公开(公告)号：US20150228917A1

公开(公告)日：2015-08-13

申请号：US14428398

申请日：2013-09-19

Applicant: NORTHEASTERN UNIVERSITY

Inventor： Yung Joon Jung ,  Swastik Kar ,  Young Lae Kim ,  Hyun Young Jung ,  Young Kyun Kwon

IPC: H01L51/42

CPC classification number: H01L51/4213 ,  B82Y20/00 ,  B82Y40/00 ,  H01L31/102 ,  H01L51/0048 ,  H01L2031/0344 ,  Y02E10/549 ,  Y10S977/75 ,  Y10S977/845 ,  Y10S977/954

Abstract: Heterojunctions of single-walled carbon nanotubes and p-doped silicon produce a photocurrent when irradiated with visible light under reverse bias conditions. In optoelectronic devices utilizing the heterojunctions, the output current can be controlled completely by both optical and electrical inputs. The heterojunctions provide a platform for heterogeneous optoelectronic logic elements with high voltage-switchable photocurrent, photo-voltage responsivity, electrical ON/OFF ratio, and optical ON/OFF ratio. The devices are combined to make switches, logic elements, and imaging sensors. An assembly of 250,000 sensor elements on a centimeter-scale wafer is also provided, with each sensor element having a heterojunction of single-walled carbon nanotubes and p-doped silicon, and producing a current dependent on both the optical and the electrical input.

Abstract translation: 单壁碳纳米管和p掺杂硅的杂质在反向偏压条件下用可见光照射时产生光电流。 在利用异质结的光电器件中，输出电流可以通过光输入和电输入完全控制。 异质结为具有高电压切换光电流，光电压响应度，电开/关比和光ON / OFF比的异质光电逻辑元件提供了一个平台。 这些器件被组合以制造开关，逻辑元件和成像传感器。 还提供了在厘米级晶片上的25万个传感器元件的组件，每个传感器元件具有单壁碳纳米管和p掺杂硅的异质结，并产生取决于光学和电气输入的电流。

公开(公告)号：US11372118B2

公开(公告)日：2022-06-28

申请号：US16331648

申请日：2017-09-11

Applicant: Northeastern University

Inventor： Ji Hao ,  Swastik Kar ,  Yung Joon Jung ,  Daniel Rubin

IPC: G01T1/24 ,  G01T1/185 ,  B82Y15/00 ,  H01J49/02 ,  H01J49/04 ,  C01B32/159 ,  C01B32/182 ,  C01B19/04

Abstract: Ultrasensitive, miniaturized, and inexpensive ion and ionizing radiation detection devices are provided. The devices include an insulating substrate, metallic contact pads disposed on a surface of the substrate, and a strip of an ultrathin two-dimensional material having a thickness of one or a few atomic layers. The strip is in contact with the contact pads, and a voltage is applied across the two-dimensional sensor material. Individual ions contacting the two-dimensional material alter the current flowing through the material and are detected. The devices can be used in a network of monitors for high energy ions and ionizing radiation.

公开(公告)号：US09840774B2

公开(公告)日：2017-12-12

申请号：US14410014

申请日：2013-06-24

Applicant: Northeastern University ,  Korea Research Institute of Chemical Technology

Inventor： Sanghyun Hong ,  Yung Joon Jung ,  Hyun Young Jung ,  Sung-Goo Lee ,  Youngjae Yoo

IPC: C23C16/24 ,  C23C16/455 ,  C23C16/22 ,  C23C16/46 ,  H01L21/02

CPC classification number: C23C16/455 ,  C23C16/22 ,  C23C16/46 ,  H01L21/02381 ,  H01L21/02532 ,  H01L21/02603 ,  H01L21/0262 ,  Y10T428/2933

Abstract: A simple, economical method of producing nanowire arrays is described. The method produces high density arrays having nanowires with diameters below 10 nm and does not require templating, catalysts, or surface pre/post-treatment. The disclosed methods and systems can be used, for example, for optoelectronic devices and photovoltaic cells, Li-ion batteries, chemical/bio sensors and transistors.

公开(公告)号：US12092773B2

公开(公告)日：2024-09-17

申请号：US18065344

申请日：2022-12-13

Applicant: Gangneung-Wonju National University Industry Academy Cooperation Group ,  Northeastern University ,  Seoul National University R&DB Foundation ,  The General Hospital Corporation

Inventor： Hyehee Kim ,  Yung Joon Jung ,  Hak Soo Choi ,  Young Lae Kim ,  Geehyun Kim

IPC: G01T1/185

CPC classification number: G01T1/185

Abstract: A radiation detection device includes a sensor having a first electrode and a second electrode. The first and second electrode each defines a plurality of fingers comprising a nanotube material, and the fingers of each electrode are interdigitated with one another. A voltage source may be configured to apply a voltage across the first and second electrodes. A chamber contains the sensor with a gas, one or more walls of the chamber enabling passage of radiation external to the chamber. A detection circuit detects radiation within the chamber based on a change in current across the first and second electrodes resulting from ionization of the gas by the radiation.

