42results about How to "Good junction" patented technology

A photovoltaic device includes a substrate structure and a p-type semiconductor absorber layer, the substrate structure including a CdSSe layer. A photovoltaic device may alternatively include a CdSeTe layer. A process for manufacturing a photovoltaic device includes forming a CdSSe layer over a substrate by at least one of sputtering, evaporation deposition, CVD, chemical bath deposition process, and vapor transport deposition process. The process includes forming a p-type absorber layer above the CdSSe layer.

This invention relates to collet-type splices and collet-type dead ends and methods for splicing together two aluminum conductor composite core reinforced cables (ACCC) or terminating one ACCC cable. The collet-type fittings use a collet inside a collet housing to hold the composite cores. The composite cores can be stripped of the aluminum conductor to provide a bond between the collet and the composite core. After inserting the composite core into the collet, a compression implement compresses the collet. The collet holds the composite core with frictional forces and the collet further compresses and strengthens the hold on the composite core if the composite core pulls the collet further into the collet housing.

The invention discloses a geometrical variable flame stabilizing device and belongs to the technical field of afterburner flame stabilization of aircraft engines. The geometrical variable flame stabilizing device disclosed by the invention utilizes a V-shape as a basic bluff body structure and consists of a main body part and a transmission power part, wherein the main body part is vertically installed in an afterburner cartridge receiver, the afterburner cartridge receiver comprises a front streamline head part, a blade A with a rotating shaft A, a blade B with a rotating shaft B, a rotating shaft supporting plate and a mounting seat, and the two ends of the streamline head part are fixedly connected between the mounting seat and the rotating shaft supporting plate. The geometrical shape of the flame stabilizing device provided by the invention can be changed to effectively reduce the flow resistance of the flame stabilizing device if necessary, or the flow resistance is increased within a short time to improve the ignition success rate, or the geometrical shape of the flame stabilizing device is adjusted to consistently keep the flame stabilizing device at the optimal combination point of the flame stabilization and flow resistance loss so as to obtain the maximal thrust performance of the afterburner.

The invention discloses a rough vacuum vegetable fresh-preserving cold storage which comprises a storage body, a refrigerating unit, a temperature control system, a vacuum pressure and protection system, a repressuring door-opening system, a humidification system, a disinfecting and sterilizing system, an air exchange system and a PLC (Programmable Logic Controller) automatic control system. The temperature control system controls the operation of the refrigerating unit so that the fresh-preserving cold storage achieves a required environment, the vacuum pressure and protection system provides a required vacuum fresh-preserving environment for the fresh-preserving cold storage, and the repressuring door-opening system is used for pressure relief. The storage body, the refrigerating unit, the temperature control system, the vacuum pressure and protection system, the repressuring door-opening system, the humidification system, the disinfecting and sterilizing system and the air exchange system are all connected with the PLC automatic control system. After various parameters of a man-machine dialog interface of the PLC automatic control system are set, the storage body, the refrigerating unit, the temperature control system, the air exchange system and other parts operate automatically. The invention can increase and enhance the effect of low-temperature vegetable fresh preservation.

A hybrid growth method for III-nitride tunnel junction devices uses metal-organic chemical vapor deposition (MOCVD) to grow one or more light-emitting or light-absorbing structures and ammonia-assisted or plasma-assisted molecular beam epitaxy (MBE) to grow one or more tunnel junctions. Unlike p-type gallium nitride (p-GaN) grown by MOCVD, p-GaN grown by MBE is conductive as grown, which allows for its use in a tunnel junction. Moreover, the doping limits of MBE materials are higher than MOCVD materials. The tunnel junctions can be used to incorporate multiple active regions into a single device. In addition, n-type GaN (n-GaN) can be used as a current spreading layer on both sides of the device, eliminating the need for a transparent conductive oxide (TCO) layer or a silver (Au) mirror.

A tunnel junction device (102) with minimal hydrogen passivation of acceptors includes a p-type tunnel junction layer (106) of a first semiconductor material doped with carbon. The first semiconductor material includes aluminum, gallium, arsenic and antimony. An n-type tunnel junction layer (104) of a second semiconductor material includes indium, gallium, arsenic and one of aluminum and phosphorous. The junction between the p-type and an-type tunnel junction layers forms a tunnel junction (110).

In an integrated semiconductor optical device, a first cladding layer is made of a first conductivity type semiconductor. A first active layer for forming a first semiconductor optical device is provided on the first cladding layer in a first area of a principal surface of a substrate. A second active layer for forming a second semiconductor optical device is provided on the first cladding layer in a second area of the principal surface. A second cladding layer made of a second conductivity type semiconductor is provided on the second active layer. A third cladding layer made of a first conductivity type semiconductor is provided on the first active layer. A tunnel junction region is provided between the first active layer and the third cladding layer. The first active layer is coupled to the second active layer by butt joint. The second and third cladding layers form a p-n junction.

There is provided a semiconductor device including an ohmic junction layer which is excellent in surface flatness and uniformity of composition in an interface with a semiconductor substrate and thus can give a sufficiently high adhesiveness with a Schottky junction layer. Such a semiconductor device includes an n type SiC semiconductor substrate (1), a cathode electrode (5) that comes into ohmic contact with a main surface (1b) of one side of the SiC semiconductor substrate (1), a first semiconductor region (6a) that is made of p type SiC formed in a main surface (1a) of the other side of the SiC semiconductor substrate (1), a second semiconductor region (6b) that is made of an n type SiC formed in the main surface (1a) of the other side, an ohmic junction layer (7) that comes into ohmic contact with the first semiconductor region (1a), and a Schottky junction layer (8) that comes into Schottky contact with the second semiconductor region (6b), wherein a root mean square roughness for a surface of the ohmic junction layer (7) is 20 nm or less.

