Solar cell and preparation method thereof

A technology of solar cells and conductive layers, applied in the field of solar cells, can solve the problems of low short-circuit current, low photoelectric conversion efficiency, low carrier mobility, etc. Photoelectric conversion efficiency, the effect of improving transmission efficiency

Active Publication Date: 2012-02-01
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, to achieve commercialization, the photoelectric conversion efficiency of organic solar cells is still low, and the stability of the device needs to be further improved.
The main reasons for the low photoelectric conversion efficiency of organic solar cells are: the absorption spectrum of the conjugated polymer does not match the solar spectrum, and the utilization rate of sunlight is low; in addition, in bulk heterojunction organic solar cells, Due to the increase of heterojunction interfaces, the excitons genera

Method used

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  • Solar cell and preparation method thereof
  • Solar cell and preparation method thereof
  • Solar cell and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0039] The manufacturing method of the solar cell with the above structure includes the following steps:

[0040] (1) Clean the substrate to make the surface of the substrate clean and increase its surface adhesion;

[0041] (2) Depositing a conductive electrode with a certain thickness on the back of the above-mentioned substrate can be, but not limited to, using vacuum evaporation, magnetron sputtering, chemical vapor deposition, etc., to deposit a certain thickness on the back of the above-mentioned substrate Metals such as aluminum, magnesium, gold, silver and their alloys are then annealed in a protective atmosphere to form ohmic contact electrodes;

[0042] (3) In the vacuum chamber, it is possible but not limited to use methods such as chemical vapor deposition, inductively coupled plasma etching, electron beam exposure, electron beam evaporation, and low-temperature vacuum sputtering to prepare semiconductor nanopillar arrays on the above-mentioned substrate;

[0043] (4) Vacu...

Example Embodiment

[0048] Example 1:

[0049] (1) Put the ZnO substrate in H with a mass percentage concentration of 0.5% 2 O 2 Soak in the mixed solution of ammonia water for 5 minutes, then ultrasonic treatment for 10 minutes, clean it with deionized water and dry it for later use;

[0050] (2) Using a chemical vapor deposition method, deposit metal copper with a thickness of 10 μm on the back of the above substrate, and then perform annealing treatment at 450° C. for 40 minutes in a protective atmosphere to form a metal copper electrode with ohmic contact;

[0051] (3) In the vacuum chamber, the In-Zn-O nanopillar array is prepared on the ZnO substrate material by electron beam evaporation, the average diameter of the nanopillars is 100nm, the height is 1000nm, and the spacing between the pillars is 100nm;

[0052] (4) Prepare a chlorobenzene solution with a mass ratio of P3HT and PCBM of 4:1, uniformly mixed, and a total concentration of 15mg / ml, fill the mixed solution into the void formed by the se...

Example Embodiment

[0056] Example 2:

[0057] (1) Put the AlN substrate on the H 2 O 2 Soak in the mixed solution of ammonia water for 5 minutes, then ultrasonic treatment for 10 minutes, clean it with deionized water and dry it for later use;

[0058] (2) Using a vacuum evaporation method, deposit a 5 μm thick metal aluminum on the back of the substrate, and then perform an annealing treatment at 350° C. for 20 minutes in a protective atmosphere to form an ohmic contact metal aluminum electrode;

[0059] (3) In the vacuum chamber, the AlN material nanopillar array is prepared on the AlN substrate by the self-chemical vapor deposition method, the average diameter of the nanopillars is 30nm, the height is 100nm, and the spacing between the pillars is 30nm;

[0060] (4) Using the vacuum co-evaporation method, the 4G1-3S and PCBM are filled into the gap formed by the semiconductor nanopillar array at a mass ratio of 1:1, and then plasma treatment is performed to make the organic material and the semiconduct...

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Abstract

The invention belongs to the field of solar cells, which discloses a solar cell. The solar cell has the following structure: a conducting layer performing the action of electrodes, a substrate, a nanometer column array formed by a semiconductor compound material, an optical activity material filling material, and a transparent conducting electrode layer and a protective electrode. The invention also discloses a preparation method of the solar cell. The solar cell provided by the invention is characterized in that the short circuit current of the solar cell is increased because of the semiconductor nanometer column array so as to improve the photoelectric conversion efficiency. Meanwhile, because the nanometer column array is filled with an organic active material, the periodic structure forms a photonic crystal structure, sunlight which is too late to be absorbed by the photoactive organic material can be irradiated again on the organic material by the reflecting action of the photonic crystal structure, and adsorption on the sunlight by the organic material is enhanced so as to improve the photoelectric conversion efficiency thereof.

Description

technical field [0001] The invention relates to a solar cell, in particular to a solar cell with a photoactive layer containing an organic / inorganic hybrid structure. The invention also relates to a method for preparing the solar cell. Background technique [0002] With the rapid development of the global economy, the consumption of energy has increased sharply. The huge use of fossil fuels has not only caused the depletion of non-renewable resources such as coal, oil, and natural gas, threatening the energy security of human society, but also a large amount of carbon dioxide emissions. It has caused increasingly serious social and environmental problems. In this situation, there is an urgent need to develop and utilize clean energy with both economic performance and high performance. Among them, solar energy is regarded as one of the available, most promising, and renewable energy sources, which has attracted people's attention. [0003] Solar energy utilization schemes ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCY02E10/549
Inventor 周明杰时朝璞马文波
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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