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Solar cell electrode, preparation method therefor, and solar cell

A solar cell and electrode technology, applied in electrolytic capacitors, circuits, capacitors, etc., can solve the problems that limit the development and application of high-performance solar cells, reduce the amount of dye adsorption, and make it difficult to scatter and absorb visible light with a large specific surface area.

Inactive Publication Date: 2016-06-22
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specific surface area of ​​large particles is also very low, which reduces the amount of dye adsorption and reduces the overall efficiency of the battery.
In general, long electron diffusion free paths, strong visible light scattering and absorption, and large specific surface area are difficult to achieve on the same electrode, which greatly limits the development and application of current high-performance solar cells.

Method used

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  • Solar cell electrode, preparation method therefor, and solar cell
  • Solar cell electrode, preparation method therefor, and solar cell
  • Solar cell electrode, preparation method therefor, and solar cell

Examples

Experimental program
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Embodiment 1

[0035] This embodiment provides a type I double-layer photoelectrode, the thickness of the one-dimensional nanowire array is 1 μm, the diameter of the one-dimensional nanowire is 10 nm, the diameter of the three-dimensional microsphere is 5 μm, and the thickness of the three-dimensional dendritic microsphere structure is 50 μm; Microstructural diagram such as figure 2 as shown, figure 2 (a) is a top view showing the size and stacking form of the upper three-dimensional dendritic nanospheres, figure 2 (b) Interface view, showing the combined morphology of 3D nanospheres and underlying 1D nanowires.

[0036] Follow the steps below to prepare solar cell electrodes:

[0037] (1) Prepare precursor solution: dissolve 1.4g tetraisopropyl titanate in 13.8g concentrated hydrochloric acid;

[0038]Surfactant solution: dissolve 0.25g of cetyltrimethylammonium bromide in 25g of deionized water;

[0039] Hydrolysis inhibitor solution: mix ethylene glycol and deionized water at a vol...

Embodiment 2

[0044] This embodiment provides a type II double-layer photoelectrode, the thickness of the one-dimensional nanowire array is 1 μm, the diameter of the one-dimensional nanowire is 6 nm, the diameter of the three-dimensional microsphere is 3 μm, and the thickness of the three-dimensional dendritic microsphere structure is 40 μm; Microstructural diagram such as image 3 as shown, image 3 (a) is a top view showing the size and stacking form of the upper three-dimensional dendritic nanospheres, image 3 (b) Interface view, showing the combined morphology of 3D nanospheres and underlying 1D nanowires.

[0045] Follow the steps below to prepare solar cell electrodes:

[0046] (1) Prepare precursor solution: dissolve 0.57g tetraisopropyl titanate in 13.8g concentrated hydrochloric acid;

[0047] Surfactant solution: 0.15g of cetyltrimethylammonium bromide was dissolved in 27.3g of deionized water;

[0048] Hydrolysis inhibitor solution: ethylene glycol pure solution;

[0049] M...

Embodiment 3

[0053] This embodiment provides a type III double-layer photoelectrode, the thickness of the one-dimensional nanowire array is 0.5 μm, the diameter of the one-dimensional nanowire is 4 nm, the diameter of the three-dimensional microsphere is 1.5 μm, and the thickness of the three-dimensional dendritic microsphere structure is 40 μm; Its microstructure is shown in Figure 4 as shown, Figure 4 (a) is a top view showing the size and stacking form of the upper three-dimensional dendritic nanospheres, Figure 4 (b) Interface view, showing the combined morphology of 3D nanospheres and underlying 1D nanowires.

[0054] Follow the steps below to prepare solar cell electrodes:

[0055] (1) Prepare precursor solution: dissolve 0.45g tetraisopropyl titanate in 13.8g concentrated hydrochloric acid;

[0056] Surfactant solution: 0.15g of cetyltrimethylammonium bromide was dissolved in 27.3g of deionized water;

[0057] Hydrolysis inhibitor solution: mix ethylene glycol and ethanol at ...

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Abstract

The invention relates to the technical field of solar energy capturing and conversion, and discloses a solar cell electrode, a preparation method therefor, and a solar cell comprising the electrode. The solar cell electrode has a double-layer titanium oxide micro-nano structure, wherein the lower layer is a one-dimensional nanowire array which vertically grows on a transparent conductive glass substrate, and the upper layer is a three-dimensional dendritic micro-nano ball structure stacked on the one-dimensional nanowire array. The design of the novel electrode successfully avoids a series of contradiction which cannot be considered by a conventional electrode. Compared with a conventional photoelectrode, the electrode has a large electronic transmission free path, is high in visible light absorption efficiency, has a large photoelectric conversion reaction interface, can achieve one-step integration, has an electron flow and high-reaction interface for the preparation of the solar cell with the high photoelectric conversion ratio, meets the requirements for strong scattering and absorption of visible light, greatly improves the overall performance of the solar cell, and speeds up the industrial transformation of this type of new energy devices and the final large-scale industrialized application.

Description

technical field [0001] The invention relates to the technical field of solar energy capture and conversion, in particular to a solar cell electrode, a preparation method thereof, and a solar cell comprising the electrode. Background technique [0002] Energy is the material basis for human survival and development. In recent decades, with the progress of science and technology, the development of economy and the increase of population, human beings have more and more demand for energy, and the energy problem has become one of the major issues attracting worldwide attention. Among the new clean energy sources, solar energy, especially the direct light-to-electricity conversion based on solar cells, has become the most promising candidate to replace traditional energy sources due to its inexhaustible characteristics. At present, the wide-scale application of solar cells is mainly limited by their low conversion efficiency of light energy and high preparation cost. The conver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/048H01G9/042
CPCH01G9/2031Y02E10/542
Inventor 孙子其盛立远
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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