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Title: Solar cells utilizing pulsed-energy crystallized microcrystalline/polycrystalline silicon

Abstract

A process for producing multi-terminal devices such as solar cells wherein a pulsed high energy source is used to melt and crystallize amorphous silicon deposited on a substrate which is intolerant to high processing temperatures, whereby to amorphous silicon is converted into a microcrystalline/polycrystalline phase. Dopant and hydrogenization can be added during the fabrication process which provides for fabrication of extremely planar, ultra shallow contacts which results in reduction of non-current collecting contact volume. The use of the pulsed energy beams results in the ability to fabricate high efficiency microcrystalline/polycrystalline solar cells on the so-called low-temperature, inexpensive plastic substrates which are intolerant to high processing temperatures.

Inventors:
 [1];  [2]
  1. (Pleasanton, CA)
  2. (Beaverton, OR)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
870106
Patent Number(s):
5456763
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
solar; cells; utilizing; pulsed-energy; crystallized; microcrystalline; polycrystalline; silicon; process; producing; multi-terminal; devices; pulsed; energy; source; melt; crystallize; amorphous; deposited; substrate; intolerant; processing; temperatures; whereby; converted; phase; dopant; hydrogenization; added; fabrication; provides; extremely; planar; ultra; shallow; contacts; results; reduction; non-current; collecting; contact; volume; beams; ability; fabricate; efficiency; so-called; low-temperature; inexpensive; plastic; substrates; cells utilizing; pulsed energy; energy beam; plastic substrate; amorphous silicon; solar cell; solar cells; energy source; polycrystalline silicon; fabrication process; crystalline silicon; processing temperatures; crystalline phase; plastic substrates; polycrystalline solar; beams result; current collecting; processing temperature; silicon deposited; energy beams; utilizing pulsed; /136/257/438/

Citation Formats

Kaschmitter, James L., and Sigmon, Thomas W. Solar cells utilizing pulsed-energy crystallized microcrystalline/polycrystalline silicon. United States: N. p., 1995. Web.
Kaschmitter, James L., & Sigmon, Thomas W. Solar cells utilizing pulsed-energy crystallized microcrystalline/polycrystalline silicon. United States.
Kaschmitter, James L., and Sigmon, Thomas W. Sun . "Solar cells utilizing pulsed-energy crystallized microcrystalline/polycrystalline silicon". United States. https://www.osti.gov/servlets/purl/870106.
@article{osti_870106,
title = {Solar cells utilizing pulsed-energy crystallized microcrystalline/polycrystalline silicon},
author = {Kaschmitter, James L. and Sigmon, Thomas W.},
abstractNote = {A process for producing multi-terminal devices such as solar cells wherein a pulsed high energy source is used to melt and crystallize amorphous silicon deposited on a substrate which is intolerant to high processing temperatures, whereby to amorphous silicon is converted into a microcrystalline/polycrystalline phase. Dopant and hydrogenization can be added during the fabrication process which provides for fabrication of extremely planar, ultra shallow contacts which results in reduction of non-current collecting contact volume. The use of the pulsed energy beams results in the ability to fabricate high efficiency microcrystalline/polycrystalline solar cells on the so-called low-temperature, inexpensive plastic substrates which are intolerant to high processing temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

Patent:

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