摘要:
A stacked semiconductor device has three-dimensional alternate layers of iconductor elements and insulating layers each electrically insulating the adjacent upper and lower layers of semiconductor elements, formed on a single crystal semiconductor substrate. A semiconductor is deposited in openings formed respectively in the insulating layers to form single crystal semiconductor layers each having the same crystal axis as the single crystal semiconductor substrate respectively over the insulating layers, and semiconductor elements are formed respectively in a plurality of layers. The opening formed through the upper insulating layer reaches the lower layer of the semiconductor element immediately below the same upper insulating layer, and is formed at a position spaced apart horizontally from the opening formed through the lower insulating layer immediately below the same upper insulating layer. A semiconductor for forming the upper layer of a semiconductor having the same crystal axis as the lower layer of a semiconductor is deposited in the opening of the upper insulating layer so that satisfactory lateral epitaxial growth will occur over the insulating layer.
摘要:
In a method of manufacturing a semiconductor device comprising melting an amorphous or polycrystalline first semiconductor layer formed on the surface of a first dielectric layer by irradiating energy rays thereon, and converting the same into single crystals by the subsequent lowering of the temperature and forming a second dielectric layer and a second semiconductor layer on the first semiconductor layer. Energy rays are irradiated under the condition capable of melting the first semiconductor layer through the second semiconductor layer and the second dielectric layer and, after the completion of the conversion into single crystals, the second semiconductor layer and the second dielectric layer are eliminated through etching.
摘要:
In a method for determining orientation of a crystal with polarization selective Raman microprobe spectroscopy, polarization angles of both light incident on the crystal and Raman scattered light emitted from the crystal are varied coincidently in ordinary circumstances and only either one of the polarization angles is varied in only case that intensity of the scattered beam does not change substantially in spite of the coincident variation of both the polarization angles.
摘要:
In a method of manufacturing a semiconductor device of a three-dimensional structure having a semiconductor substrate and another single crystal semiconductor layer formed thereon, the another single crystal semiconductor layer is prepared by melting a vapor-deposited amorphous or polycrystalline semiconductor layer by the energy of laser beams then solidifying and converting the layer into single crystals. For initiating the melting at selected regions of the layer, the layer is formed at the surface thereof with a silicon nitride film of a uniform thickness and a silicon nitride film with a thickness at the region corresponding to the selected region different from that of the remaining region. The region thicker or thinner than other region reflects the laser energy at different reflectivity thereby to provide a desired temperature distribution.
摘要:
A method for manufacturing a semiconductor device, which comprises: a first process for producing a semiconductor layer of polycrystalline silicon or amorphous silicon on the surface of a substrate of insulator or a substrate made up by forming an insulating layer on a basic semiconductor; a second process for producing an island of semiconductor layer surrounded by dielectric materials from the semiconductor layer; a third process for producing a film of Si.sub.3 N.sub.4 on the island of semiconductor layer, or on a film of SiO.sub.2 formed on the island; a fourth process for removing the film of Si.sub.3 N.sub.4 at a predetermined region on the island; and a fifth process for irradiating with scanning an energy beam to the island of semiconductor layer so as to melt and recrystallize the island, thereby monocrystallizing or increasing the size of crystal grains at at least a partial region thereof.
摘要翻译:一种半导体器件的制造方法,其特征在于,包括:通过在基础半导体上形成绝缘层而构成的绝缘体或基板的基板的表面上制造多晶硅或非晶硅的半导体层的第一工序; 用于制造由半导体层被电介质材料包围的半导体层的岛的第二工艺; 在半导体层的岛上或在岛上形成的SiO 2膜上制造Si 3 N 4的膜的第3工序; 在岛上的预定区域除去Si 3 N 4膜的第四工序; 以及将能量束扫描到半导体层的岛上以便使岛熔融并重结晶的第五种方法,从而在其至少部分区域上单晶化或增加晶粒的尺寸。
摘要:
A wafer structure for forming a semiconductor single crystal film comprises a semiconductor single crystal substrate, a plurality of recesses formed in a grooved shape to one main surface of the semiconductor single crystal substrate, insulation material embedded to the inside of these recesses, an insulation layer deposited over the insulation material and the semiconductor single crystal substrate and integrated with the insulation material and a polycrystalline or amorphous semiconductor layer to be recrystallized disposed over the insulation layer.A wafer structure with no or less grain boundaries can be obtained. Further, polycrystalline or amorphous semiconductor layer can be prevented from peeling off the substrate by the additional layering of a protecting insulation layer.
