Patents by Inventor Petr Khomyakov

Petr Khomyakov 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).

  • Photovoltaic device with band-stop filter
    Patent number: 11908963
    Abstract: Photovoltaic device with band-stop filter. The photovoltaic device includes an amorphous photovoltaic material and a band-stop filter structure having a stopband extending from a lower limiting angular frequency ?min?0 to an upper limiting angular frequency ?max where ?max>?min. The band-stop filter structure is arranged in the photovoltaic device relative to the photovoltaic material in order to attenuate electromagnetic radiations reaching the photovoltaic material with angular frequencies of ?* in the stopband, so that ?min<?*<?max. The angular frequencies ?* correspond to electronic excitations ??* from valence band tail (VBT) states of the amorphous photovoltaic material to conduction band tail (CBT) states of the amorphous photovoltaic material.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: February 20, 2024
    Assignees: INTERNATIONA BUSINESS MACHINES CORPORATION, EGYPT NANOTECHNOLOGY CENTER
    Inventors: Wanda Andreoni, Alessandro Curioni, Petr Khomyakov, Jeehwan Kim, Devendra K. Sadana, Nasser D. Afify
  • Silicon: hydrogen photovoltaic devices, such as solar cells, having reduced light induced degradation and method of making such devices
    Patent number: 8927857
    Abstract: A method of producing a photovoltaic device includes providing a stretchable substrate for the photovoltaic device; and stretching the substrate to produce a stretched substrate. The method further includes depositing a structure comprising hydrogenated amorphous silicon onto the stretched substrate; and subjecting the deposited hydrogenated amorphous silicon structure and the stretched substrate to a compressive force to form a compressively strained photovoltaic device.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: January 6, 2015
    Assignee: International Business Machines Corporation
    Inventors: Ahmed Abou-Kandil, Nasser Afify, Wanda Andreoni, Alessandro Curioni, Augustin J. Hong, Jeehwan Kim, Petr Khomyakov, Devendra K. Sadana
  • PHOTOVOLTAIC DEVICE WITH BAND-STOP FILTER
    Publication number: 20130312828
    Abstract: Photovoltaic device with band-stop filter. The photovoltaic device includes an amorphous photovoltaic material and a band-stop filter structure having a stopband extending from a lower limiting angular frequency ?min?0 to an upper limiting angular frequency ?max where ?max>?min. The band-stop filter structure is arranged in the photovoltaic device relative to the photovoltaic material in order to attenuate electromagnetic radiations reaching the photovoltaic material with angular frequencies of ?* in the stopband, so that ?min<?*<?max. The angular frequencies ?* correspond to electronic excitations ??* from valence band tail (VBT) states of the amorphous photovoltaic material to conduction band tail (CBT) states of the amorphous photovoltaic material.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 28, 2013
    Inventors: Nasser D. Afify, Wanda Andreoni, Alessandro Curioni, Petr Khomyakov, Jeehwan Kim, Devendra K. Sadana
  • Silicon: Hydrogen Photovoltaic Devices, Such As Solar Cells, Having Reduced Light Induced Degradation And Method Of Making Such Devices
    Publication number: 20120216862
    Abstract: A method of producing a photovoltaic device includes providing a stretchable substrate for the photovoltaic device; and stretching the substrate to produce a stretched substrate. The method further includes depositing a structure comprising hydrogenated amorphous silicon onto the stretched substrate; and subjecting the deposited hydrogenated amorphous silicon structure and the stretched substrate to a compressive force to form a compressively strained photovoltaic device.
    Type: Application
    Filed: February 28, 2011
    Publication date: August 30, 2012
    Applicant: International Business Machines Corporation
    Inventors: Ahmed Abou-Kandil, Nasser Afify, Wanda Andreoni, Alessandro Curioni, Augustin J. Hong, Jeehwan Kim, Petr Khomyakov, Devendra K. Sadana