Abstract:
알루미늄-포함층에의해서브-핀으로부터전기적으로격리되는인듐-리치채널영역을가지는높은이동도 NMOS 핀-기반트랜지스터들을형성하기위한기법들이개시된다. 알루미늄알루미늄-포함층은인듐-리치채널영역을포함하는인듐-포함층내에제공될수 있거나, 또는인듐-포함층과서브-핀사이에제공될수 있다. 인듐-포함층의인듐농도는알루미늄-포함장벽층근처의인듐-푸어농도로부터인듐-리치채널층에서의인듐-리치농도까지등급화될수 있다. 일부예시적인실시예들에따르면, 인듐-리치채널층은핀의최상부에있거나또는그렇지않은경우핀의최상부에근접한다. 등급화는의도적일수 있고, 그리고/또는인듐-리치채널층과알루미늄-포함장벽층의인터페이스에서의원자들의재조직의효과로인한것일수 있다. 다수의변형들및 실시예들이이 개시내용의견지에서인지될것이다.
Abstract:
Techniques are disclosed for forming transistor devices having source and drain regions with high concentrations of boron doped germanium. In some embodiments, an in situ boron doped germanium, or alternatively, boron doped silicon germanium capped with a heavily boron doped germanium layer, are provided using selective epitaxial deposition in the source and drain regions and their corresponding tip regions. In some such cases, germanium concentration can be, for example, in excess of 50 atomic % and up to 100 atomic %, and the boron concentration can be, for instance, in excess of 1E20 cm-3. A buffer providing graded germanium and/or boron concentrations can be used to better interface disparate layers. The concentration of boron doped in the germanium at the epi-metal interface effectively lowers parasitic resistance without degrading tip abruptness. The techniques can be embodied, for instance, in planar or non-planar transistor devices.
Abstract:
The embodiments of the invention relate to a device having a first substrate comprising a transistor; a second substrate; an insulating layer in between and adjoining the first and second substrates; and an opening within the second substrate, the opening being aligned with the transistor; wherein the transistor is configured to detect an electrical charge change within the opening. Other embodiments relate to a method including providing a substrate comprising a first part, a second part, and an insulating layer in between and adjoining the first and second parts; fabricating a transistor on the first part; and fabricating an opening within the second part, the opening being aligned with the transistor; wherein the transistor is configured to detect an electrical charge change within the opening.
Abstract:
Techniques are disclosed for providing a low resistance self-aligned contacts to devices formed in a semiconductor heterostructure. The techniques can be used, for example, for forming contacts to the gate, source and drain regions of a quantum well transistor fabricated in III-V and SiGe/Ge material systems. Unlike conventional contact process flows which result in a relatively large space between the source/drain contacts to gate, the resulting source and drain contacts provided by the techniques described herein are self-aligned, in that each contact is aligned to the gate electrode and isolated therefrom via spacer material.
Abstract:
The present disclosure provides an apparatus and method for implementing a high hole mobility p-channel Germanium ("Ge") transistor structure on a Silicon ("Si") substrate. One exemplary apparatus may include a buffer layer including a GaAs nucleation layer, a first GaAs buffer layer, and a second GaAs buffer layer. The exemplary apparatus may further include a bottom barrier on the second GaAs buffer layer and having a band gap greater than 1.1 eV, a Ge active channel layer on the bottom barrier and having a valence band offset relative to the bottom barrier that is greater than 0.3 eV, and an AlAs top barrier on the Ge active channel layer wherein the AlAs top barrier has a band gap greater than 1.1 eV. Of course, many alternatives, variations and modifications are possible without departing from this embodiment.
Abstract:
A method and a device made according to the method. The method comprises providing a substrate including a first material, and providing a fin including a second material, the fin being disposed on the substrate and having a device active portion, the first material and the second material presenting a lattice mismatch between respective crystalline structures thereof. Providing the fin includes providing a biaxially strained film including the second material on the substrate; and removing parts of the biaxially strained film to form a substantially uniaxially strained fin therefrom.
Abstract:
Conductivity improvements in III-V semiconductor devices are described. A first improvement includes a barrier layer that is not coextensively planar with a channel layer. A second improvement includes an anneal of a metal/Si, Ge or SiliconGermanium/III-V stack to form a metal-Silicon, metal-Germanium or metal-SiliconGermanium layer over a Si and/or Germanium doped III-V layer. Then, removing the metal layer and forming a source/drain electrode on the metal-Silicon, metal-Germanium or metal-SiliconGermanium layer. A third improvement includes forming a layer of a Group IV and/or Group VI element over a III-V channel layer, and, annealing to dope the III-V channel layer with Group IV and/or Group VI species. A fourth improvement includes a passivation and/or dipole layer formed over an access region of a III-V device.