摘要:
The present invention provides a contact electrification effect-based back gate field-effect transistor. The back gate field-effect transistor includes: a conductive substrate; an insulating layer formed on a front face of the conductive substrate; a field-effect transistor assembly including: a channel layer, a drain and a source, and a gate; and a triboelectric nanogenerator assembly including: a static friction layer formed at a lower surface of the gate, a movable friction layer disposed opposite to the static friction layer and separated by a preset distance, and a second electro-conductive layer formed at an outside of the movable friction layer and being electrically connected to the source; wherein, the static friction layer and the movable friction layer are made of materials in different ratings in triboelectric series, and the static friction layer and the movable friction layer are switchable between a separated state and a contact state under the action of an external force. The present invention achieves regulation and control of carrier transport properties in semiconductors by using an electrostatic potential generated in a triboelectric nanogenerator as a gate signal of the back gate field-effect transistor.
摘要:
A thin-film transistor (TFT), a manufacturing method thereof, a display substrate and a display device are disclosed. The TFT includes: an active layer (20), a gate insulating layer (30), a gate electrode (40), an interlayer dielectric layer (50), a source electrode (61) and a drain electrode (62) disposed on a base substrate (10) in sequence. The source electrode (61) and the drain electrode (62) are respectively connected with the active layer (20) via a through hole (53) exposing the active layer (20); the gate insulating layer (30) at least includes a silicon oxide layer (301) and a silicon nitride layer (302) in a two-layer structure; the interlayer dielectric layer (50) at least includes silicon oxide layers (501) and silicon nitride layers (502) in a four-layer structure; the silicon oxide layers (301, 501) and the silicon nitride layers (302, 502) of the gate insulating layer (30) and the interlayer dielectric layer (50) are alternately arranged; and the dimension of one side of the through hole (53) away from the base substrate (10) is greater than that of one side close to the base substrate (10). The TFT can resolve the problem of wire breakage defect of subsequently formed electrodes in through holes.
摘要:
Semiconductor device(s) including a transistor with a gate electrode having a work function monotonically graduating across the gate electrode length, and method(s) to fabricate such a device. In embodiments, a gate metal work function is graduated between source and drain edges of the gate electrode for improved high voltage performance. In embodiments, thickness of a gate metal graduates from a non-zero value at the source edge to a greater thickness at the drain edge. In further embodiments, a high voltage transistor with graduated gate metal thickness is integrated with another transistor employing a gate electrode metal of nominal thickness. In embodiments, a method of fabricating a semiconductor device includes graduating a gate metal thickness between a source end and drain end by non-uniformly recessing the first gate metal within the first opening relative to the surrounding dielectric.
摘要:
A transistor is positioned on a substrate. The transistor includes a semiconductor layer. A buffer layer is positioned between the substrate and the semiconductor layer of the transistor, including an insulating material. A bottom layer is positioned between the substrate and the buffer layer. The bottom layer and the semiconductor layer overlap each other. The bottom layer includes a first layer, a second layer, and a third layer that are stacked on each other in a direction away from the substrate.
摘要:
An SRAM includes a substrate containing a plurality of first substrate regions and a plurality of second substrate regions, a plurality of pull-down transistors formed in the first substrate regions with each pull-down transistor including a first gate structure, and a plurality of pass-gate transistors formed in the second substrate regions with each pass-gate transistor including a second gate structure. A portion of the first substrate region under each first gate structure is doped with first doping ions and a portion of the second substrate region under each second gate structure is doped with second doping ions. Moreover, the concentration of the first doping ions is less than the concentration of the second doping ions, and the work function of the first work function layer in the first gate structures is greater than the work function of the second work function layer in the second gate structures.
摘要:
A Tunnel Field-Effect Transistor (TFET) is disclosed comprising a source-channel-drain structure of a semiconducting material. The source-channel-drain structure comprises a source region being n-type or p-type doped, a drain region oppositely doped than the source region and a intrinsic or lowly doped channel region situated between the source region and the drain region. The TFET further comprises a reference gate structure covering the channel region and a source-side gate structure aside of the reference gate structure wherein the work function and/or electrostatic potential of the source-side gate structure and the reference work function and/or electrostatic potential of the reference gate structure are selected for allowing the tunneling mechanism of the TFET device in operation to occur at the interface or interface region between the source-side gate structure and the reference gate structure in the channel region.
摘要:
An integrated circuit (IC) includes a first memory cell transistor (234a) of a read only memory (ROM) array, the first memory cell transistor including a first metal gate (224a, 228a) of a first work function and having a first threshold voltage. The IC also includes a second memory cell transistor (234b) of the ROM array, the second memory cell transistor including a second metal gate (228b) of a second work function and having a second threshold voltage. The first memory cell transistor and the second memory cell transistor can be of a first conductivity type. Furthermore, the first memory cell transistor can include a first high-k gate dielectric and the second memory cell transistor can include a second high-k gate dielectric. Logic transistors (234c, 234d) can be provided and have metal gates (224b, 228c; 228d) and respective threshold voltages.
摘要:
A semiconductor device and a manufacturing method therefor are disclosed. The semiconductor device comprises: a semiconductor device active region (1); an electrode shape controlling layer (2) disposed on the semiconductor device active region (1), the electrode shape controlling layer (2) containing aluminum, the content of aluminum being reduced in a direction from bottom to up from the semiconductor device active region (1), an electrode region being disposed on the electrode shape controlling layer (2), a groove extended toward the semiconductor device active region (1) and penetrating through the electrode shape controlling layer (2) longitudinally being disposed in the electrode region, all or part of a side surface of the groove having a shape of one of a straight slope, a concave slope protruded away from a central line of the groove and a convex slope protruded toward the central line of the groove; and an electrode (5) disposed in the groove in the electrode region entirely or partially, the electrode (5) having a shape matching with the shape of the groove, a bottom portion of the electrode (5) being contacted with the semiconductor device active region (1). By controlling the shape of the electrode (5), the electrical field intensity near the electrode (5) is changed and performances of the semiconductor device, such as breakdown voltage and reliability, are improved.
摘要:
There is provided a novel gate insulating film forming meterial in consideration of not only initial electric properties immediately after the production of a gate insulating film, but also electric properties after other steps are performed while producing a thin-film transistor using the gate insulating film, and even reliability in the electric properties of the produced element. A gate insulating film forming agent for a thin-film transistor comprising an oligomer compound or a polymer compound, both of which contain a repeating unit having a triazinetrione ring containing a hydroxyalkyl-containing group as a substituent on a nitrogen atom, and a solvent; a gate insulating film produced from the gate insulating film forming agent; a thin-film transistor having the gate insulating film; and a method for producing the gate insulating film or thin-film transistor.
摘要:
Embodiments of the present invention describe a epitaxial region on a semiconductor device. In one embodiment, the epitaxial region is deposited onto a substrate via cyclical deposition-etch process. Cavities created underneath the spacer during the cyclical deposition-etch process are backfilled by an epitaxial cap layer. The epitaxial region and epitaxial cap layer improves electron mobility at the channel region, reduces short channel effects and decreases parasitic resistance.