In the present radio frequency device, a radio frequency circuit part and a transmission line are disposed on the top surface of a circuit board on the surface of which a ground pattern is provided, and a metal shielding cap is fixed to the circuit board so as to cover the radio frequency circuit part and the transmission path. The metal shielding cap includes: a top plate disposed above the radio frequency circuit part and substantially parallel to the circuit board; a grounded side wall being provided so as to hang down from a part of an edge of the top plate, having a spring property and being joined to the ground pattern of the circuit board, and a side wall is open except for the grounded side wall.

A coiled mosquito-repellent paper incense is composed of two coiled flat and lender incense strips, and is made up of the basic material prepared from plant fibers, the powder of wooden (or bamboo) charcoal, and light calcium carbonate and/or kaolinite, and the mosquito-repellent liquid prepared from pyrethrins, octachorodipropyl ether and essence through spray said liquid onto the basic material.

An electrically conductive bit line layer is applied and patterned into portions arranged parallel to one another before the trench is etched into the semiconductor material, in which case, after the patterning of the bit line layer (3, 4) and before the etching of the trench, an implantation is introduced for the purpose of defining the position of the junctions, or, after the implantation of the n⁺-type well (19) for the source/drain regions, the bit line layer (3, 4) is patterned using an etching stop layer (2) arranged on the semiconductor body (1).

The invention relates to a calcium carbonate composite germicide and a preparation method thereof, and is characterized in that: a calcium carbonate nano-assembling ball material and nano liver are taken as the raw materials, proper amount of surfactant is added for being taken as a coupling agent and a dispersant, then the environment-protective nano composite germicide with high efficiency is prepared. By the synergy of the calcium carbonate nano material and the nano liver, the composite germicide not only can realize the greatly improved bactericidal potence of the nano liver and reduce the dosage of the nano liver and the consumption of the noble metal resource, but also can fully develop the advantages of the carbonate composite mineral resources in places such as ChiZhou of China and improve the added value of the carbonate composite mineral resources.

The invention provides a vegetable freshness retaining refrigerator wagon box. The vegetable freshness retaining refrigerator wagon box comprises a box body (1), two-dimensional code infrared scanning equipment, a refrigerating unit (4), a vacuum pressure device (5), a temperature control system, a pressure control system, a humidifying system, a sterilizing system, an air renewal system and a PLC automatic control system. A plurality of storage cases (3) are evenly arranged on the front face of the box body. Each storage case is provided with a cabinet door arranged on the front end face of the box body. Each cabinet door is provided with the infrared scanning equipment and an electronic lock. The refrigerating unit and the vacuum pressure device are arranged at the upper end of the box body. A thermal insulation layer (2) is arranged on an outer layer of the box body. The infrared scanning equipment and the electronic locks are connected with the PLC automatic control system.

The invention discloses a spinning speed regulating device of a roving machine and a regulating method. The spinning speed regulating device comprises an input unit, a model unit, a computing unit and an output unit, wherein the computing unit is used for computing the angular speed of a bobbin of the roving machine, the angular speed of a flyer of the roving machine and the spinning speed of the roving machine according to the model unit, so as to regulate the spinning speed of the roving machine. According to the spinning speed regulating method of the roving machine, which is disclosed by the invention, accurate mathematical models are taken as bases, and the best combination point of less roving bursting and the highest efficiency can be obtained under a given safety threshold value of roving bursting, so that the highest production efficiency of the machine can be obtained.

The invention relates to an adjusting and controlling device for application of prestress to steel supports for deep foundation pits. The device comprises a transmission part and a supporting part; the transmission part comprises a hand wheel, a connecting rod, a bottom bevel gear I, a transmission bevel gear I, a transmission rod, a transmission bevel gear II, a bottom bevel gear II, a screw rod, a lifting nut and a metal sleeve which are connected sequentially; the supporting part comprises a metal casing coating the transmission part as well as a bracket I and a bracket II which are hinged to the metal casing through a hinge piece I and a hinge piece II. The device is simple to operate, high in applicability, widely applicable to different models of steel support structures and capable of being reused. With the device, lower wedge iron can be effectively prevented from moving downwards along with upper wedge iron, and the stability of construction processes is guaranteed. Besides, accurate and fine adjustment of relative positions of the wedge iron to telescopic rods can be realized with the device, so that optimal combination points can be found, pressurization is more effective, and the pressurization working efficiency at loose ends of the steel supports can be remarkably improved.

The invention discloses self-walking polishing equipment, and belongs to the technical field of wall board prefabrication. The self-walking polishing equipment comprises a base, and is characterized in that a first slide frame capable of moving longitudinally is installed in the base, a second slide frame capable of moving horizontally is installed on the first slide frame, a universal joint is arranged in the second slide frame, a polishing machine is installed in the universal joint, a joystick capable of extending to the upper part of the second slide frame is fixed to the polishing machine, and the joystick can drive the polishing machine to rotate in the universal joint. The self-walking polishing equipment can drive the second slide frame to move in a two-dimensional plane through the friction force between the polishing machine and a wall board, so that the walking speed of the polishing machine adapts to the friction force, and the friction force is directly related to the polishing effect; when a better polishing effect is achieved, the walking speed of the polishing machine is obviously slowed down, the polishing quality is enabled to be controllable, a better combinationpoint of polishing efficiency and quality is achieved, the self-walking of the polishing machine is further realized, and the walking energy is saved.