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Method for preparing porous metal film transparent conducting electrode based on cracking template method

A porous metal and transparent film technology, which is applied in the direction of circuits, electrical components, semiconductor devices, etc., can solve the problem of synergistic improvement of the optical transmittance and conductivity of nano-silver wire electrodes, difficulty in controlling the contact resistance of nano-wires, and the difficulty of contact resistance. Adhesion problems are difficult to solve and other problems, to achieve excellent light transmission, improve carrier collection efficiency, and improve electron collection efficiency

Active Publication Date: 2013-07-31
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to realize the synergistic improvement of the optical transmittance and conductivity of silver nanowire electrodes by adjusting the structure of silver nanowire thin film electrodes; at the same time (1) adjust the large-scale synthesis of silver nanowires with large aspect ratios, and Uniform dispersion of nanowires is a difficult problem; (2) It is very difficult to improve the contact resistance between nanowires by annealing and other methods; (3) The contact resistance and adhesion between nano-silver electrodes and substrates or activation layers are difficult to solve

Method used

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  • Method for preparing porous metal film transparent conducting electrode based on cracking template method
  • Method for preparing porous metal film transparent conducting electrode based on cracking template method
  • Method for preparing porous metal film transparent conducting electrode based on cracking template method

Examples

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Embodiment 1

[0041] In Example 1, the method for preparing a porous metal film transparent conductive electrode based on a cracked template is as follows: figure 1 , where (1) deposition of the cracked film; (2) drying at room temperature; (3) formation of film cracks as Figure 4 (2000x magnification) and Figure 5 (12000 times magnification); (4) metal thin film deposition as Figure 6 (1000x magnification) and Figure 7 (8000 times magnification); (5) removal of cracked film; (6) formation of patterned metal nano film electrodes. It includes four main steps: one is the synthesis of the cracking liquid, the second is the deposition of the cracking liquid and cracks, the third is the deposition of metal or alloy films by magnetron sputtering, and the fourth is the removal of the cracked template and the surface of the sample Clean up to obtain porous metal film transparent conductive electrode samples such as figure 2 (50x magnification optical photo) and image 3 (Magnified 100x op...

Embodiment 2

[0059] The method for preparing a porous metal thin film transparent conductive electrode based on the crack template method provided in this embodiment includes the following steps:

[0060] (1) Synthetic cracking fluid

[0061] Using tetrabutyl titanate as raw material, first dissolve tetrabutyl titanate in absolute ethanol to form a solution a 1 , followed by mixing absolute ethanol, glacial acetic acid and deionized water to form a solution a 2 , the solution a 1 and solution a 2 Obtain solution a through magnetic stirring and mixing 3 , then in solution a 3Add absolute ethanol to the mixture, and continue to stir until the solution changes from transparent light yellow to a muddy milky white suspension to obtain the cracking liquid microcrystallized titanium dioxide sol. Wherein, in the cracking liquid configuration process, adjust the volume ratio of absolute ethanol and tetrabutyl titanate to be 6:1, 5.5:2, 5:1, 4.5:1, 4:1, 3.5:1 respectively, magnetic stirring Th...

Embodiment 3

[0068] The method for preparing a porous metal thin film transparent conductive electrode based on the crack template method provided in this embodiment includes the following steps:

[0069] (1) Preparation of cracking fluid

[0070] Using tetrabutyl titanate as raw material, first dissolve tetrabutyl titanate in absolute ethanol to form a solution a 1 , followed by mixing absolute ethanol, glacial acetic acid and deionized water to form a solution a 2 , the solution a 1 and solution a 2 Obtain solution a through magnetic stirring and mixing 3 , then in solution a 3 Add absolute ethanol to the solution and continue to stir until the solution changes from transparent light yellow to milky white suspension to obtain microcrystalline titanium dioxide sol. Ensure that the volume ratio of absolute ethanol and tetrabutyl titanate in the used cracking solution is 6:1, the rotating speed is 300r / min during magnetic stirring, and the magnetic stirring time is 3h; The diameter is...

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Abstract

A method for preparing a porous metal film transparent conducting electrode based on a cracking template method comprises the following steps: (1) synthesizing cracking liquid: taking tetrabutyl titanate as a raw material to synthesize microcrystalline titanium dioxide collosol, and obtaining the cracking liquid, (2) fabricating a cracking template: uniformly depositing a cracking film on a substrate with the cracking liquid by a spin-coating method or a lifting method, controlling a temperature condition to allow the cracking film to be cracked naturally to form the cracking template, (3) depositing a metal film: depositing the dense metal film on the cracking template by a magnetron sputtering manner, and (4) removing the cracking template: removing the cracking template from the substrate, cleaning the surface, and forming the porous metal film transparent electrode on the substrate. The transparent conducting electrode prepared with the method has excellent photoelectric properties and higher mechanical and environmental stability; a preparation technology is simple; the resource consumption is low; the transparent conducting electrode is a favorable replacer of the traditional metal oxide electrode; the efficiency of a solar cell can be improved; and the cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of thin film electrodes, and in particular relates to a method for preparing a porous metal thin film transparent conductive electrode based on a crack template method. Background technique [0002] The transparent conductive front electrode is one of the important components of solar cells, which has an important influence on the short-circuit current and fill factor of solar cells. Generally speaking, a transparent conductive electrode refers to a transmittance greater than 80% for the spectrum of the incident light wavelength range between 380 nm and 780 nm, and a resistivity lower than 10 -3 Ω·cm film electrode. In 1907, Badeker reported the translucent conductive CdO material for the first time. It was not until the Second World War that the transparent conductive film (Transparent conductive film, TCF) material received enough attention and application. Now, TCF materials (such as ITO (Indium tin ox...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 高进伟韩兵裴颗王洋
Owner SOUTH CHINA NORMAL UNIVERSITY
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