconductor thin-film solar cells, and in particular relates to an organic solar cell with a ternary component as an active layer. Background technique [0002] With the development of society and the improvement of people's living standards, the society's demand for energy is also increasing. Fossil energy is still dominant. In our country, the potential energy of water and nuclear energy have also been greatly utilized. Others, such as wind power, tidal energy, geothermal energy, solar energy, etc., are not yet mainstream. Carbon emissions from fossil fuels contribute to global warming. Hydropower, on the other hand, threatens to disrupt the ecological balance and cause climate extremes, and is increasingly controversial. The serious hazards caused by accidents at nuclear power have also prevented widespread commercialization of this energy source. ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/00H10K30/451Y02E10/549
Inventor 马万里丁冠群袁建宇张燕南贾忠娟
Owner SUZHOU UNIV
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