摘要:
There is provided a method of manufacturing a semiconductor light emitting device, the method including: sequentially growing a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer on a semiconductor growth substrate to form a light emitting part; forming a support part on the second conductivity type semiconductor layer to be coupled to the light emitting part; separating the semiconductor growth substrate from the light emitting part; and applying an etching gas to the semiconductor growth substrate to remove a residue of the first conductivity type semiconductor layer from a surface of the semiconductor growth substrate.
摘要:
A method of growing a semiconductor epitaxial thin film and a method of fabricating a semiconductor light emitting device using the same are provided. The method of growing a semiconductor epitaxial thin film, includes: disposing a plurality of wafers loaded in a wafer holder in a reaction chamber; and jetting a reactive gas including a chlorine organic metal compound to the wafers through a gas supply unit provided to extend in a direction in which the wafers are loaded, to grow a semiconductor epitaxial thin film on a surface of each of the wafers.
摘要:
A superconducting rotating machine having a cooler for a rotator is provided. The superconducting rotating machine includes a rotator wound with a superconducting coil, a stator enclosing the rotator and separated therefrom by a predetermined gap, the cooler having a cold head directly attached to the rotator and at least one compressor connected with the cold head, and a flexible coupling disposed between the cold head and the compressor and enabling a cryogenic refrigerant to flow therein. The cold head is directly connected to the rotator, and the cold head and the compressor are driven using the flexible coupling, so that it is possible to prevent vibration of the compressor and enhance cooling efficiency by thermally separating the cryogenic cold head from the compressor.
摘要:
Disclosed is a solar cell and a method for manufacturing the same, which facilitates to improve cell efficiency by smoothly drifting carrier such as hole or electron generated in a semiconductor wafer to first and second electrodes, the solar cell comprising a semiconductor wafer having a predetermined polarity; a first semiconductor layer on one surface of the semiconductor wafer; a first transparent conductive layer on the first semiconductor layer; a first electrode on the first transparent conductive layer; a second semiconductor layer on the other surface of the semiconductor wafer, wherein the second semiconductor layer is different in polarity from the first semiconductor layer; a second transparent conductive layer on the second semiconductor layer; a second electrode on the second transparent conductive layer; and at least one of first and second auxiliary layers, wherein the first auxiliary layer is formed between the first semiconductor layer and the first transparent conductive layer so as to smoothly drift carriers generated in the semiconductor wafer to the first transparent conductive layer, and the second auxiliary layer is formed between the second semiconductor layer and the second transparent conductive layer so as to smoothly drift carriers generated in the semiconductor wafer to the second transparent conductive layer.
摘要:
Disclosed is a cooling fluid path structure for a superconducting rotating machine, which includes: a fixed inlet fluid path fixed together with the fluid supply means; a rotating inlet fluid path adjacently connected to an outlet of the fixed inlet fluid path, which is for transferring the cooling fluid transferred from the fixed inlet fluid path to a cooling fluid path inlet provided in the rotor while rotating together with the rotor; a rotating outlet fluid path rotating together with the rotor, to which the cooling fluid discharged from a cooling fluid path outlet of the rotor is transferred; and a fixed outlet fluid path adjacently connected to the rotating outlet fluid path, which is for transferring the cooling fluid transferred from the rotating outlet fluid path to the fluid supply means while being fixed together with the fluid supply means, wherein the rotating outlet fluid path and the fixed outlet fluid path are disposed in such a manner that they surround outside of the rotating inlet fluid path and the fixed inlet fluid path.
摘要:
An LCD device having improved reliability is disclosed.The LCD device includes an LCD panel comprising a plurality of gate lines and a plurality of data lines crossing the plurality of gate lines, a bottom cover disposed under the LCD panel, a top case encompassing an edge portion of an upper surface of the LCD panel and coupled to the bottom cover, a control PCB disposed on a lower surface of the bottom cover, a data driving PCB disposed at a side of the LCD panel and supplying a data signal to the plurality of data lines, a plurality of chip-on-films (COFs) connected the data driving PCB and the LCD panel, a plurality of flexible flat cables (FFCs) connected the data driving PCB and the control PCB, and a protection tape in which an adhesive material is coated on a surface other than areas corresponding to the FFCs and a plurality of grooves corresponding to the FFCs are formed at a side of the protection tape.
摘要:
Provided is a high-temperature fuel cell separator. The fuel cell separator includes a fuel gas flow path containing hydrogen, an oxidant gas flow path containing mainly an oxygen component being supplied from an oxygen/nitrogen separator of a system and participating in electrochemical reactions, and a cooling gas flow path containing a nitrogen component to remove heat produced upon power generation of a fuel cell. Such a configuration provides a high-temperature fuel cell separator which is capable of improving efficiency of an overall fuel cell system through improved performance of a fuel cell stack due to increased oxygen partial pressure and which is also capable of improving reliability of the fuel cell stack through inhibition of the occurrence of a high-temperature region resulting from heat produced upon power generation of a fuel cell, by means of a flow of cooling gas containing a nitrogen component.
摘要:
A pump for supplying a cryogenic liquid coolant in accordance with the present invention includes: a housing having an inlet port for introducing a cryogenic liquid coolant, an outlet port for discharging the cryogenic liquid coolant introduced through the inlet port, and a chamber for connecting the inlet port and the outlet port; an impeller rotatably retained in the housing for introducing the cryogenic liquid coolant through the inlet port and discharging the same through the outlet port; and a vapor exhausting part provided in the housing for exhausting vapor generated from the cryogenic liquid coolant.
摘要:
Provided are polycarbosilane and a method of producing the same. The polycarbosilane contains an allyl group, and thus can be cured by UV absorption when not exposed to the air.
摘要:
Disclosed is a wafer type solar cell and a method for manufacturing the same, which facilitates to enhance hole-collecting efficiency, and to improve cell efficiency by preventing transmittance of solar ray from being lowered, the wafer type solar cell comprising a first semiconductor layer of a semiconductor wafer; a second semiconductor layer doped with P-type dopant, wherein the second semiconductor layer is formed on one surface of the first semiconductor layer, on which solar ray is incident; a third semiconductor layer doped with N-type dopant, wherein the third semiconductor layer is formed on the other surface of the first semiconductor layer; a first passivation layer on the second semiconductor layer; a second passivation layer on the third semiconductor layer; a first electrode connected with the second semiconductor layer; and a second electrode connected with the third semiconductor layer.