公开(公告)号：US11508869B2

公开(公告)日：2022-11-22

申请号：US16986758

申请日：2020-08-06

Applicant: Ohio State Innovation Foundation

Inventor： Sanjay Krishna ,  Sri Harsha Kodati ,  Theodore Ronningen ,  Seunghyun Lee

IPC: H01L31/102 ,  H01L31/109 ,  H01L31/11

Abstract: A lateral interband Type II engineered (LITE) detector is provided. LITE detectors use engineered heterostructures to spatially separate electrons and holes into separate layers. The device may have two configurations, a positive intrinsic (PIN) configuration and a BJT (Bipolar junction transistor) configuration. The PIN configuration may have a wide bandgap (WBG) layer that transports the holes above a narrow bandgap (NBG) absorber layer that absorbs the target radiation and transports the electrons. The BJT configuration may have a WBG layer operating as a BJT above an NBG layer. In both configurations, the LITE design uses a Type II staggered offset between the NBG layers and the WBG layers that provides a built-in field for the holes to drift from an absorber region to a transporter region.

公开(公告)号：US20210043791A1

公开(公告)日：2021-02-11

申请号：US16986758

申请日：2020-08-06

Applicant: Ohio State Innovation Foundation

Inventor： Sanjay Krishna ,  Sri Harsha Kodati ,  Theodore Ronningen ,  Seunghyun Lee

IPC: H01L31/109 ,  H01L31/11

Abstract: A lateral interband Type II engineered (LITE) detector is provided. LITE detectors use engineered heterostructures to spatially separate electrons and holes into separate layers. The device may have two configurations, a positive intrinsic (PIN) configuration and a BJT (Bipolar junction transistor) configuration. The PIN configuration may have a wide bandgap (WBG) layer that transports the holes above a narrow bandgap (NBG) absorber layer that absorbs the target radiation and transports the electrons. The BJT configuration may have a WBG layer operating as a BJT above an NBG layer. In both configurations, the LITE design uses a Type II staggered offset between the NBG layers and the WBG layers that provides a built-in field for the holes to drift from an absorber region to a transporter region.

公开(公告)号：US11976972B2

公开(公告)日：2024-05-07

申请号：US17612634

申请日：2020-05-21

Applicant: Ohio State Innovation Foundation

Inventor： Luis Rodriguez-Saona ,  Christopher Ball ,  Xin Rong Sia ,  Sanjay Krishna ,  Theodore James Ronningen

IPC: G01J3/02 ,  G01J3/44 ,  G01N21/3563 ,  G01N21/359 ,  G01N33/02

CPC classification number: G01J3/0272 ,  G01J3/0256 ,  G01J3/0264 ,  G01J3/44 ,  G01N21/3563 ,  G01N21/359 ,  G01N33/02

Abstract: Disclosed herein are systems and devices for use in determining a level of a trait in an agriculture or food product sample. Further disclosed is a portable spectrometer system coupled with chemometric analysis methods to determine a level of a trait in an agriculture or food product sample, the portable spectrometer system comprising: a spectrometer; a sample stage adjacent the spectrometer; a motor coupled to the sample stage; and a system housing enclosing the motor and the spectrometer; wherein rotation of the motor rotates the sample stage, and wherein the motor is controllable in response to spectroscopy requirements.

公开(公告)号：US20210375957A1

公开(公告)日：2021-12-02

申请号：US16769693

申请日：2018-12-05

Applicant: OHIO STATE INNOVATION FOUNDATION

Inventor： Sanjay Krishna ,  Earl Fuller ,  Waleed Khalil ,  Theodore RONNINGEN ,  Alireza Kazemi ,  Dale Shane Smith ,  Teressa Specht ,  Ramy Tantawy

IPC: H01L27/142 ,  H01L27/146 ,  H01L31/103 ,  H01L31/108 ,  H03K17/785

Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.

公开(公告)号：US20240035961A1

公开(公告)日：2024-02-01

申请号：US18362430

申请日：2023-07-31

Applicant: Ohio State Innovation Foundation

Inventor： Christopher Ball ,  Theodore Ronningen ,  Douglas Fink ,  Brett Ringel ,  Sanjay Krishna ,  Earl Fuller ,  Douglas Mooney

IPC: G01N21/3504

CPC classification number: G01N21/3504

Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than concentration-path length product CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible. Fully characterized real time image of a methane cloud offers operational advantages in accuracy and safety as compared to current sensors.