摘要:
A vertical MOS transistor having its channel length determined by the thickness of an insulating layer provided over a semiconductor substrate, rather than by the depth of a trench in which the transistor is formed. As a result, the characteristics of the transistor as relatively unaffected by doping and heat-treatment steps which are performed during formation. Also, the transistor may be formed so as to occupy very little surface area, making it suitable for application in high-density DRAMs. 0O048455372
摘要:
Disclosed herein is a process for producing a single crystal layer of a semiconductor device, which comprises the steps of providing an oxide insulator layer separated by an opening part for seeding, on a major surface of a single crystal semiconductor substrate of the cubic system, providing a polycrystalline or amorphous semiconductor layer on the entire surface of the insulator layer inclusive of the opening part, then providing a protective layer comprising at least a reflective or anti-reflection film comprising strips of a predetermined width, in a predetermined direction relative to the opening part and at a predetermined interval, the protective layer capable of controlling the temperature distributions in the semiconductor layer at the parts corresponding to the stripes or the parts not corresponding to the stripes, thereby completing a base for producing a semiconductor device, thereafter the surface of the base is irradiated with an energy beam through the striped reflective or anti-reflection film to melt the polycrystalline or amorphous semiconductor and scanning the energy beam in a predetermined direction such that the direction of the crystal of the semiconductor re-solidified and converted into a single crystal accords with a {111} plane, to produce the single crystal of the semiconductor device. Also disclosed is a semiconductor device produced by the method, which comprises a single crystal layer having a wide range of a crystal in a predetermined direction relative to the facial orientation of the major surface of the substrate, and has a three-dimensional semiconductor circuit element construction.
摘要:
A method of manufacturing a semiconductor crystalline layer comprising the following steps: a step of forming, on a single crystalline substrate composed of a semiconductor having a main face on face and having a diamond-type crystal structure, an orientation flat face in which the direction of the intersection with the main face makes a predetermined angle relative to the direction on the main face and which serves as a reference for defining the direction of arranging semiconductor chips formed on the substrate; a step of forming, on the main face of the substrate, an insulation layer at least a portion of which has an opening reaching the main face and which insulates the substrate at the region other than the opening; a step of forming a semiconductor layer composed of a polycrystalline or amorphous semiconductor on the surface of the opening and the insulation layer; a step of forming a reflectivity varying layer which is in the direction in parallel with or vertical to the intersection between the orientation flat face and the main face, has the width and the distance in a predetermined period and is set so as to show periodical reflectivity variation to the argon laser beams; and a step of scanning the argon laser beams under continuous irradiation by way of the reflectivity varying layer to the semiconductor layer in the direction identical with or at an angle within a certain permissible range to the direction of the main face or the direction equivalent thereto.
摘要:
Disclosed herein is a process for producing a single crystal layer of a semiconductor device, which comprises the steps of providing an oxide insulator layer separated by an opening part for seeding, on a major surface of a single crystal semiconductor substrate of the cubic system, providing a polycrystalline or amorphous semiconductor layer on the entire surface of the insulator layer inclusive of the opening part, then providing a protective layer comprising at least a reflective or anti-reflection film comprising stripes of a predetermined width, in a predetermined direction relative to the opening part and at a predetermined interval, the protective layer capable of controlling the temperature distributions in the semiconductor layer at the parts corresponding to the stripes or the parts not corresponding to the stripes, thereby completing a base for producing a semiconductor device, thereafter the surface of the base is irradiated with an energy beam through the striped reflective or anti-reflection film to melt the polycrystalline or amorphous semiconductor and scanning the energy beam in a predetermined direction such that the direction of the crystal of the semiconductor re-solidified and converted into a single crystal accords with a {111} plane, to produce the single crystal of the semiconductor device. Also disclosed is a semiconductor device produced by the method, which comprises a single crystal layer having a wide range of a crystal in a predetermined direction relative to the facial orientation of the major surface of the substrate, and has a three-dimensional semiconductor circuit element construction.