摘要:
The semiconductor wafer includes: a base wafer; and an inhibition layer that is disposed on the base wafer as one piece or to be separate portions from each other, and inhibits growth of a crystal of a compound semiconductor, where the inhibition layer has a plurality of first opening regions that have a plurality of openings penetrating the inhibition layer and leading to the base wafer, each of the plurality of first opening regions includes therein a plurality of first openings disposed in the same arrangement, some of the plurality of first openings are first element forming openings each provided with a first compound semiconductor on which an electronic element is to be formed, and the other of the plurality of first openings are first dummy openings in which no electronic element is to be formed.
摘要:
Provided is a field-effect transistor including a gate insulating layer, a first semiconductor crystal layer in contact with the gate insulating layer, and a second semiconductor crystal layer lattice-matching or pseudo lattice-matching the first semiconductor crystal layer. Here, the gate insulating layer, the first semiconductor crystal layer, and the second semiconductor crystal layer are arranged in the order of the gate insulating layer, the first semiconductor crystal layer, and the second semiconductor crystal layer, the first semiconductor crystal layer is made of Inx1Ga1-x1Asy1P1-y1 (0
摘要翻译:提供了一种场效应晶体管,其包括栅极绝缘层,与栅极绝缘层接触的第一半导体晶体层和第二半导体晶体层与第一半导体晶体层的晶格匹配或伪晶格匹配。 这里,栅绝缘层,第一半导体晶体层和第二半导体晶体层按栅极绝缘层,第一半导体晶体层和第二半导体晶体层的顺序排列,第一半导体晶体层被制成 的In x Ga 1-x As y 1 P 1-y 1(0
摘要:
A high-quality GaAs-type crystal thin film using an inexpensive Si wafer with good thermal release characteristics is achieved. Provided is a semiconductor wafer comprising an Si wafer; an inhibiting layer that is formed on the wafer and that inhibits crystal growth, the inhibiting layer including a covering region that covers a portion of the wafer and an open region that does not cover a portion of the wafer within the covering region; a Ge layer that is crystal-grown in the open region; and a functional layer that is crystal-grown on the Ge layer. The Ge layer may be formed by annealing with a temperature and duration that enables movement of crystal defects, and the annealing is repeated a plurality of times.
摘要:
Provided is an optical device including a base wafer containing silicon, a plurality of seed crystals disposed on the base wafer, and a plurality of Group 3-5 compound semiconductors lattice-matching or pseudo lattice-matching the plurality of seed crystals. At least one of the Group 3-5 compound semiconductors has a photoelectric semiconductor formed therein, the photoelectric semiconductor including a light emitting semiconductor that emits light in response to a driving current supplied thereto or a light receiving semiconductor that generates a photocurrent in response to light applied thereto, and at least one of the plurality of Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor having the photoelectric semiconductor has a heterojunction transistor formed therein.
摘要:
To improve the flatness of the surface and improve the reliability of a semiconductor device when expitaxially growing semiconductor crystal layers of different types on a single silicon wafer, provided is a semiconductor wafer which includes: a base wafer having a silicon crystal in the surface thereof, the silicon crystal having a first dent and a second dent; a first Group IVB semiconductor crystal located in the first dent and exposed; a second Group IVB semiconductor crystal located in the second dent; and a Group III-V compound semiconductor crystal located above the second Group IVB semiconductor crystal in the second dent and exposed.
摘要:
The present invention provides a gallium nitride type epitaxial crystal, a method for producing the crystal, and a field effect transistor using the crystal. The gallium nitride type epitaxial crystal comprises a base substrate and the following (a) to (e), wherein a connection layer comprising a gallium nitride type crystal is arranged in an opening of the non-gallium nitride type insulating layer to electrically connect the first buffer layer and the p-conductive type semiconductor crystal layer. (a) a gate layer, (b) a high purity first buffer layer containing a channel layer contacting an interface on the base substrate side of the gate layer, (c) a second buffer layer arranged on the base substrate side of the first buffer layer, (d) a non-gallium nitride type insulating layer arranged on the base substrate side of the second buffer layer, and having the opening at a part thereof, and (e) a p-conductive type semiconductor crystal layer arranged on the base substrate side of the insulating layer.
摘要:
The present invention provides a method for producing polycrystalline silicon. The method for producing polycrystalline silicon comprises the steps of (A), (B), and (C), (A) reducing a chlorosilane represented by the formula (1) with a metal at a temperature T1 to obtain a silicon compound; SiHnCl4-n (1) wherein n is an integer of 0 to 3, (B) transferring the silicon compound to a zone having a temperature T2, wherein T1>T2; and (C) depositing polycrystalline silicon in the zone having a temperature T2, wherein the temperature T1 is not less than 1.29 times of a melting point (Kelvin unit) of the metal, and the temperature T2 is higher than a sublimation point or boiling point of the chloride of the metal.
摘要:
An electric device includes a plurality of circuits that operate in synchronization with a clock signal, a plurality of flip-flops each of which acquires a data value of a signal from a corresponding one of the plurality of circuits in synchronization with the clock signal and stores the acquired data value therein until receiving a next clock signal, where each flip-flop enters into a clock-disabled state, when receiving a signal at a disable terminal thereof, in which the acquired data value continues to be stored in the flip-flop, a timing controller that outputs a hold signal to the disable terminal of each flip-flop at a timing at which a corresponding circuit is desired to be diagnosed, and a plurality of diagnosis lines that are respectively provided in correspondence with the plurality of flip-flops, each diagnosis line outputting as diagnosis data a data value stored in a corresponding flip-flop.
摘要:
There is provided a semiconductor wafer including a base wafer, an insulating layer, and a Si crystal layer in the stated order. Here, the semiconductor wafer includes a seed crystal disposed on the Si crystal layer where the seed crystal has been subjected to annealing, and a compound semiconductor that has a lattice match or a pseudo lattice match with the seed crystal. There is provided an electronic device including a substrate, an insulating layer disposed on the substrate, a Si crystal layer disposed on the insulating layer, a seed crystal disposed on the Si crystal layer where the seed crystal has been subjected to annealing, a compound semiconductor that has a lattice match or a pseudo lattice match with the seed crystal, and a semiconductor device formed using the compound semiconductor.
摘要:
The present invention provides a method for manufacturing a gallium nitride semiconductor epitaxial crystal substrate with a dielectric film which has a low gate leak current and negligibly low gate lag, drain lag, and current collapse characteristics. The method for manufacturing a semiconductor epitaxial crystal substrate is a method for manufacturing a semiconductor epitaxial crystal substrate in which a dielectric layer of a nitride dielectric material or an oxide dielectric material in an amorphous form functioning as a passivation film or a gate insulator is provided on a surface of a nitride semiconductor crystal layer grown by metal organic chemical vapor deposition. In the method, after the nitride semiconductor crystal layer is grown in an epitaxial growth chamber, the dielectric layer is grown on the nitride semiconductor crystal layer in the epitaxial growth chamber.