Patents by Inventor Mehrdad Moslehi
Mehrdad Moslehi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11953389Abstract: An optical sensing system including an optical interrogator is operative with an array of reflective sensors, each sensor providing a separable reflected spectral response parameter such as a unique Gaussian standard deviation or reflected response compared to other sensors in the same operating wavelength range. The optical interrogator provides narrowband swept or broadband continuous optical power source to the array of FBG sensors, and an optical interrogator generates a g(x) representation of power vs wavelength of the reflected optical power and decomposes the representation into the wavelength of the individual sensors, thereby allowing operation of two or more FBG sensors in the same operating wavelength range.Type: GrantFiled: March 2, 2021Date of Patent: April 9, 2024Assignee: Intelligent Fiber Optic Systems CorporationInventors: Behzad Moslehi, Mehrdad Moslehi
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Patent number: 11598678Abstract: A distributed temperature sensor system has a pulsed laser coupled to a circulator, the circulator having a laser input and coupling energy to an optical reference coil in series with a measurement fiber having loops or helical turns, the circulator having a backscatter signal port coupling backscattered reflections from the measurement fiber. The backscatter signal port is coupled to a switch and mux, the switch and mux selecting either an anti-Stokes filter or a Stokes filter, the output of the mux coupled to a photodetector, the photodetector coupled to a histogram processor synchronized to the pulsed laser enable. The histogram processor uses the anti-Stokes and Stokes histogram counts associated with a sensor region to estimate a temperature of that sensor region.Type: GrantFiled: December 17, 2019Date of Patent: March 7, 2023Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Behzad Moslehi, Mehrdad Moslehi
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Publication number: 20220283045Abstract: An optical sensing system including an optical interrogator is operative with an array of reflective sensors, each sensor providing a separable reflected spectral response parameter such as a unique Gaussian standard deviation or reflected response compared to other sensors in the same operating wavelength range. The optical interrogator provides narrowband swept or broadband continuous optical power source to the array of FBG sensors, and an optical interrogator generates a g(x) representation of power vs wavelength of the reflected optical power and decomposes the representation into the wavelength of the individual sensors, thereby allowing operation of two or more FBG sensors in the same operating wavelength range.Type: ApplicationFiled: March 2, 2021Publication date: September 8, 2022Applicant: Intelligent Fiber Optic Systems CorporationInventors: Behzad MOSLEHI, Mehrdad MOSLEHI
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Patent number: 8926803Abstract: It is an object of this disclosure to provide high productivity, low cost-of-ownership manufacturing equipment for the high volume production of photovoltaic (PV) solar cell device architecture. It is a further object of this disclosure to reduce material processing steps and material cost compared to existing technologies by using gas-phase source silicon. The present disclosure teaches the fabrication of a sacrificial substrate base layer that is compatible with a gas-phase substrate growth process. Porous silicon is used as the sacrificial layer in the present disclosure. Further, the present disclosure provides equipment to produce a sacrificial porous silicon PV cell-substrate base layer.Type: GrantFiled: January 15, 2010Date of Patent: January 6, 2015Assignee: Solexel, Inc.Inventors: Doug Crafts, Mehrdad Moslehi, Subramanian Tamilmani, Joe Kramer, George D. Kamian, Somnath Nag
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Patent number: 8853521Abstract: The present disclosure presents a partially-transparent (see-through) three-dimensional thin film solar cell (3-D TFSC) substrate. The substrate includes a plurality of unit cells. Each unit cell structure has the shape of a truncated pyramid, and its parameters may be varied to allow a desired portion of sunlight to pass through.Type: GrantFiled: July 28, 2011Date of Patent: October 7, 2014Assignee: Solexel, Inc.Inventors: Mehrdad Moslehi, David Xuan-Qi Wang
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Publication number: 20130273721Abstract: A method is provided for fabricating a thin-film semiconductor substrate by forming a porous semiconductor layer conformally on a reusable semiconductor template and then forming a thin-film semiconductor substrate conformally on the porous semiconductor layer. An inner trench having a depth less than the thickness of the thin-film semiconductor substrate is formed on the thin-film semiconductor substrate. An outer trench providing access to the porous semiconductor layer is formed on the thin-film semiconductor substrate and is positioned between the inner trench and the edge of the thin-film semiconductor substrate. The thin-film semiconductor substrate is then released from the reusable semiconductor template.Type: ApplicationFiled: October 2, 2012Publication date: October 17, 2013Inventors: David Xuan-Qi Wang, Mehrdad Moslehi
