A kind of bendable flexible solar cell and its preparation method

A flexible solar cell, solar cell technology, applied in the direction of climate sustainability, sustainable manufacturing/processing, circuits, etc., can solve the problems of brittleness, small curvature radius, photoelectric conversion efficiency and low output power, etc.

Active Publication Date: 2021-04-09
TIANJIN SANAN OPTOELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Amorphous silicon solar cells have a very small radius of curvature and are more suitable for wearable solar equipment in terms of comfort and reliability, but their photoelectric conversion efficiency and output power are low, making it difficult to meet the needs of mainstream markets
Monocrystalline silicon cells or gallium arsenide cells have high conversion efficiency, but the large bending radius makes them brittle and fragile, so there are big problems in terms of comfort and reliability

Method used

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  • A kind of bendable flexible solar cell and its preparation method
  • A kind of bendable flexible solar cell and its preparation method
  • A kind of bendable flexible solar cell and its preparation method

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Embodiment Construction

[0032] A bendable flexible solar cell and a manufacturing method thereof according to the present invention will be described in detail below in conjunction with the manufacturing method.

[0033] A bendable flexible solar cell comprising the following steps:

[0034] 1. Using the MOCVD epitaxial growth process, a GaInP / GaAs flip-chip double-junction solar cell 110 is grown on a GaAs substrate 100, wherein the thickness of the GaInP / GaAs flip-chip double-junction solar cell 110 is about 5 μm, such as figure 1 shown. The GaInP / GaAs flip-chip double-junction solar cell 110 is the photoelectric conversion active layer.

[0035] 2. Using an electron beam evaporation process, deposit an ohmic contact metal layer 120 on the surface of the GaInP / GaAs flip-chip double-junction solar cell 110, which is composed of 50nm thick Ti and 50nm thick Au, and then use an electroplating process to deposit an ohmic contact metal layer 120 on the surface of the GaInP / GaAs flip-chip double junctio...

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Abstract

The invention provides a bendable flexible solar cell and a preparation method thereof, wherein the structure at least includes: a flexible substrate; a split solar cell on the flexible substrate, the split solar cell includes a plurality of battery subunits, wherein the split solar cell Both sides of the battery subunits in the battery include metal electrodes for connection, wherein the metal electrodes between the battery subunits on at least one side are bent. The flexible solar cell involved in the present invention is bendable and has an extremely small curvature radius, and is very suitable for application in fields such as wearable equipment.

Description

technical field [0001] The invention belongs to the field of flexible solar cells, and in particular relates to a bendable flexible solar cell and a preparation method thereof. Background technique [0002] In recent years, with the continuous change of people's lifestyle, people's demand for electric energy has been increasing. At present, due to the slow progress in the research of high specific energy storage battery materials, the weight of the storage battery and the storage capacity become a contradiction, that is, the heavier storage battery has a larger storage capacity, which is obviously not what people want to pursue. With the continuous improvement of photovoltaic technology, the wearable solar energy project has been proposed by scientists from many countries, that is, to integrate flexible solar cells into portable equipment (such as clothing, backpacks, soldier helmets, etc.), and use solar cells to convert solar energy into electrical energy. The purpose of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/05H01L31/18H01L31/0224
CPCY02E10/50Y02P70/50
Inventor 宋明辉张蕾李明阳刘冠洲何贵杰陈文浚
Owner TIANJIN SANAN OPTOELECTRONICS
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