Solar cell with electroplated metal grid

A technology of solar cells and metal grids, which is applied in circuits, electrical components, photovoltaic power generation, etc., and can solve the problems of metal wire peeling and unsatisfactory adhesion

Active Publication Date: 2012-04-04
TESLA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Ni-to-Si adhesion is less than ideal, and the stress from the metal stack can lead to delamination of the entire metal line

Method used

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  • Solar cell with electroplated metal grid
  • Solar cell with electroplated metal grid
  • Solar cell with electroplated metal grid

Examples

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Embodiment Construction

[0026] The following description is presented to enable any person skilled in the art to make and use these embodiments, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0027] overview

[0028] Embodiments of the present invention provide a solar cell including a metal grid formed by electroplating. A solar cell includes a crystalline-Si (c-Si) substrate, an emitter layer, a passivation layer, a metal adhesion layer, and a metal grid of front and back electrodes. The metal adhesion layer is ...

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Abstract

The present invention relates to a solar cell with an electroplated metal grid. One embodiment of the present invention provides a method for fabricating solar cells. During operation, an anti-reflection layer is deposited on top of a semiconductor structure to form a photovoltaic structure, and a front-side electrode grid comprising a metal stack is formed on top of the photovoltaic structure. The metal stack comprises a metal-adhesive layer comprising Ti or Ta, and a conducting layer comprising Cu or Ag situated above the metal-adhesive layer.

Description

[0001] Cross References to Related Applications [0002] This application requires the inventors Jianming Fu, Zheng Xu, Chentao Yu and Jiunn Benjamin Heng, filed on September 10, 2010, titled "SOLAR CELL WITH METAL GRIDS FABRICATED BY USING ELECTROPLATING", and the attorney's file number is SSP10-1010PSP Benefit of U.S. Provisional Application No. 61 / 381,659. technical field [0003] The present disclosure generally relates to the design of solar cells. More specifically, the present disclosure relates to solar cells comprising metal grids fabricated by electroplating techniques. Background technique [0004] The negative environmental impact and increased cost of using fossil fuels has created a desperate need for cleaner, cheaper alternative energy sources. Among the different forms of alternative energy sources, solar energy has become popular due to its cleanliness and wide availability. [0005] Solar cells convert light into electricity using the photovoltaic effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/18
CPCH01L31/068H01L31/022425Y02E10/50Y02E10/547H01L31/18
Inventor 傅建明徐征游晨涛王君俊
Owner TESLA INC
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