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Flexible solar cell and its preparation method

A solar cell, flexible technology, applied in the field of solar cells, can solve problems such as blocking effect and unsatisfactory binding force

Active Publication Date: 2017-04-12
CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a flexible solar cell and a preparation method thereof for the problems of the barrier effect and unsatisfactory bonding force of the diffusion barrier layer of the flexible solar cell existing in the above-mentioned prior art. At the same time, the present invention provides A flexible solar cell diffusion barrier

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  • Flexible solar cell and its preparation method

Examples

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Effect test

Embodiment 1

[0053] Example 1 This example is about a flexible solar cell, a diffusion barrier layer and a preparation method.

[0054] The structure of the flexible solar cell is as follows: the base 1 is molybdenum foil; the diffusion barrier layer 2 is a three-layer structure with a thickness of 1200nm, wherein the base layer 201 is molybdenum, the middle layer 202 is titanium nitride, and the first electrode layer 203 is chromium The first electrode layer 3 is molybdenum; the absorption layer 4 is a copper indium gallium selenide film; the buffer layer 5 is cadmium sulfide; the second electrode layer 6 is zinc oxide doped with aluminum; the antireflection layer 7 is magnesium fluoride; For nickel / aluminum / nickel.

[0055] Preparation:

[0056] (1) Treatment of the molybdenum foil substrate 1: Polishing was performed with a mixed solution of methanol and concentrated sulfuric acid, the volume ratio of methanol:concentrated sulfuric acid was 1:5, the polishing time was 300s, and the vol...

Embodiment 2

[0074] Embodiment 2 This embodiment is a flexible solar cell, a diffusion barrier layer and a preparation method

[0075] The flexible solar cell structure is as follows: the substrate 1 is molybdenum foil; the diffusion barrier layer 2 is a three-layer structure. 1200nm; the first electrode layer 3 is molybdenum; the absorption layer 4 is copper indium gallium selenide film; the buffer layer 5 is cadmium sulfide; the second electrode layer 6 is zinc oxide doped with aluminum; the antireflection layer 7 is magnesium fluoride; the surface electrode layer 8 is nickel aluminum nickel.

[0076] Preparation:

[0077] (1) Treatment of molybdenum foil substrate 1: Polishing was performed with a mixed solution of methanol and concentrated sulfuric acid, the volume ratio of methanol:concentrated sulfuric acid was 1:5, the polishing time was about 300s, and the voltage was about 6V.

[0078] (2) Preparation of diffusion barrier layer 2:

[0079] The base layer 201 of the diffusion ba...

Embodiment 3

[0088] Embodiment 3 This embodiment is a flexible solar cell, a diffusion barrier layer and a preparation method

[0089] Flexible solar cell structure: the substrate 1 is molybdenum foil; the diffusion barrier layer 2 is a three-layer structure, the diffusion barrier layer 2 is made of chrome near the base layer 201, the middle layer 202 is silicon carbide, and the layer 203 near the first electrode is made of chromium. The thickness of layer 2 is 1200nm; the first electrode layer 3 is molybdenum; the absorption layer 4 is copper indium gallium selenide film; the buffer layer 5 is cadmium sulfide; the second electrode layer 6 is zinc oxide doped with aluminum; the antireflection layer 7 is magnesium fluoride ; The surface electrode layer 8 is nickel aluminum nickel.

[0090] Preparation:

[0091] (1) Treatment of molybdenum foil substrate 1: Polishing with a mixed solution of methanol and concentrated sulfuric acid, the ratio of methanol:concentrated sulfuric acid can be abo...

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Abstract

The invention relates to the field of solar cells, specifically relates to a flexible solar cell and a preparation method therefor, and also discloses a flexible solar cell diffusion impervious layer. The solar cell comprises a flexible substrate, a diffusion impervious layer, a first electrode layer, an absorption layer, a buffering layer, a second electrode layer, an anti-reflection layer, and a surface electrode layer, wherein the diffusion impervious layer, the first electrode layer, the absorption layer, the buffering layer, the second electrode layer, the anti-reflection layer and the surface electrode layer are sequentially formed on the flexible substrate. The diffusion impervious layer is in a structure with three or more layers, and each layer of the structure is made of any elements selected from the following elements: aluminium, molybdenum, titanium, nickel, copper, zirconium, niobium, chromium, ruthenium, rhodium, palladium, tantalum, tungsten, iridium, osmium, platinum, gold, silver, or alloy thereof, silicon nitride, silicon oxide or silicon carbide, or titanium nitride, tantalum nitride, tungsten nitride, or zirconium nitride. According to the invention, the diffusion impervious layer can effectively prevent substrate impurities from entering the absorption layer, and remarkably increases the binding force of the diffusion impervious layer with the substrate and the first electrode layer.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a flexible solar cell and a preparation method thereof. Background technique [0002] With the continuous increase of human energy consumption, the depletion of non-renewable energy sources such as fossil fuels has become an urgent problem to be solved. The total consumption of fossil energy will reach an inflection point around 2030, and the proportion of renewable energy will continue to rise. Among them, the proportion of solar energy in the future energy structure will become larger and larger. It is conservatively estimated that this proportion will exceed 60% in 2100. . Solar energy is the most abundant energy among many renewable energy sources. The energy of global sunlight for one hour is equivalent to the energy consumption of the earth for a year, which is much higher than wind energy, geothermal energy, hydropower, ocean energy, biomass energy and other energy so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0352H01L31/0264H01L31/0224H01L31/18
CPCY02P70/50
Inventor 叶勤燕梅军廖成刘江何绪林刘焕明
Owner CHENGDU SCI & TECH DEV CENT CHINA ACAD OF ENG PHYSICS