Abstract:
A microelectronic device (100) includes a gated graphene component (102) over a semiconductor material (106). The gated graphene component (102) includes a graphitic layer (126) having at least one layer of graphene. The graphitic layer (126) has a channel region (128). A first connection (134) and a second connection (136) make electrical connections to the graphitic layer (126) adjacent to the channel region (128). The graphitic layer (126) is isolated from the semiconductor material (106). A backgate region (142) having a first conductivity type is disposed in the semiconductor material (106) under the channel region (128). A first contact field region (144) and a second contact field region (146) are disposed in the semiconductor material (106) under the first connection (134) and the second connection (136), respectively. At least one of the first contact field region (144) and the second contact field region (146) has a second, opposite, conductivity type.
Abstract:
Methods for fabricating a device structure such as a bipolar junction transistor (80), device structures for a bipolar junction transistor, and design structures for a bipolar junction transistor. The device structure includes a collector region (18) formed in a substrate (10), an intrinsic base (84) coextensive with the collector region, an emitter (74) coupled with the intrinsic base, a first isolation region (12) surrounding the collector region, and a second isolation region (42, 43) formed at least partially within the collector region. The first isolation region has a first sidewall (13) and the second isolation region having a second sidewall (51a, 53a) peripherally inside the first sidewall. A portion (37, 39) of the collector region is disposed between the first sidewall of the first isolation region and the second sidewall of the second isolation region.
Abstract:
A novel semiconductor device (200) with less pattern distortion and novel processes for fabricating the same are disclosed. The novel method includes selecting a first substrate (211), forming a photo resist (212) above the first substrate (211) and selectively etching it to expose an opening to the first substrate (211). Dopant ions such as Arsenic are implanted on the first substrate (211), the said implanting step defining a buried layer profile (214) and implanting the ions on the substrate (211). The ions are activated in a thermal drive-in process, wherein the said activation process activates the ion and forms a thick silicon oxide layer (213) above the substrate (211) and buried layer profile (214). Excess upper portion of the silicon oxide layer (213) is removed. A second epitaxial layer (216) may be formed above the buried layer profile (214) and first substrate (211) and a wafer mark (217) etched on the second epitaxial layer (216).
Abstract:
A process of forming an integrated circuit containing a bipolar junction transistor (BJT) (1002) and a metal oxide semiconductor (MOS) (1004) transistor by cooling the integrated circuit substrate to 5 °C or colder and concurrently implanting dopants, at a specified minimum dose according to species, into the emitter region of the BJT and into the source and drain regions of the MOS transistor.
Abstract:
Methods, devices, and systems are provided for a select device that can include a semiconductive stack of at least one semiconductive material formed on a first electrode, where the semiconductive stack can have a thickness of about 700 angstroms () or less. Each of the at least one semiconductive material can have an associated band gap of about 4 electron volts (eV) or less and a second electrode can be formed on the semiconductive stack.
Abstract:
Disclosed are embodiments of a Schottky barrier diode (100). This Schottky barrier diode can be formed in a semiconductor substrate (101) having a doped region (110) with a first conductivity type. A trench isolation structure (120) can laterally surround a section (111) of the doped region at the top surface (102) of the substrate. A semiconductor layer (150) can be positioned on the top surface of the substrate. This semiconductor layer can have a Schottky barrier portion (151) over the defined section (111) of the doped region and a guardring portion (152) over the trench isolation structure laterally surrounding the Schottky barrier portion. The Schottky barrier portion can have the first conductivity type and the guarding portion can have a second conductivity type different from the first conductivity type. A metal silicide layer (140) can overlie the semiconductor layer. Also disclosed are embodiments of a method of forming this Schottky barrier diode and of a design structure for the Schottky barrier diode.