摘要:
The invention suggests a transistor (21) comprising a source (24) and a drain (29) as well as a barrier region (27) located between the source and the drain. The barrier region is separated from the source and the drain by intrinsic or lowly doped regions (26, 28) of a semiconductor material. Potential barriers are formed at the interfaces of the barrier region and the intrinsic or lowly doped regions. A gate electrode (32) is provided in the vicinity of the potential barriers such that the effective height and/or width of the potential barriers can be modulated by applying an appropriate voltage to the gate electrode.
摘要:
An electronic component (100), a first electrode (101), a second electrode (102), and a convertible structure (103) electrically coupled between the first electrode (101) and the second electrode (102), being convertible between at least two states by heating and having different electrical properties in different ones of the at least two states, wherein the convertible structure (103) comprises terminal portions (104, 105) connected to the first electrode (101) and to the second electrode (102), respectively, and comprises a line portion (106) between the terminal portions (104, 105), the line portion (106) having a smaller width or thickness than the terminal portions (104, 105), and wherein the convertible structure (103) is arranged with respect to the first electrode (101) and the second electrode (102) so that, in one of the at least two states, the line portion (106) has an amorphous ‘Spot (107) extending along only a part of the line portion (106).
摘要:
The invention relates to a method of manufacturing a semiconductor device with a substrate and a semiconductor body, whereby in the semiconductor body a semiconductor element is formed by means of a mesa-shaped protrusion of the semiconductor body, which is formed on the surface of the semiconductor device as a nano wire, whereupon a layer of a material is deposited over the semiconductor body and the resulting structure is subsequently planarized in a chemical-mechanical polishing process such that an upper side of the nano wire becomes exposed. According to the invention, a further layer of a further material is deposited over the semiconductor body with the nano wire before the layer of the material is deposited, which further layer is given a thickness smaller than the height of the nano wire, and a material is chosen for the further material such that, viewed in projection, the transition between the layer and the further layer is discernible before the nano wire is reached. In this way the nano wire can be exposed more accurately in the device. This increases the yield of useful devices.
摘要:
The invention relates to a semiconductor device (10) with a semiconductor body (12) comprising a bipolar transistor with an emitter region, a base region and a collector region (1, 2, 3) of, respectively, a first conductivity type, a second conductivity type opposite to the first conductivity type, and the first conductivity type. One of the emitter or collector regions (1, 3) comprises a nanowire (30). The base region (2) has been formed from a layer (20) at the surface of the semiconductor body (12); the other one (3, 1) of the emitter or collector regions (1, 3) has been formed in the semiconductor body (12) below the base region (2). The emitter or collector region (1, 3) comprising the nanowire (30) has been provided on the surface of the semiconductor body (12) such that its longitudinal axis extends perpendicularly to the surface.
摘要:
An electronic component (100), a first electrode (101), a second electrode (102), and a convertible structure (103) electrically coupled between the first electrode (101) and the second electrode (102), being convertible between at least two states by heating and having different electrical properties in different ones of the at least two states, wherein the convertible structure (103) comprises terminal portions (104, 105) connected to the first electrode (101) and to the second electrode (102), respectively, and comprises a line portion (106) between the terminal portions (104, 105), the line portion (106) having a smaller width or thickness than the terminal portions (104, 105), and wherein the convertible structure (103) is arranged with respect to the first electrode (101) and the second electrode (102) so that, in one of the at least two states, the line portion (106) has an amorphous ‘Spot (107) extending along only a part of the line portion (106).
摘要:
The invention relates to a so-called punch-through diode comprising a stack of, for example, an n++, p−, p+, n++ region (1, 2, 3, 4). In the known diode, these regions (1, 2, 3, 4) are arranged on a substrate (11) in said order. The diode is provided with connection conductors (5, 6). Such a diode does not have a steep I-V characteristic and hence is less suitable as a TVSD (=Transient Voltage Suppression Device). Particularly at voltages below 5 volts, a punch-through diode could form an attractive alternative for use as a TVSD. A punch-through diode according to the invention has an inverted structure, which means that the regions (1, 2, 3, 4) are positioned in reverse order on the substrate (11) and thus, the first region (1) adjoins the surface, and the fourth region (4) adjoins the substrate (11). Such a diode has a very steep I-V characteristic, is very suitable as a TVSD and functions very well at an operating voltage below 5 volts. Preferably, the diode is provided with a field plate (6) and, also preferably, the first region (1) comprises a mixed crystal of silicon and germanium.
摘要:
A phase change memory (PCM) architecture and a method for writing a PCM architecture are described. In one embodiment, a PCM architecture includes a PCM array, word line driver circuits, bit line driver circuits, a source driver circuit and a voltage supply circuit. The bit line driver circuits are connected to the PCM array and the electrical ground. Other embodiments are also described.
摘要:
The invention relates to a semiconductor device (10) with a substrate (11) and a semiconductor body (12) comprising a vertical bipolar transistor with an emitter region, a base region and a collector region (1, 2, 3) of, respectively, a first conductivity type, a second conductivity type opposite to the first conductivity type and the first conductivity type, wherein the collector region (3) comprises a first sub-region (3A) bordering the base region (2) and a second sub-region (3B) bordering the first sub-region (3A) which has a lower doping concentration than the second sub-region (3B), and the transistor is provided with a gate electrode (5) which laterally borders the first sub-region (3A) and by means of which the first sub-region (3A) may be depleted. According to the invention the collector region (3) borders the surface of the semiconductor body (12), while the emitter region (1) is recessed in the semiconductor body (12), and the collector region (3) forms part of a mesa structure (6) formed at the surface of the semiconductor body (12). Such a device (10) has very favorable properties at high frequencies and high voltages and, moreover, is easy to manufacture. In a preferred embodiment the collector (3) comprises a nanowire (30) forming the mesa structure (6).
摘要:
The invention relates to a method of manufacturing a semiconductor device (10) with a substrate (11) and a semiconductor body (1), whereby in the semiconductor body (1) a semiconductor element is formed by means of a mesa-shaped protrusion of the semiconductor body (1), which is formed on the surface of the semiconductor device (10) as a nano wire (2), whereupon a layer (3) of a material is deposited over the semiconductor body (1) and the resulting structure is subsequently planarized in a chemical-mechanical polishing process such that an upper side of the nano wire (3) becomes exposed. According to the invention, a further layer (4) of a further material is deposited over the semiconductor body with the nano wire (2) before the layer (3) of the material is deposited, which further layer (4) is given a thickness smaller than the height of the nano wire (2), and a material is chosen for the further material such that, viewed in projection, the transition between the layer (3) and the further layer (4) is discernible before the nano wire (2) is reached. In this way the nano wire (2) can be exposed more accurately in the device (10). This increases the yield of useful devices (10).
摘要:
The invention relates to a semiconductor device (10) with a semiconductor body (12) comprising a bipolar transistor with an emitter region, a base region and a collector region (1, 2, 3) of, respectively, a first conductivity type, a second conductivity type opposite to the first conductivity type, and the first conductivity type. One of the emitter or collector regions (1, 3) comprises a nanowire (30). The base region (2) has been formed from a layer (20) at the surface of the semiconductor body (12); the other one (3, 1) of the emitter or collector regions (1, 3) has been formed in the semiconductor body (12) below the base region (2). The emitter or collector region (1, 3) comprising the nanowire (30) has been provided on the surface of the semiconductor body (12) such that its longitudinal axis extends perpendicularly to the surface.