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Solar cell and manufacturing method thereof

A technology of solar cells and production methods, which are applied in the directions of circuits, photovoltaic power generation, electrical components, etc., to achieve the effects of improving warpage, improving performance, and improving crystal quality

Active Publication Date: 2020-03-24
YANGZHOU CHANGELIGHT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of this application is to provide a solar cell manufacturing method to solve the problems in the prior art such as improving the effect of the metamorphic buffer layer blocking dislocations and improving the effect of releasing stress

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  • Solar cell and manufacturing method thereof
  • Solar cell and manufacturing method thereof
  • Solar cell and manufacturing method thereof

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only It is a part of the embodiments of this application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art witho...

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Abstract

The invention discloses a solar cell and a manufacturing method thereof. The solar cell comprises a first sub-cell, a second sub-cell and a third sub-cell which are stacked in sequence; a first tunneljunction between the first sub-cell and the second sub-cell; a metamorphic buffer layer between the first tunnel junction and the second sub-cell; a second tunnel junction between the second sub-celland the third sub-cell. The metamorphic buffer layer comprises at least one window layer, an overshoot layer and at least one first sub-buffer layer. Each sub-buffer layer is located between the first sub-cell and the overshoot layer, and the lattice constant of each sub-buffer layer increases progressively in the direction from the first sub-cell to the second sub-cell. The overshoot layer is located between the sub-buffer layer closest to the second sub-cell and the window layer closest to the first sub-cell, and the lattice constant of the overshoot layer is greater than that of the secondsub-cell. Each window layer is located between the overshoot layer and the second sub-cell.

Description

Technical field [0001] This application relates to the technical field of solar cell manufacturing, in particular to a solar cell and a manufacturing method thereof. Background technique [0002] With the development of science and technology, environmental protection has also received more and more attention. In order to reduce environmental pollution, more and more use of clean energy has been made. Clean energy includes electricity converted from solar energy, and solar cells can directly convert solar energy into electricity. In the aerospace field, in order to enable the satellite to obtain enough power for its own use, solar cells are installed on the wings of the satellite. The solar cells convert the solar energy irradiated on themselves into electrical energy to power the satellite. Among them, GaInP / InGaAs / Ge lattice matching structure of triple junction battery is widely used. In the GaInP / InGaAs / Ge lattice matching structure of the triple junction cell, the current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/0687H01L31/18B82Y40/00
CPCH01L31/0687H01L31/18H01L31/02167B82Y40/00Y02E10/544Y02P70/50
Inventor 吴真龙何胜邢永禄郭文辉李俊承
Owner YANGZHOU CHANGELIGHT
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