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Publication number: 20130140838Abstract: This disclosure presents mobile vacuum carriers that may be used to support thin substrates that would otherwise be too brittle to transport and process. This disclosure relates to the processing of thin semiconductor substrates and has particular applicability to the fields of photovoltaic solar cells, semiconductor microelectronic integrated circuits, micro-electro-mechanical systems (MEMS), optoelectronic devices (such as light-emitting diodes, lasers, photo detectors), data storage devices, etc.Type: ApplicationFiled: December 15, 2010Publication date: June 6, 2013Applicant: SOLEXEL, INC.Inventors: David Xuan-Qi Wang, Mehrdad Moslehi
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Patent number: 8445314Abstract: A structure and method operable to create a reusable template for detachable thin semiconductor substrates is provided. The template has a shape such that the 3-D shape is substantially retained after each substrate release. Prior art reusable templates may have a tendency to change shape after each subsequent reuse; the present disclosure aims to address this and other deficiencies from the prior art, therefore increasing the reuse life of the template.Type: GrantFiled: May 24, 2010Date of Patent: May 21, 2013Assignee: Solexel, Inc.Inventors: Suketu Parikh, David Dutton, Pawan Kapur, Somnath Nag, Mehrdad Moslehi, Joe Kramer, Nevran Ozguven, Asli Buccu Ucok
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Patent number: 8278192Abstract: A method is provided for fabricating a thin-film semiconductor substrate by forming a porous semiconductor layer conformally on a reusable semiconductor template and then forming a thin-film semiconductor substrate conformally on the porous semiconductor layer. An inner trench having a depth less than the thickness of the thin-film semiconductor substrate is formed on the thin-film semiconductor substrate. An outer trench providing access to the porous semiconductor layer is formed on the thin-film semiconductor substrate and is positioned between the inner trench and the edge of the thin-film semiconductor substrate. The thin-film semiconductor substrate is then released from the reusable semiconductor template.Type: GrantFiled: February 8, 2010Date of Patent: October 2, 2012Assignee: SolexelInventors: David Xuan-Qi Wang, Mehrdad Moslehi
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Publication number: 20120174860Abstract: A template 100 for three-dimensional thin-film solar cell substrate formation for use in three-dimensional thin-film solar cells. The template 100 comprises a substrate which comprises a plurality of posts 102 and a plurality of trenches 104 between said plurality of posts 102. The template 100 forms an environment for three-dimensional thin-film solar cell substrate formation.Type: ApplicationFiled: January 9, 2012Publication date: July 12, 2012Applicant: SOLEXEL, INC.Inventor: Mehrdad Moslehi
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Patent number: 8129822Abstract: A template 100 for three-dimensional thin-film solar cell substrate formation for use in three-dimensional thin-film solar cells. The template 100 comprises a substrate which comprises a plurality of posts 102 and a plurality of trenches 104 between said plurality of posts 102. The template 100 forms an environment for three-dimensional thin-film solar cell substrate formation.Type: GrantFiled: October 6, 2007Date of Patent: March 6, 2012Assignee: Solexel, Inc.Inventor: Mehrdad Moslehi
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Patent number: 8084684Abstract: A three-dimensional thin-film solar cell 100, comprising a three-dimensional thin-film solar cell substrate comprising a plurality of single-aperture or dual-aperture unit cells with emitter junction regions 522 and doped base regions 530, emitter metallization regions 525 and base metallization regions 532. Optionally, the three-dimensional thin-film solar cell may be mounted on a rear mirror for improved light trapping and conversion efficiency.Type: GrantFiled: October 6, 2007Date of Patent: December 27, 2011Assignee: Solexel, Inc.Inventor: Mehrdad Moslehi
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Publication number: 20110265867Abstract: A template for three-dimensional thin-film solar cell substrate formation for use in three-dimensional thin-film solar cells. The template comprises a substrate which comprises a plurality of posts and a plurality of trenches between said plurality of posts. The template forms an environment for three-dimensional thin-film solar cell substrate formation.Type: ApplicationFiled: May 3, 2011Publication date: November 3, 2011Applicant: Solexel, Inc.Inventor: Mehrdad Moslehi
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Patent number: 8035028Abstract: A pyramidal three-dimensional thin-film solar cell, comprising a pyramidal three-dimensional thin-film solar cell substrate comprising a plurality of pyramid-shaped unit cells with emitter junction regions and doped base regions, emitter metallization regions and base metallization regions. Optionally, the pyramidal three-dimensional thin-film solar cell may be mounted on a rear mirror for improved light trapping and conversion efficiency.Type: GrantFiled: October 6, 2007Date of Patent: October 11, 2011Assignee: Solexel, Inc.Inventor: Mehrdad Moslehi
