摘要:
There is provided a light emitting device and a process for producing the same in that the light emission efficiency is high, the range of selection of the material is broad, and a device array of a large area can be formed. On a substrate 11 comprising quartz glass, an n-type clad layer 12 comprising a non-single crystal body of n-type AlGaN, a light emitting layer 13 containing plural microcrystals 13a comprising ZnO, and a p-type clad layer 14 comprising a non-single crystal body of p-type BN are laminated in this order. Between the n-type clad layer 12 and the p-type clad layer 14, an insulating layer 15 is formed to fill the gap among the microcrystals 13a to prevent a leaking electric current. The insulating layer 15 is formed by oxidizing the surface of the n-type clad layer 12. Because the light emitting layer 13 contains the plural microcrystals 13a having an increased crystallinity, the light emission efficiency is increased, the range of selection of the materials of the light emitting layer 13, the n-type clad layer 12, the p-type clad layer 14 and the substrate 11 is broadened, and a device array of a large area can be formed.
摘要:
While a storage region 15 has of many dispersed particulates (dots) (15a), the surface density of the particulates (15a) is set to be higher than that of structural holes (pin holes) produced in a tunnel insulating film (14a), or the number of the particulates (15a) in the storage region (15) is set to five or more. While a conduction region (13c) is formed by a polysilicon layer (13) having a surface roughness of 0.1 nm to 100 nm, the number of the particulates (15a) in the storage region (15) is set to be larger than the number of crystal grains in the conduction region (13c). Even when a defect such as a pin hole occurs in the tunnel insulating film (14a) and charges stored in a part of the particulates are leaked, the charges stored in the particulates formed in a region where no defect occurs are not leaked. Thus, information can be held for a long time.
摘要:
A method of making a quantum interference semiconductor device comprising the steps of forming a first semiconductor layer on a semi-insulating semiconductor substrate, forming a semi-insulating second semiconductor layer on the first semiconductor layer, forming a metal film so as to form a gate electrode on the second semiconductor layer, forming a first opening by selectively removing the metal film to form the gate electrode, forming a mask on the first opening and etching until midway in the film thickness direction of the semi-insulative second semiconductor layer by anitropic etching through said first opening and subsequently forming an etching until an upper surface of the semiconductor substrate by isotropic etching occurs so as to form a second opening into the semi-insulative second semiconductor layer and the first semiconductor layer which is continuous with the first opening portion and forming a cathode from the first semiconductor layer and a blocker made of the second semiconductor layer.
摘要:
A method and apparatus for the combustion treatment of a toxic gas which forms microparticles by combustion are disclosed wherein the toxic gas is subjected to a combustion treatment in a specific combustion furnace where the combustion gas formed is brought into contact with an aqueous film flowing downwards on the inner wall of the furnace from the upper end portion thereof to the lower end portion thereof or with a cooled surface, and then optionally with aqueous droplets dispersed in the interior space of the furnace. The water captures the microparticles formed by combustion of the toxic gas and is discharged out of the furnace as a mixed flow with the combustion gas thus treated, and optionally the mixed flow is successively treated in a gas-liquid separator.
摘要:
A superconducting electron device is disclosed, in which a pair of parallel superconducting channels each having a Josephson junction therein are provided between source and drain electrodes, and a gate electrode is provided to apply a voltage to the channels to make potentials at each channels different to each other. The current flow through channels is controlled by the application of a voltage to the gate electrode based on electrostatic Aharanov-Bohm effect. The device uses the coherency characteristics of the superconducting material, thus high speed switching operation can be achieved.
摘要:
A semiconductor apparatus is disclosed, in which the entire or part of an electron active region is formed by a superlattice structure semiconductor layer in which a plurality of different semiconductor layers, less than 8 monolayers, and containing a fraction or a binary compound semiconductor layers are alternately and epitaxially grown and a main current direction is selected to be in the direction perpendicular to the laminae of said superlattice layers.
摘要:
Method for providing dielectric isolation of an epitaxial layer of a compound semiconductor or for providing separation and protection of pn-junction of a compound semiconductor by applying plasma oxidation.
摘要:
An image processing apparatus capable of extracting widely viewed features of an entire image and speedily performing image processing, and a method and an information recording medium for such processing. Image data of an original image is obtained by imaging the entire original image with an image pickup unit at a time. An amplitude distribution of a signal is obtained from the image data by fast Fourier transform performed by a fast Fourier transform section of a signal processing unit. An amplitude replacement section replaces the amplitude distribution with a predetermined function using the distance from a center of a frequency plane as a parameter. An inverse fast Fourier transform section forms an image corresponding to the original image by inverse fast Fourier transform from a phase distribution of points obtained by the fast Fourier transform and from an amplitude distribution obtained by the above-described replacement.
摘要:
A light emitting element having a semiconductor substrate having {100} crystal surface as a major surface, a light emitting element formed on the semiconductor substrate, a growth blocking layer formed on a resonator end face of the light emitting element, a regrown layer formed on the light emitting element, a reflection mirror opposed to the resonator end face, a first electrode in contact with said semiconductor substrate, and a second electrode formed on the regrown layer, in which the regrown layer is made of the same material as that of the reflection mirror and the reflection mirror is formed of a semiconductor formed of {110} crystal surface epitaxially grown.
摘要:
A fine pattern formation using an electron beam induced resist, and use of the resist in making semiconductor devices are disclosed. Collimated electron beam is irradiated and scanned along a desired pattern on a layer on which a resist layer of a desired pattern is deposited under an atmosphere containing a starting material layer for the resist. The resist thus deposited is partially removed by reactive ion etching to remove the skirt like portion of the resist layer, or totally removed by reactive ion etching during or after processing by using the resist layer as a processing mask. Since the resist layer width is determined by a diameter of the collimated electron beam, line width of less than hundred .ANG. can be directly drawn. There are also disclosed processes using the resist layer in manufacturing semiconductor devices.