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Multilayered film used for solar energy cell, preparation method thereof and purpose thereof

A technology of solar cells and multi-layer thin films, which can be applied to circuits, photovoltaic power generation, electrical components, etc., can solve the problem of high battery cost, and achieve the effect of reducing production cost and increasing photoelectric conversion efficiency.

Inactive Publication Date: 2012-03-14
朱忻 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing batteries are basically gallium arsenide triple-junction solar cells based on single-crystal germanium substrates. The cost of batteries is very high, and they are mainly used in aerospace and military fields.

Method used

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  • Multilayered film used for solar energy cell, preparation method thereof and purpose thereof
  • Multilayered film used for solar energy cell, preparation method thereof and purpose thereof
  • Multilayered film used for solar energy cell, preparation method thereof and purpose thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Example 1 III-V triple-junction tandem battery based on metal substrate provided by the present invention and preparation method thereof

[0050] This embodiment is a III-V triple-junction series battery based on a metal substrate provided by the present invention, and its complete structure is as follows Figure 4 shown, where:

[0051] 1 is an inexpensive amorphous substrate, which can be a copper substrate or an aluminum substrate, and is also used as one of the electrodes for current output.

[0052] 2 is a metal buffer lamination layer, mainly titanium-molybdenum-copper alloy, with a thickness of about 2 microns.

[0053] 3 is a high-concentration p-type doped gallium indium arsenide conductive layer with a thickness of 200 nanometers and a p-type doping concentration of 5×10 18 cm -3 .

[0054] 4 is the p-type gallium indium arsenide absorber layer, and the molar composition is In 0.3 Ga 0.7 As 1 , its lattice constant is 0.5775 nanometers, the correspond...

Embodiment 2

[0078] Example 2 III-V double junction tandem battery based on metal substrate provided by the present invention

[0079] This embodiment is a III-V group double-junction series battery provided by the present invention. remove Figure 4 Layers 4, 5, 6, and 7 in the structure constitute a double-junction P-N junction tandem battery based on gallium indium phosphide (InGaP) and gallium arsenide (GaAs), and its specific preparation process is the same as that of embodiment 1.

[0080] It has been determined that the conversion efficiency of the III-V family double-junction tandem battery is above 25%.

Embodiment 3

[0081] Example 3 Application of multi-junction thin-film solar cells based on amorphous lining provided by the present invention

[0082] This embodiment is an application of the high-efficiency multi-junction thin-film solar cell on an amorphous substrate of the present invention.

[0083] The application of the amorphous substrate high-efficiency multi-junction thin-film solar cell developed by the present invention can be widely used in the field of solar power generation, including civil and commercial rooftop power generation, power supply and charging of personal portable electronic products, and medium-scale solar cells in urban suburbs. Large-scale solar power stations connected to the grid, etc.

[0084] 1. Application of the solar cell of the present invention in the field of solar power generation

[0085] Due to the characteristics of high-efficiency multi-junction thin-film solar cells based on amorphous substrates, which are easy to integrate, high reliability...

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Abstract

The invention provides a multilayered film used for a solar energy cell, a preparation method thereof and a purpose thereof. The multilayered film comprises the following parts: (1) an amorphous substrate such as metal, glass and ceramic; (2) a plurality of series connected P-N knots formed by III-V family semi conducting materials. In the invention, with a method of peeling off epitaxy, a multijunction film solar energy cell is prepared on the amorphous substrate, material chemical constitution is stable, cost is low, and the cell can be directly assembled on a foldable substrate or other amorphous substrate.

Description

technical field [0001] The invention belongs to the technical field of semiconductor materials, in particular to a multi-layer thin film for multi-junction semiconductor solar cells and its preparation method and application, especially a high-efficiency thin film composed of III-V semiconductor materials (GaAs, GaInP, etc.) multi-junction solar cells. Background technique [0002] As a renewable new energy source, solar energy has attracted more and more attention. Photovoltaic power generation is a way of utilizing solar energy, and it has been widely valued because of its energy-saving and environmental protection effects. It is expected that solar power will account for more than 20% of the world's electricity supply by 2030 and more than 50% by 2050. Large-scale development and utilization of solar energy will occupy a very important position in the entire energy supply. [0003] Traditional solar cells, including the first-generation cells based on monocrystalline s...

Claims

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Application Information

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IPC IPC(8): H01L31/0392H01L31/04H01L31/18H01L31/0445H01L31/047
CPCY02B10/10Y02E10/50Y02P70/50
Inventor 王伟明朱忻
Owner 朱忻
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