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Title: Photovoltaic healing of non-uniformities in semiconductor devices

Abstract

A method of making a photovoltaic device using light energy and a solution to normalize electric potential variations in the device. A semiconductor layer having nonuniformities comprising areas of aberrant electric potential deviating from the electric potential of the top surface of the semiconductor is deposited onto a substrate layer. A solution containing an electrolyte, at least one bonding material, and positive and negative ions is applied over the top surface of the semiconductor. Light energy is applied to generate photovoltage in the semiconductor, causing a redistribution of the ions and the bonding material to the areas of aberrant electric potential. The bonding material selectively bonds to the nonuniformities in a manner such that the electric potential of the nonuniformities is normalized relative to the electric potential of the top surface of the semiconductor layer. A conductive electrode layer is then deposited over the top surface of the semiconductor layer.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
University Of Toledo, Toledo, OH (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175896
Patent Number(s):
7098058
Application Number:
11/035,170
Assignee:
University Of Toledo
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
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
NERL-NDJ-1-30630-02
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Karpov, Victor G., Roussillon, Yann, Shvydka, Diana, Compaan, Alvin D., and Giolando, Dean M. Photovoltaic healing of non-uniformities in semiconductor devices. United States: N. p., 2006. Web.
Karpov, Victor G., Roussillon, Yann, Shvydka, Diana, Compaan, Alvin D., & Giolando, Dean M. Photovoltaic healing of non-uniformities in semiconductor devices. United States.
Karpov, Victor G., Roussillon, Yann, Shvydka, Diana, Compaan, Alvin D., and Giolando, Dean M. Tue . "Photovoltaic healing of non-uniformities in semiconductor devices". United States. https://www.osti.gov/servlets/purl/1175896.
@article{osti_1175896,
title = {Photovoltaic healing of non-uniformities in semiconductor devices},
author = {Karpov, Victor G. and Roussillon, Yann and Shvydka, Diana and Compaan, Alvin D. and Giolando, Dean M.},
abstractNote = {A method of making a photovoltaic device using light energy and a solution to normalize electric potential variations in the device. A semiconductor layer having nonuniformities comprising areas of aberrant electric potential deviating from the electric potential of the top surface of the semiconductor is deposited onto a substrate layer. A solution containing an electrolyte, at least one bonding material, and positive and negative ions is applied over the top surface of the semiconductor. Light energy is applied to generate photovoltage in the semiconductor, causing a redistribution of the ions and the bonding material to the areas of aberrant electric potential. The bonding material selectively bonds to the nonuniformities in a manner such that the electric potential of the nonuniformities is normalized relative to the electric potential of the top surface of the semiconductor layer. A conductive electrode layer is then deposited over the top surface of the semiconductor layer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {8}
}

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Works referenced in this record:

Advances in performance and high-throughput manufacturing of thin-film CdS/CdTe modules
conference, January 2002

  • Rose, D.; Powell, R.; Jayamaha, U.
  • Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference 2002, Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002.
  • https://doi.org/10.1109/PVSC.2002.1190625

Nonuniform power generation in polycrystalline thin film photovoltaics
conference, January 2000

  • Karpov, V. G.; Harju, R.; Dorer, G.
  • 28th IEEE Photovoltaic Specialists Conference, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036)
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