Abstract:
PROBLEM TO BE SOLVED: To uniformize thickness and to stabilize reactivity by growing a PbS thin film by the atomic layer vapor deposition method or the chemical vapor deposition method, using an organic metal compound. SOLUTION: Regarding the method for manufacturing a PBX (X=S or Se) thin film, an organic metal compound containing Pb having a covalent binding with a working group is used as a Pb-precursor, and this precursor is reacted with H2X (X=S or Se), thereby forming a PBX thin film. Also, regarding the method for manufacturing a luminescent material formed out of a base material for accelerating electrons and a light emitting zone containing luminescent center ions, a base material growth and a light emitting zone growth are separated from each other, and many are alternately made to grow repeatedly. In this case, the growth is caused by adjusting ions to be present as the status of Pb2+dimer as the light emitting center ions. In addition, a luminescent material having very high color purity and brightness is manufactured by adding the Pb2+ions in a selective and specific state, regardless of the wide concentration range of Pb2.
Abstract:
A photo-gating switch system comprising a photosensitive device formed on a substrate is provided. The photosensitive device may comprise a photosensitive layer and electrodes formed at both ends of the photosensitive layer. A light source irradiating light to the photosensitive device is integrated beneath the surface of the substrate.
Abstract:
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.
Abstract:
Provided are a 3-terminal MIT switch which can easily control a discontinuous MIT jump and does not need a conventipnal 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 (200) and an outlet electrode (300), which are respectively connected to each terminal of the 2-terminal MIT device, and a control electrode (400), 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.
Abstract:
PURPOSE: A process for forming a PbX(X=S or Se) film using an atom layer deposition method and a chemical vapor deposition method and method for making a phosphor by adding PbX to the base material of CaS, CaSe, SrS, SrSe, ZnS, ZnSe, BaS, BaSe, MgS, and MgSe are provided which can produce the phosphor having good color intensity and luminance and reduce the cost of production. CONSTITUTION: In the manufacturing method of a PbX(X=S or Se) thin film, the film is formed by reacting a Pb-precursor and H2X(X=S or Se) using an organometal compound in which Pb is covalent-bonded with a functional group at 100-450°C. The product exhibits a luminance value of above 100 cd/m¬2 at AC-60 Hz. The phosphor having good color intensity and luminance is manufactured by adding a Pb ¬2+ ion to the base material selectively. The process can obtain excellent characteristics in reproducibility and uniformity and reduce the cost of production.
Abstract:
Provided are a method and circuit for controlling heat generation of a power transistor, in which the power transistor can be protected by preventing heat generation of the power transistor by using a metal-insulator transition (MIT) device that can function as a fuse and can be semi-permanently used. The circuit for controlling heat generation of a transistor includes a metal-insulator transition (MIT) device in which abrupt MIT occurs at a predetermined critical temperature; and a power transistor connected to a driving device and controlling power-supply to the driving device, wherein the MIT device is attached to a surface or heating portion of the transistor and is connected to a base terminal or gate terminal of the transistor or a surrounding circuit from a circuit point of view, and wherein when a temperature of the transistor increases to a temperature equal to or greater than the predetermined critical temperature, the MIT device reduces or shuts off a current of the transistor so as to prevent heat generation of the transistor.
Abstract:
Provided are a high current control circuit including a metal-insulator transition (MIT) device (100) and a system including the high current control circuit so that a high current can be controlled and switched by the small-size high current control citcuit, and a heat generation problem can be solved. The high current control circuit includes the MIT device connected in a current driving device (500) and undergoing an abrupt MIT at a predetermined transition voltage; and a switching control transistor (400) connected between the current driving device and the MIT device and controlling on-off switching of the MIT device. By including the metal-insulator transition (MlT) device, the high current control circuit switches a high current that is input to or output from the current driving device. Also, the MIT device constitutes a MIT-TR composite device (1000) with a heat-preventing transistor (200) which prevents heat generation and is connected on the MIT device.
Abstract:
Provided are a MIT device self-heating preventive-circuit that can solve a self-heating problem of a MIT device (100) 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 (100) that generates an abrupt MIT at a temperature equa to or greater than a critical temperature and is connected to a current driving device (500) to control the flow of current driving device, a transistor (200) that is connected to the MIT device (100) to control the self-heating of the MIT device after generating the MIT in the MIT device and a resistor (300) connected to the MIT device and the transistor.
Abstract:
Bereitgestellt werden Dünnschichtsolarzellen und Verfahren zur Herstellung derselben. Die Solarzelle kann ein Substrat und eine Zelle, umfassend eine amorphe Schicht mit einem kontinuierlich abgestuften Wasserstoffgehalt, angeordnet auf dem Substrat, einen n-Halbleiter, eine p-Halbleiterschicht, eine Metallelektrode angrenzend an den n-Halbleiter, und eine transparente Elektrode angrenzend an die p-Halbleiterschicht umfassen. Der Wasserstoffgehalt der amorphen intrinsischen Halbleiterschicht nimmt auf eine kontinuierliche Art und Weise von einer ersten Kontaktfläche, auf die Licht einfällt, zu einer zweiten Kontaktfläche gegenüber der ersten Kontaktfläche ab, und die ersten und zweiten Kontaktflächen sind gegenüberliegende Oberflächen der amorphen intrinsischen Halbleiterschicht, die in Kontakt mit der p- bzw. n-Halbleiterschicht sind.