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An organic solar cell based on a spray-coated molybdenum trioxide anode buffer array and its preparation method

A technology of solar cells and molybdenum trioxide, applied in circuits, electrical components, electrical solid devices, etc., can solve problems such as carrier transmission and separation obstruction, anode buffer layer interface roughness, high carrier recombination probability, etc., to achieve Reduce the chance of recombination, reduce the coffee ring effect, optimize the effect of spraying process

Active Publication Date: 2019-08-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above technical problems, the present invention provides an organic solar cell based on a spray-coated molybdenum trioxide anode buffer array, thereby solving the problem that the interface of the anode buffer layer in the conventional organic solar cells is relatively rough, and the contact with the active layer is not good, which leads to current-carrying The transmission and separation of carriers are hindered, so that the battery has a large interface contact resistance and a high probability of carrier recombination, and the technical problem of low yield due to uneven spraying and atomization during battery preparation

Method used

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  • An organic solar cell based on a spray-coated molybdenum trioxide anode buffer array and its preparation method
  • An organic solar cell based on a spray-coated molybdenum trioxide anode buffer array and its preparation method
  • An organic solar cell based on a spray-coated molybdenum trioxide anode buffer array and its preparation method

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Embodiment

[0028] Such as figure 1 As shown, an organic solar cell based on a spray-coated molybdenum trioxide anode buffer array, the solar cell adopts an inverted structure, including a substrate layer 1, ITO (ITO, English name Indium Tin Oxides, oxidized Indium tin) transparent conductive cathode layer 2, cathode buffer layer 3, photoactive layer 4, anode buffer layer 5, metal anode layer 6;

[0029] in,

[0030] The anode buffer layer 5 is a molybdenum trioxide array film formed by spraying an aqueous ammonium molybdate solution mixed with hyaluronic acid on the photoactive layer 4 and annealing; in the molybdenum trioxide array film, the mass fraction of hyaluronic acid and ammonium molybdate They are:

[0031] Ammonium molybdate 0.2-1wt%;

[0032] Hyaluronic acid 0-0.5wt%.

[0033] Preferably, the photoactive layer 4 is mainly composed of electron donor material P3HT and electron acceptor material PC 61 A solid film prepared from a mixed solution of BM;

[0034] in,

[0035]...

specific Embodiment

[0054] Control group 1

[0055] 1. Clean the substrate composed of a transparent substrate layer 1 and an ITO transparent conductive cathode layer 2 with a surface roughness less than 1 nm, and dry it with nitrogen after cleaning;

[0056] 2. Spin-coat ZnO nanoparticles on the surface of the ITO transparent conductive cathode layer 2 (working parameters: rotating speed 5000rpm, time 40s, thickness 50nm, the same below, no further description) to prepare the cathode buffer layer 3, and conduct the formed film at low temperature Baking (working parameters: temperature 30°C, time 20min);

[0057] 3. Prepare P3HT: PC by spraying on the cathode buffer layer 3 61 BM (mass ratio 1:0.9, concentration 5mg / ml, the same below, no further description) photoactive layer 4 (airflow 15L min-1, solvent 0.075ml min -1 300nm, the same below, no further explanation);

[0058] 4. Spray ammonium molybdate aqueous solution (airflow 10L min on the surface of photoactive layer 4 -1 , solvent 0.0...

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Abstract

The invention relates to an organic solar cell based on a spray-coated molybdenum trioxide anode buffer array. The solar cell adopts an inverted structure, including a substrate layer, an ITO transparent conductive cathode layer, a cathode buffer layer, and a photoactive layer arranged in sequence from bottom to top. , anode buffer layer, metal anode layer; the anode buffer layer is a molybdenum trioxide array film formed by spraying an ammonium molybdate aqueous solution mixed with hyaluronic acid on the photoactive layer and annealing; in the molybdenum trioxide array film, hyaluronic acid The mass fractions of ammonium molybdate and ammonium molybdate are: 0.2-1wt% ammonium molybdate; 0-0.5wt% hyaluronic acid. The invention also discloses the preparation method of the battery; the invention forms a hyaluronic acid layer on the photoactive layer by adding hyaluronic acid into the ammonium molybdate aqueous solution, the precursor of molybdenum trioxide, and the introduced hanging chemical bonds can make The molybdenum trioxide layer forms a good ohmic contact with the active layer, which improves the performance of the battery.

Description

technical field [0001] The invention relates to a solar cell, which belongs to the field of new energy solar cells; in particular, it relates to an organic solar cell based on a molybdenum trioxide anode buffer array; meanwhile, the invention also discloses a preparation method of the organic solar cell. Background technique [0002] With the rapid development of the world economy, increasing energy consumption and serious environmental pollution, traditional fossil energy has been exhausted with people's continuous development. Moreover, the use of fossil energy can cause serious environmental pollution. As a kind of renewable green energy, solar energy reaches the ground as high as 800,000 kilowatts per second. If 0.1% of the solar energy on the earth's surface is converted into electrical energy, the conversion rate is 5%, and the annual power generation can reach 5.6×1012 kilowatts / hour. . To convert the sun into electricity requires solar cells. According to the diff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44
CPCH10K30/10H10K30/00H10K30/81H10K30/82Y02E10/549
Inventor 于军胜季然郑丁范谱
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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