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Patent number: 8035027Abstract: Solar module structures and methods for assembling solar module structures. The solar module structures comprise pyramidal three-dimensional thin-film solar cells arranged in solar module structures. The pyramidal three-dimensional thin-film solar cell comprises a pyramidal three-dimensional thin-film solar cell substrate with emitter junction regions and doped base regions. The three-dimensional thin-film solar cell further includes emitter metallization regions and base metallization regions. The three-dimensional thin-film solar cell substrate comprises a plurality of pyramid-shaped unit cells. The solar module structures may be used in solar glass applications, building facade applications, rooftop installation applications as well as for centralized solar electricity generation.Type: GrantFiled: October 6, 2007Date of Patent: October 11, 2011Assignee: Solexel, Inc.Inventor: Mehrdad Moslehi
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Patent number: 7999174Abstract: Solar module structures 210 and 270 and methods for assembling solar module structures. The solar module structures 210 and 270 comprise three-dimensional thin-film solar cells 110 arranged in solar module structures 210 and 270. The three-dimensional thin-film solar cell comprises a three-dimensional thin-film solar cell substrate (124 and 122, respectively) with emitter junction regions 1352 and doped base regions 1360. The three-dimensional thin-film solar cell further includes emitter metallization regions and base metallization regions. The 3-D TFSC substrate comprises a plurality of single-aperture or dual-aperture unit cells. The solar module structures 270 using three-dimensional thin-film solar cells comprising three-dimensional thin-film solar cell substrates with a plurality of dual-aperture unit cells may be used in solar glass applications.Type: GrantFiled: October 6, 2007Date of Patent: August 16, 2011Assignee: Solexel, Inc.Inventor: Mehrdad Moslehi
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Publication number: 20110124145Abstract: A template 100 for three-dimensional thin-film solar cell substrate formation for use in three-dimensional thin-film solar cells. The template 100 comprises a substrate which comprises a plurality of posts 102 and a plurality of trenches 104 between said plurality of posts 102. The template 100 forms an environment for three-dimensional thin-film solar cell substrate formation.Type: ApplicationFiled: September 10, 2010Publication date: May 26, 2011Applicant: Solexel, Inc.Inventor: Mehrdad Moslehi
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Publication number: 20110120882Abstract: It is an object of this disclosure to provide high productivity, low cost-of-ownership manufacturing equipment for the high volume production of photovoltaic (PV) solar cell device architecture. It is a further object of this disclosure to reduce material processing steps and material cost compared to existing technologies by using gas-phase source silicon. The present disclosure teaches the fabrication of a sacrificial substrate base layer that is compatible with a gas-phase substrate growth process. Porous silicon is used as the sacrificial layer in the present disclosure. Further, the present disclosure provides equipment to produce a sacrificial porous silicon PV cell-substrate base layer.Type: ApplicationFiled: January 15, 2010Publication date: May 26, 2011Applicant: SOLEXEL, INC.Inventors: Doug Crafts, Mehrdad Moslehi, Subramanian Tamilmani, Joe Kramer, George D. Kamian, Somnath Nag
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Publication number: 20110014742Abstract: A structure and method operable to create a reusable template for detachable thin semiconductor substrates is provided. The template has a shape such that the 3-D shape is substantially retained after each substrate release. Prior art reusable templates may have a tendency to change shape after each subsequent reuse; the present disclosure aims to address this and other deficiencies from the prior art, therefore increasing the reuse life of the template.Type: ApplicationFiled: May 24, 2010Publication date: January 20, 2011Applicant: SOLEXEL, INC.Inventors: Suketu Parikh, David Dutton, Pawan Kapur, Somnath Nag, Mehrdad Moslehi, Joe Kramer, Nevran Ozguven, Asli Buccu Ucok
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Patent number: 7786376Abstract: A Schottky contact photovoltaic energy conversion cell. The Schottky contact photovoltaic energy conversion cell comprises a flexible substrate and a first array of a plurality of closely-spaced microscale pillars connected to a first electrical cell contact. The pillars and the contact are formed of (or having a top) layer of a first Schottky metal material with a work function selected for efficiently collecting photogenerated electrons. The Schottky contact photovoltaic energy conversion cell further comprises a second array of a plurality of closely-spaced microscale pillars connected to a second electrical cell contact. The pillars and the contact are formed of (or having a top) layer of a second Schottky metal material with a work function selected for efficiently collecting photogenerated holes.Type: GrantFiled: August 20, 2007Date of Patent: August 31, 2010Assignee: Solexel, Inc.Inventors: Somnath Nag, Mehrdad Moslehi