DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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):
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
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}
}

Works referenced in this record:

Temperature control system for textile tenter frame apparatus
patent, June 1976


Solar battery and method of manufacture
patent, March 1979


Solar cell with trench through pn junction
patent, January 1991


Radiation resistant passivation of silicon solar cells
patent, July 1991


Bilevel contact solar cells
patent, October 1991


Method of fabricating polysilicon emitters for solar cells
patent, October 1991


P/N junction device having porous emitter
patent, November 1994


Voltage controlled thyristor
patent, November 1994


Electroluminescent laminate with thick film dielectric
patent, July 1995


Bifacial solar cell
patent, September 1997


Photovoltaic device
patent, April 1998


Silicon thin-film, integrated solar cell, module, and methods of manufacturing the same
patent, April 2001


Method of fabricating a silicon solar cell
patent, August 2001


Interconnect structure for solar cells and method of making same
patent, November 2001


Edge passivated silicon solar/photo cell and method of manufacture
patent, December 2001


Method of fabricating a silicon solar cell
patent, January 2002


Method of fabricating a silicon solar cell
patent, May 2002


Silicon thin-film, integrated solar cell, module, and methods of manufacturing the same
patent, July 2002


Method of fabricating a silicon solar cell
patent, July 2002


Direct positive image photo-resist transfer of substrate design
patent, March 2005


Use of doped silicon dioxide in the fabrication of solar cells
patent, February 2006


CT detector array having non pixelated scintillator array
patent, May 2006


Fabrication methods for ultra thin back-illuminated photodiode array
patent, September 2006


Use of doped silicon dioxide in the fabrication of solar cells
patent, November 2006


Phosphor materials and illumination devices made therefrom
patent, October 2007


Methods for creating a densified group IV semiconductor nanoparticle thin film
patent, April 2009


Methods for optimizing thin film formation with reactive gases
patent, August 2009


Methods of forming multi-doped junctions on a substrate
patent, November 2009


Methods for forming composite nanoparticle-metal metallization contacts on a substrate
patent, April 2010


Method for preparing nanoparticle thin films
patent, May 2010


Preparation of group IV semiconductor nanoparticle materials and dispersions thereof
patent, June 2010


Method for manufacturing divided waveplate filter
patent, August 2010


Array substrate
patent, August 2010


Preventing harmful polarization of solar cells
patent, August 2010


Singulating semiconductor wafers to form semiconductor chips
patent, September 2010


Back side contact solar cell structures and fabrication processes
patent, October 2010


Trench process and structure for backside contact solar cells with polysilicon doped regions
patent, December 2010


Methods of forming a low resistance silicon-metal contact
patent, January 2013


Fast turn on/off photovoltaic generator for photovoltaic relay
patent-application, June 2003


Discrete and integrated photo voltaic solar cells
patent-application, July 2005


Apparatus for detecting ionizing radiation
patent-application, August 2005


Process and fabrication methods for emitter wrap through back contact solar cells
patent-application, March 2006


Preventing harmful polarization of solar cells
patent-application, September 2006


Electrode Material, Solar Cell, And Method For Producing Solar Cell
patent-application, September 2007


Solar cell with reduced base diffusion area
patent-application, January 2008


High Density Photodiodes
patent-application, March 2008


Thin wafer detectors with improved radiation damage and crosstalk characteristics
patent-application, June 2008


Solar cell structures, photovoltaic panels and corresponding processes
patent-application, August 2008


Oxynitride passivation of solar cell
patent-application, October 2008


Array of small contacts for solar cell fabrication
patent-application, December 2008


Anti-Reflective Coating With High Optical Absorption Layer For Backside Contact Solar Cells
patent-application, June 2009


Front contact solar cell with formed emitter
patent-application, August 2009


Methods for forming mutiple-layer electrode structures for silicon photovoltaic cells
patent-application, September 2009


Trench Process and Structure for Backside Contact Solar Cells with Polysilicon Doped Regions
patent-application, December 2009


Generation Of Contact Masks For Inkjet Printing On Solar Cell Substrates
patent-application, March 2010


Back Contact Sliver Cells
patent-application, June 2010


Methods and Apparatus for Metallization of Solar Cells
patent-application, September 2010


Ion Implantation Fabrication Process for Thin-Film Crystalline Silicon Solar Cells
patent-application, December 2010


Laser Processing for High-Efficiency Thin Crystalline Silicon Solar Cell Fabrication
patent-application, February 2012


Method for Forming Structures in a Solar Cell
patent-application, March 2012


Hybrid Polysilicon Heterojunction Back Contact Cell
patent-application, June 2013


A flat-plate concentrator: micro-concentrator design overview
conference, January 2000

  • Mulligan, W. P.; Terao, A.; Daroczi, S. G.
  • 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.2000.916177

Development of chip-size silicon solar cells
conference, January 2000

  • Mulligan, W. P.; Terao, A.; Smith, D. D.
  • 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.2000.915778

A mirror-less design for micro-concentrator modules
conference, January 2000

  • Terao, A.; Mulligan, W. P.; Daroczi, S. G.
  • 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.2000.916158

The promise of concentrators
journal, January 2000


Simplified backside-contact solar cells
journal, January 1990


Silicon Ink high efficiency solar cells
conference, June 2009


Alkyl-Functionalized Oxide-Free Silicon Nanoparticles: Synthesis and Optical Properties
journal, October 2008