摘要:
The present inventive concept is a hyuntak transistor that can prevent a thermal runaway phenomenon and a low heat high efficiency constant current circuit using an auxiliary transistor capable of a high amplification and a constant current. The circuit may be applied to drive a LED and a motor.
摘要:
Provided are a 3-terminal MIT switch which can easily control a discontinuous MIT jump and does not need a conventional gate insulating layer, a switching system including the 3-terminal MIT switch, and a method of controlling an MIT of the 3-terminal MIT switch. The 3-terminal MIT switch includes a 2-terminal MIT device, which generates discontinuous MIT in a transition voltage, an inlet electrode and an outlet electrode, which are respectively connected to each terminal of the 2-terminal MIT device, and a control electrode, which is connected to the inlet electrode and includes an external terminal separated from an external terminal of the inlet electrode, wherein an MIT of the 2-terminal MIT device is controlled according to a voltage or a current applied to the control electrode. The switching system includes the 3-terminal MIT switch, a voltage source connected to the inlet electrode, and a control source connected to the control electrode.
摘要:
Provided is a field effect transistor including a graphene channel layer, and capable of increasing an on/off ratio of an operating current by using the graphene of the graphene channel layer. The field effect transistor includes: a substrate; the graphene channel layer which is disposed on a portion of the substrate and includes graphene; a first electrode disposed on a first region of the graphene channel layer and a portion of the substrate; an interlayer disposed on a second region of the graphene channel layer, which is apart from the first region, and a portion of the substrate; a second electrode disposed on the interlayer; a gate insulation layer disposed on a portion of the graphene channel layer, the first electrode, and the second electrode; and a gate electrode disposed on a portion of the gate insulation layer.
摘要:
Provided are a MIT device self-heating preventive-circuit that can solve a self-heating problem of a MIT device and a method of manufacturing a MIT device self-heating preventive-circuit integrated device. The MIT device self-heating preventive-circuit includes a MIT device that generates an abrupt MIT at a temperature equal to or greater than a critical temperature and is connected to a current driving device to control the flow of current in the current driving device, a transistor that is connected to the MIT device to control the self-heating of the MIT device after generating the MIT in the MIT device, and a resistor connected to the MIT device and the transistor.
摘要:
Provided are a circuit for continuously measuring a discontinuous metal-insulator transition (MIT) of an MIT element and an MIT sensor using the circuit. The circuit comprises a to-be-measured object unit including the MIT element having a discontinuous MIT occurring at the transition voltage thereof, a power supply unit applying a predetermined pulse current or voltage signal to the to-be-measured object unit, a measurement unit measuring the discontinuous MIT of the MIT element, and a microprocessor controlling the power supply unit and the measurement unit. The discontinuous MIT measurement circuit continuously measures the discontinuous MIT of the MIT element, and thus it can be used as a sensor for sensing a variation in an external factor.
摘要:
Provided is a 2-terminal semiconductor device that uses an abrupt MIT semiconductor material layer. The 2-terminal semiconductor device includes a first electrode layer, an abrupt MIT semiconductor organic or inorganic material layer having an energy gap less than 2eV and holes in a hole level disposed on the first electrode layer, and a second electrode layer disposed on the abrupt MIT semiconductor organic or inorganic material layer. An abrupt MIT is generated in the abrupt MIT semiconductor material layer by a field applied between the first electrode layer and the second electrode layer.
摘要:
Provided are a photo-induced metal-insulator-transition (MIT) material complex for a solar cell which can be used to manufacture highly efficient solar cells with more carriers than an impurity solar cell, and a solar cell including the MIT material complex, and a solar cell module. The solar cell includes: a substrate; a lower electrode formed on the substrate; a photo-induced MIT material complex formed on the lower electrode, wherein electrons and holes are formed when light is incident on n-type and p-type metal conductors that are bonded to each other, and the electrons and holes in an intrinsic energy level or gap become carriers, and a potential difference is generated; an anti-reflection layer formed on the MIT material complex; and an upper electrode that is formed to pass through the anti-reflection layer and to contact the MIT material complex. The n-type and p-type metal conductors are MIT materials which are insulators (or semiconductors) that have a metallic electronic structure at room temperature and also intrinsic energy levels, and an odd number of electrons or holes are in their outermost electron shell of the metallic electronic structure of the MIT materials. When an intrinsic energy level of the solar cell is broken, a greater number of carriers are induced than the number of carriers induced from an impurity level of a semiconductor. Accordingly, the solar cell has more carriers than carriers induced from an impurity level of a semiconductor solar cell.
摘要:
Provided is a logic circuit comprising a metal-insulator transition (MIT) device, including: an MIT device unit including an MIT thin film, an electrode thin film contacting the MIT thin film, and at least one MIT device undergoing a discontinuous MIT at a transition voltage VT; a power source unit including at least one power source applying power to the MIT device; and at least one resistor connected to the MIT device, wherein a logic operation is performed on a signal through the power source to output the result of the logic operation as an output signal.
摘要:
Provided are a temperature sensor using a metal-insulator transition (MIT) device subject to abrupt MIT at a specific temperature and an alarm including the temperature sensor. The abrupt MIT device includes an abrupt MIT thin film and at least two electrode thin films that contacts the abrupt MIT thin film. The abrupt MIT device generates abrupt metal-insulator transition at a specific transition temperature. The alarm includes a temperature sensor comprising an abrupt MIT device, and an alarm signaling device serially connected to the temperature sensor. Accordingly, the alarm can be manufactured to have a simple circuit and be of a small size by including the temperature sensor using an abrupt MIT device.
摘要:
Provided are an abrupt metal-insulator transition (MIT) device for bypassing super-high voltage noise to protect an electric and/or electronic system, such as, a high-voltage switch, from a super-high voltage, a high-voltage noise removing circuit for bypassing the super-high voltage noise using the abrupt MIT device, and an electric and/or electronic system including the high-voltage noise removing circuit. The abrupt MIT device includes a substrate, a first abrupt MIT structure, and a second abrupt MIT structure. The first and second abrupt MIT structures are formed on an upper surface and a lower surface, respectively, of the substrate. The high-voltage noise removing circuit includes an abrupt MIT device chain connected in parallel to the electric and/or electronic system to be protected. The abrupt MIT device chain includes at least two abrupt MIT devices serially connected to each other.