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Title: Fabricating solar cells with silicon nanoparticles

Abstract

A laser contact process is employed to form contact holes to emitters of a solar cell. Doped silicon nanoparticles are formed over a substrate of the solar cell. The surface of individual or clusters of silicon nanoparticles is coated with a nanoparticle passivation film. Contact holes to emitters of the solar cell are formed by impinging a laser beam on the passivated silicon nanoparticles. For example, the laser contact process may be a laser ablation process. In that case, the emitters may be formed by diffusing dopants from the silicon nanoparticles prior to forming the contact holes to the emitters. As another example, the laser contact process may be a laser melting process whereby portions of the silicon nanoparticles are melted to form the emitters and contact holes to the emitters.

Inventors:
; ;
Issue Date:
Research Org.:
SunPower Corporation, San Jose, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1154931
Patent Number(s):
8822262
Application Number:
13/335,550
Assignee:
SunPower Corporation (San Jose, CA)
Patent Classifications (CPCs):
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
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
DOE Contract Number:  
FC36-07GO17043
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Loscutoff, Paul, Molesa, Steve, and Kim, Taeseok. Fabricating solar cells with silicon nanoparticles. United States: N. p., 2014. Web.
Loscutoff, Paul, Molesa, Steve, & Kim, Taeseok. Fabricating solar cells with silicon nanoparticles. United States.
Loscutoff, Paul, Molesa, Steve, and Kim, Taeseok. Tue . "Fabricating solar cells with silicon nanoparticles". United States. https://www.osti.gov/servlets/purl/1154931.
@article{osti_1154931,
title = {Fabricating solar cells with silicon nanoparticles},
author = {Loscutoff, Paul and Molesa, Steve and Kim, Taeseok},
abstractNote = {A laser contact process is employed to form contact holes to emitters of a solar cell. Doped silicon nanoparticles are formed over a substrate of the solar cell. The surface of individual or clusters of silicon nanoparticles is coated with a nanoparticle passivation film. Contact holes to emitters of the solar cell are formed by impinging a laser beam on the passivated silicon nanoparticles. For example, the laser contact process may be a laser ablation process. In that case, the emitters may be formed by diffusing dopants from the silicon nanoparticles prior to forming the contact holes to the emitters. As another example, the laser contact process may be a laser melting process whereby portions of the silicon nanoparticles are melted to form the emitters and contact holes to the emitters.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {9}
}

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Works referenced in this record:

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