公开(公告)号：US11325343B2

公开(公告)日：2022-05-10

申请号：US16484024

申请日：2017-09-11

Applicant: Northeastern University

Inventor： Swastik Kar ,  Ji Hao ,  Daniel Rubin ,  Yung Joon Jung

IPC: B32B5/16 ,  C01B32/194 ,  H01L29/06 ,  B82Y30/00 ,  B82Y40/00

Abstract: Ion-doped two-dimensional nanomaterials are made by inducing electronic carriers (electrons and holes) in a two-dimensional material using a captured ion layer at the surface of the material. The captured ion layer is stabilized using a capping layer. The induction of electronic carriers works in atomically-thin two-dimensional materials, where it induces high carrier density of at least 1014 carriers/cm2. A variety of novel ion-doped nanomaterials and p-n junction-based nanoelectronic devices are made possible by the method.

公开(公告)号：US10036728B2

公开(公告)日：2018-07-31

申请号：US14441218

申请日：2013-11-12

Applicant: Northeastern University

Inventor： Bo Li ,  Ji Hao ,  Hyun Young Jung ,  Yung Joon Jung ,  Swastik Kar

IPC: G01N27/70 ,  G01N27/62 ,  H01J41/02 ,  H01J47/02 ,  H01J49/02

CPC classification number: G01N27/70 ,  G01N27/62 ,  H01J41/02 ,  H01J47/02 ,  H01J49/025

Abstract: An ion detection device has a strip of carbon-based nanomaterial (CNM) film and a chamber enclosing the CNM film. A low bias voltage is applied at the ends of the CNM film strip, and ions present in the chamber are detected by a change in the magnitude of current flowing through the CNM film under the bias. Also provided are methods for fabricating the device, methods for measuring pressure of a gas, and methods for monitoring or quantifying an ionizing radiation using the device.

公开(公告)号：US09881746B2

公开(公告)日：2018-01-30

申请号：US14391458

申请日：2013-04-15

Applicant: Northeastern University ,  William Marsh Rice University

Inventor： Yung Joon Jung ,  Hyun Young Jung ,  Pulickel M. Ajayan

IPC: H01G11/36 ,  H01G11/56 ,  H01G11/68 ,  H01G11/48 ,  H01G11/84

CPC classification number: H01G11/36 ,  H01G11/48 ,  H01G11/56 ,  H01G11/68 ,  H01G11/84 ,  Y02E60/13 ,  Y10T29/42

Abstract: Mechanically flexible and optically transparent thin film solid state supercapacitors are fabricated by assembling nano-engineered carbon electrodes in porous templates. The electrodes have textured graphitic surface films with a morphology of interconnected arrays of complex shapes and porosity. The graphitic films act as both electrode and current collector, and when integrated with solid polymer electrolyte function as thin film supercapacitors. The nanostructured electrode morphology and conformal electrolyte packaging provide enough energy and power density for electronic devices in addition to possessing excellent mechanical flexibility and optical transparency.

公开(公告)号：US10646846B2

公开(公告)日：2020-05-12

申请号：US15510789

申请日：2015-09-14

Applicant: Northeastern University ,  Massachusetts Institute of Technology

Inventor： Yung Joon Jung ,  Hyun Young Jung ,  Swastik Kar ,  Chi Won Ahn ,  Mildred Dresselhaus ,  Paulo Antonio Trindade Araujo

IPC: B01J19/08 ,  C01B32/16 ,  C01B32/168 ,  C01B32/18 ,  C01B32/184 ,  H01B1/04 ,  B82Y30/00 ,  B82Y40/00

Abstract: Inter-allotropic transformations of carbon are provided using moderate conditions including alternating voltage pulses and modest temperature elevation. By controlling the pulse magnitude, small-diameter single-walled carbon nanotubes are transformed into larger-diameter single-walled carbon nanotubes, multi-walled carbon nanotubes of different morphologies, and multi-layered graphene nanoribbons.

公开(公告)号：US20150332868A1

公开(公告)日：2015-11-19

申请号：US14391458

申请日：2013-04-15

Applicant: Northeastern University ,  William Marsh Rice University

Inventor： Yung Joon Jung ,  Hyun Young Jung ,  Pulickel M. Ajayan

IPC: H01G11/36 ,  H01G11/84 ,  H01G11/48 ,  H01G11/56 ,  H01G11/68

CPC classification number: H01G11/36 ,  H01G11/48 ,  H01G11/56 ,  H01G11/68 ,  H01G11/84 ,  Y02E60/13 ,  Y10T29/42

Abstract: Mechanically flexible and optically transparent thin film solid state supercapacitors are fabricated by assembling nano-engineered carbon electrodes in porous templates. The electrodes have textured graphitic surface films with a morphology of interconnected arrays of complex shapes and porosity. The graphitic films act as both electrode and current collector, and when integrated with solid polymer electrolyte function as thin film supercapacitors. The nanostructured electrode morphology and conform al electrolyte packaging provide enough energy and power density for electronic devices in addition to possessing excellent mechanical flexibility and optical transparency.

Abstract translation: 机械灵活和光学透明的薄膜固态超级电容器是通过将纳米工程碳电极组装在多孔模板中制造的。 电极具有纹理的石墨表面膜，具有复杂形状和孔隙率的互连阵列的形态。 石墨膜充当电极和集电器，并且当与固体聚合物电解质结合用作薄膜超级电容器时。 除具有优异的机械灵活性和光学透明性之外，纳米结构电极形态和符合电解质封装为电子器件提供了足够的能量和功率密度。