Abstract:
The invention includes a semiconductor construction wherein gate structures are separated by isolation regions that are provided with an indium-doped pocket and a covering gate. The invention also includes a semiconductor construction having a pair of channel regions that have sub-regions doped with indium and surrounded by boron. A pair of transistor constructions are located over the channel regions and are separated by an isolation region. The transistors have gates that are wider than the underlying sub-regions. The invention also includes a semiconductor construction that has transistor constructions with insulative spacers along gate sidewalls. Each transistor construction is between a pair source/drain regions that extend beneath the spacers. A source/drain extension extends the source/drain region farther beneath the transistor constructions on only one side of each of the transistor constructions. The invention also includes methods of forming semiconductor constructions.
Abstract:
A method of processing a semiconductor device shapes a layer buried within a substrate of the semiconductor device. This layer has a conductivity the same as that of the substrate but has a higher doping level. In this process, a region of the layer is selected and ions of an opposite conductivity to the selected layer are counter-implanted in the region so that the doping level is substantially canceled. A region of the layer adjacent to the counter-implanted region retains a higher doping level. Alternative techniques are employed to protect the doped region against the counter-implant. In a first approach, the layer is doped and subsequently a mask is formed on the surface of the substrate. The mask is furnished by a part of the semiconductor device, such as a spacer which is connected to the gate electrode after the dopant layer is formed in the substrate. After the mask is formed, ions are counter-implanted with the mask protecting the doped region. In a second approach, both the ion implant forming the doped layer and the counter-implant are performed after masking structures are formed, however the ion implant is a large-angle implant which implants ions beneath the masking structure while the counter-implant is a perpendicular implant so that regions beneath the masking structure are protected from cancellation.
Abstract:
The invention includes a semiconductor construction having a pair of channel regions that have sub-regions doped with indium and surrounded by boron. A pair of transistor constructions are located over the channel regions and are separated by an isolation region. The transistors have gates that are wider than the underlying sub-regions. The invention also includes a semiconductor construction that has transistor constructions with insulative spacers along gate sidewalls. Each transistor construction is between a pair source/drain regions that extend beneath the spacers. A source/drain extension extends the source/drain region farther beneath the transistor constructions on only one side of each of the transistor constructions. The invention also includes methods of forming semiconductor constructions.
Abstract:
A method for producing MOS transistors of the type having shallow, lightly doped, source/drain structure. In this method sidewall fillets (7) of n-type doped dielectric material are defined adjacent to the sides of the oxide (1) and metal electrode (3) features. These fillets (7) are then employed to provide self aligned masking during implantation of heavy dopant of either n- or p-type (9; 13). In a subsequent rapid anneal step, the implant dopant is activated and n-type dopant diffused into the substrate (5) from the fillets (7) to provide lightly doped source/drain structures (11; 15). Examples of this method are described for producing phosphorous-arsenic n /n and phosphorus-boron p /p source/drain structures.
Abstract translation:一种用于制造具有浅的,轻掺杂的源极/漏极结构的类型的MOS晶体管的方法。 在该方法中,n型掺杂电介质材料的侧壁片(7)与氧化物(1)和金属电极(3)的侧面相邻地限定。 然后使用这些圆角(7)在植入n型或p型(9; 13)的重掺杂物期间提供自对准掩蔽。 在随后的快速退火步骤中,注入掺杂剂被激活,并且n型掺杂剂从焊脚(7)扩散到衬底(5)中以提供轻掺杂的源/漏结构(11; 15)。 描述了用于产生磷 - 砷/ n +和磷 - 硼p - / p +源/漏结构的该方法的实例。
Abstract:
The method disclosed comprises the epitaxing of a layer (4) of p doped InP and a layer (6) of Ga0.47In0.53As non intentionally doped on a semi-insolating substrate (2) of InP, and hydrogenating the InP layer by subjecting the assembly to a hydrogen plasma (8) having a power density smaller than 0.07 W/cm or at the most equal to 250 DEG C.
Abstract translation:所公开的方法包括:在InP的半剥离衬底(2)上有意掺杂的p掺杂InP的层(4)和GaI.47In0.53As(6)的表层,并且通过使InP层 组装到功率密度小于0.07W / cm 2或至多等于250℃的氢等离子体(8)
Abstract:
In semiconductor devices of extremely small dimensions, the problem of shorting together of adjacent, differently doped regions (12, 14) by a contact layer deposited through a window (17) which, owing to the smallness of the region dimensions, unavoidably exposes a surface portion of the adjacent region (12) not intended to be contacted, is solved by the use of a transfer layer (18) deposited first in the window which, upon heating, transfers impurities from the region (14) intended to be contacted to the unintentionally exposed portion of the adjacent region (12). The transferred impurities convert the exposed portion of the adjacent region to the same conductivity type as the impurity source region (14), thereby preventing shorting together of the contacted region (14) with the remaining, unconverted portion of the adjacent region.
Abstract:
The invention includes a semiconductor construction wherein gate structures are separated by isolation regions that are provided with an indium-doped pocket and a covering gate. The invention also includes a semiconductor construction having a pair of channel regions that have sub-regions doped with indium and surrounded by boron. A pair of transistor constructions are located over the channel regions and are separated by an isolation region. The transistors have gates that are wider than the underlying sub-regions. The invention also includes a semiconductor construction that has transistor constructions with insulative spacers along gate sidewalls. Each transistor construction is between a pair source/drain regions that extend beneath the spacers. A source/drain extension extends the source/drain region farther beneath the transistor constructions on only one side of each of the transistor constructions. The invention also includes methods of forming semiconductor constructions.
Abstract:
A thin film photovoltaic device is described, having a glass substrate 11 over which is formed a thin film silicon device having an n layer 12, a p layer 13 and a dielectric layer 14 (typically silicon oxide or silicon nitride). To create a connection through the p layer 13 to the underlying n layer 12, a column of semi-conductor material is heated, the column passing through the various doped layers and the material in the column being heated or melted to allow migration of dopant between layers of the device in the region of the column.
Abstract:
An epitaxial layer with a doping of approximately 10 atoms per cm is used in accordance with the resurf condition for the high-voltage circuit element in high-voltage integrated circuits of the resurf type. If the circuit comprises a zone which is provided in the epitaxial layer, which is of the same conductivity type as the substrate, and to which a high voltage is applied, the doping between this zone and the substrate must in addition be sufficiently high for preventing punch-through between the zone and the substrate. A known method of complying with these two requirements is to make the epitaxial layer very thick. It is found in practice, however, that this method is often not very well reproducible. According to the invention, the epitaxial layer is provided in the form of a high-ohmic layer which is doped from the upper side (3a) and from a buried layer (3b). The buried layer is blanket-deposited, which dispenses with a masking step, and is locally redoped by the island insulation zone (4).