公开(公告)号：US11714046B2

公开(公告)日：2023-08-01

申请号：US16840941

申请日：2020-04-06

Applicant: Ohio State Innovation Foundation

Inventor： Christopher Ball ,  Theodore Ronningen ,  Douglas Fink ,  Brett Ringel ,  Sanjay Krishna ,  Earl Fuller ,  Douglas Mooney

IPC: G01N21/3504

CPC classification number: G01N21/3504

Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than concentration-path length product CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible. Fully characterized real time image of a methane cloud offers operational advantages in accuracy and safety as compared to current sensors.

公开(公告)号：US11552204B2

公开(公告)日：2023-01-10

申请号：US16780821

申请日：2020-02-03

Applicant: Ohio State Innovation Foundation ,  THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Sanjay Krishna ,  Anthony Grbic ,  Christopher Ball ,  Theodore Ronningen ,  Alireza Kazemi ,  Mohammadamin Ranjbaraskari ,  Qingyuan Shu

IPC: H01L31/0232 ,  H01P7/10 ,  H01L31/0304 ,  H01L31/109 ,  H01L27/144 ,  H01L31/105 ,  H01L31/18 ,  H01L31/0216 ,  H01L31/0224

Abstract: An apparatus for light detection includes a light, or photon, detector assembly and a dielectric resonator layer coupled to the detector assembly. The dielectric resonator layer is configured to receive transmission of incident light that is directed into the detector assembly by the dielectric resonator layer. The dielectric resonator layer resonates with a range of wavelengths of the incident light.

公开(公告)号：US11521994B2

公开(公告)日：2022-12-06

申请号：US16769693

申请日：2018-12-05

Applicant: OHIO STATE INNOVATION FOUNDATION

Inventor： Sanjay Krishna ,  Earl Fuller ,  Waleed Khalil ,  Theodore Ronningen ,  Alireza Kazemi ,  Dale Shane Smith ,  Teressa Specht ,  Ramy Tantawy

IPC: H01L27/146 ,  H01L27/142 ,  H01L31/103 ,  H01L31/108 ,  H03K17/785

Abstract: An open circuit voltage photodetector comprises a photovoltaic device including a photovoltaic junction, and a transistor. The photovoltaic device is connected to the gate terminal of the transistor to input an open circuit voltage of the photovoltaic device to the gate terminal. An array of such photodetectors and a readout integrated circuit forms an image sensor. In a photodetection method, an open circuit voltage is generated in a photovoltaic device in response to illumination by incident radiation, and the open circuit voltage is applied to a gate terminal of a transistor to modulate a channel current flowing in a channel of the transistor. A readout electronic circuit may be fabricated with an extra transistor, and a photovoltaic device disposed on the readout electronic circuit and electrically connected to apply an open circuit voltage of the photovoltaic device to a gate of the extra transistor.

公开(公告)号：US20200319096A1

公开(公告)日：2020-10-08

申请号：US16840941

申请日：2020-04-06

Applicant: Ohio State Innovation Foundation

Inventor： Christopher Ball ,  Theodore Ronningen ,  Douglas Fink ,  Brett Ringel ,  Sanjay Krishna ,  Earl Fuller ,  Douglas Mooney

IPC: G01N21/3504

Abstract: A system and method indicate capability for detecting methane leaks inside buildings. This approach provides the ability to detect methane behind high efficiency coated windows and can extract methane concentration (rather than CL). Lock-in imaging technologies can facilitate lower laser transmitter power. A field deployable, hand held prototype sensor for use in remote sensing a appropriate standoff distances can support operational testing. Distance infrared imaging of methane is feasible. Fully characterized real time image of a methane cloud offers operational advantages in accuracy and safety as compared to current sensors

公开(公告)号：US20200321481A1

公开(公告)日：2020-10-08

申请号：US16780821

申请日：2020-02-03

Applicant: Ohio State Innovation Foundation ,  THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Sanjay Krishna ,  Anthony Grbic ,  Christopher Ball ,  Theodore Ronningen ,  Alireza Kazemi ,  Amin Ranjbar ,  Qingyuan Shu

IPC: H01L31/0232 ,  H01P7/10 ,  H01L31/0304 ,  H01L31/109 ,  H01L31/0224 ,  H01L31/105 ,  H01L31/18 ,  H01L31/0216 ,  H01L27/144

Abstract: An apparatus for light detection includes a light, or photon, detector assembly and a dielectric resonator layer coupled to the detector assembly. The dielectric resonator layer is configured to receive transmission of incident light that is directed into the detector assembly by the dielectric resonator layer. The dielectric resonator layer resonates with a range of wavelengths of the incident light.