Method for fabricating flexible solar cell front electrode by graphene conductive film

A flexible solar cell and graphene film technology, applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of increasing the effective light-receiving area of ​​solar cells, inaccessibility, and limited mechanical strength, so as to achieve suitable flexible production and application, increased power output, and the effect of excellent mechanical properties

Inactive Publication Date: 2019-11-12
绵阳皓华光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This part of light energy irradiated on the electrode will not be able to reach the light-receiving surface so as to be converted into electrical energy. From the perspective of increasing the effective light-receiving area of ​​the solar cell, we hope that the thinner the grid line, the better. However, since the present invention belongs to Flexible solar cells or mobile energy battery products require higher mechanical strength of the grid, and the fun

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  • Method for fabricating flexible solar cell front electrode by graphene conductive film
  • Method for fabricating flexible solar cell front electrode by graphene conductive film
  • Method for fabricating flexible solar cell front electrode by graphene conductive film

Examples

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Example Embodiment

[0045] Example 1:

[0046] An implementation form of a method for preparing a front electrode of a flexible solar cell by using a graphene conductive film, including the following steps:

[0047] Step 1: Choose a PEN film substrate with a length of 300mm, a width of 60mm, and a thickness of 0.3-0.6mm (such as figure 1 Shown) ready for use; the used PEN film substrate has 1, good chemical stability, PEN is stable to organic solutions and chemicals, and has better acid and alkali resistance than PET; 2, good heat resistance, due to the naphthalene ring Improved the aromaticity of macromolecules, so that PEN has better thermal properties than PET. After PEN is placed in humid air at 130 degrees for 500 hours, the elongation only decreases by 10%, and after placing it in dry air at 180 degrees for 10 hours , The elongation can still maintain 50%; 3. Good resistance to ultraviolet radiation, due to the strong ultraviolet light absorption capacity of naphthalene's bicyclic structure, PEN...

Example Embodiment

[0058] Example 2:

[0059] An implementation form of a method for preparing a front electrode of a flexible solar cell by using a graphene conductive film, including the following steps:

[0060] Step 1: Choose a PEN film substrate with a length of 300mm, a width of 60mm, and a thickness of 0.3-0.6mm (such as figure 1 Shown) ready for use; the used PEN film substrate has 1, good chemical stability, PEN is stable to organic solutions and chemicals, and has better acid and alkali resistance than PET; 2, good heat resistance, due to the naphthalene ring Improved the aromaticity of macromolecules, so that PEN has better thermal properties than PET. After PEN is placed in humid air at 130 degrees for 500 hours, the elongation only decreases by 10%, and after placing it in dry air at 180 degrees for 10 hours , The elongation can still maintain 50%; 3. Good resistance to ultraviolet radiation, due to the strong ultraviolet light absorption capacity of naphthalene's bicyclic structure, PEN...

Example Embodiment

[0071] Example 3:

[0072] An implementation form of a method for preparing a front electrode of a flexible solar cell by using a graphene conductive film, including the following steps:

[0073] Step 1: Choose a PEN film substrate with a length of 300mm, a width of 60mm, and a thickness of 0.3-0.6mm (such as figure 1 Shown) ready for use; the used PEN film substrate has 1, good chemical stability, PEN is stable to organic solutions and chemicals, and has better acid and alkali resistance than PET; 2, good heat resistance, due to the naphthalene ring Improved the aromaticity of macromolecules, so that PEN has better thermal properties than PET. After PEN is placed in humid air at 130 degrees for 500 hours, the elongation only decreases by 10%, and after placing it in dry air at 180 degrees for 10 hours , The elongation can still maintain 50%; 3. Good resistance to ultraviolet radiation, due to the strong ultraviolet light absorption capacity of naphthalene's bicyclic structure, PEN...

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Abstract

The invention discloses a method for fabricating a flexible solar cell front electrode by a graphene conductive film. The method comprises the steps of 1, selecting a PEN thin film substrate for use;2, cleaning the PEN thin film substrate, and drying the PEN thin film substrate by an infrared drying box; 3, selecting the graphene conductive film; 4, immersing the graphene conductive film in an ammonium persulphate solution for full reaction to obtain a separated graphene film for use; 5, inserting the PEN thin film substrate into a separation vessel to prepare a PEN-based graphene composite conductive film; 6, laminating the PEN-based graphene composite conductive film and a flexible solar cell chip to fabricate a flexible solar cell front electrode module; 7, performing pre-hot-pressingand fixing on the flexible solar cell front electrode module; and 8, separately packaging and forming the flexible solar cell front electrode module in the step 7 to fabricate the flexible solar cellfront electrode. With the adoption of the method, the light transmittance, the stretching strength and the conductivity of the front electrode are greatly improved.

Description

technical field [0001] The invention relates to a method for preparing a front electrode of a flexible solar cell. More specifically, the present invention relates to a method for preparing a flexible solar cell front electrode using a graphene conductive film. Background technique [0002] At present, the production technology of flexible solar cells has not been popularized in China, and silver, copper, or silver-copper alloys are generally used in the manufacturing process of the front electrodes of solar cells. [0003] First of all, the screen printing process is the mainstream manufacturing technology, and silver or copper is used as the main grid line or the sub-grid line with a diameter of 0.2-2mm. as attached figure 1 Shown are common ways in which solar cells lose light. Specifically, when sunlight enters the battery from the front of the battery, the metal electrodes on the front will block a part of the light-receiving surface of the solar cell. This part of ...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/0224
CPCH01L31/022425H01L31/18Y02E10/50Y02P70/50
Inventor 胡绍莱陈培专李仁龙魏昌华高翔
Owner 绵阳皓华光电科技有限公司
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