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Title: Solar cell contact formation using laser ablation

Abstract

The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline material layer; and forming conductive contacts in the plurality of contact holes.

Inventors:
; ;
Issue Date:
Research Org.:
SunPower Corporation, San Jose, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1082483
Patent Number(s):
8324015
Application Number:
12/895,437
Assignee:
SunPower Corporation (San Jose, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
FC36-07GO17043
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Harley, Gabriel, Smith, David, and Cousins, Peter. Solar cell contact formation using laser ablation. United States: N. p., 2012. Web.
Harley, Gabriel, Smith, David, & Cousins, Peter. Solar cell contact formation using laser ablation. United States.
Harley, Gabriel, Smith, David, and Cousins, Peter. Tue . "Solar cell contact formation using laser ablation". United States. https://www.osti.gov/servlets/purl/1082483.
@article{osti_1082483,
title = {Solar cell contact formation using laser ablation},
author = {Harley, Gabriel and Smith, David and Cousins, Peter},
abstractNote = {The formation of solar cell contacts using a laser is described. A method of fabricating a back-contact solar cell includes forming a poly-crystalline material layer above a single-crystalline substrate. The method also includes forming a dielectric material stack above the poly-crystalline material layer. The method also includes forming, by laser ablation, a plurality of contacts holes in the dielectric material stack, each of the contact holes exposing a portion of the poly-crystalline material layer; and forming conductive contacts in the plurality of contact holes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {12}
}

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Works referenced in this record:

Laser-fired rear contacts for crystalline silicon solar cells: LASER-FIRED CONTACTS
journal, January 2002


Laser ablation of SiO2 for locally contacted Si solar cells with ultra-short pulses
journal, January 2007


New simplified methods for patterning the rear contact of RP-PERC high-efficiency solar cells
conference, January 2000

  • Glunz, S. W.; Preu, R.; Schaefer, S.
  • 28th IEEE Photovoltaic Specialists Conference, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036)
  • https://doi.org/10.1109/PVSC.2000.915780