Abstract:
Disclosed herein are graphitic liners for integrated circuit (IC) devices, as well as related devices and methods. For example, disclosed herein are liners that include graphene having a quality gradient, multi-layer liners (e.g., including metal and graphene layers), and liners that line the sidewalls of a via while leaving a bottom of the via open for direct contact with a lower conductive structure.
Abstract:
An electrical device includes a redistribution layer structure, an inter-diffusing material contact structure and a vertical electrically conductive structure located between the redistribution layer structure and the inter-diffusing material contact structure. The vertical electrically conductive structure includes a diffusion barrier structure located adjacently to the inter- diffusing material contact structure. Further, the diffusion barrier structure and the redistribution layer structure comprise different lateral dimensions.
Abstract:
A subject-matter of the invention is a process for metallization with copper which uses a specific silicide for increasing the adhesion of the copper deposit on a semiconductor substrate. In a microelectronics application, this process exhibits the advantage of being able to be employed in the manufacture of integrated circuits in three dimensions by the "via-last" technique. This is because this technique is temperature-limited. In a photovoltaic application, the process of the invention makes it possible to produce a silicide/nickel stack in one step with a lower thermal budget. The process of the invention comprises a step consisting in applying a rapid heat treatment to a substrate covered with nickel, so as to form, between the nickel layer and the silicon layer, an interposed layer which constitutes a promoter of adhesion between the substrate and the copper and which comprises a silicide of Si M stoichiometry, M representing nickel, said silicide being formed by diffusion of a portion of the nickel into the silicon so as to leave a layer of residual nickel at the surface, the heat treatment being carried out at a temperature of less than 350°C and for a period of time of less than 30 minutes.
Abstract:
Described herein are systems and methods for providing a metallization stack to be used in an integrated circuit (IC) package. The metallization stack includes a via for providing electrical interconnection between a first interconnect and a second interconnect. The via is isolated from each of the first and the second interconnects by a respective barrier layer of an electrically conductive material. Enclosing the via from the interconnects using barrier layers reduces electromigration due to interdiffusion of the materials filling each of the interconnects and the material filling the via. Furthermore, such decoupling the via from the interconnects may allow the use of scaled thin conformal barriers for the interconnects and via, thus improving interconnect resistance, via resistance, and/or RC performance of the interconnect.
Abstract:
A multi-layer semiconductor device includes two or more semiconductor sections, each of the semiconductor sections including at least at least one device layer having first and second opposing surfaces and a plurality of electrical connections extending between the first and second surfaces. The electrical connections correspond to first conductive structures. The multi-layer semiconductor device also includes one or more second conductive structures which are provided as through oxide via (TOV) or through insulator via (TIV) structures. The multi-layer semiconductor device additionally includes one or more silicon layers. At least a first one of the silicon layers includes at least one third conductive structure which is provided as a through silicon via (TSV) structure. The multi-layer semiconductor device further includes one or more via joining layers including at least one fourth conductive structure. A corresponding method for fabricating a multi-layer semiconductor device is also provided.
Abstract:
A multi-layer semiconductor device includes two or more semiconductor sections, each of the semiconductor sections including at least at least one device layer having first and second opposing surfaces and a plurality of electrical connections extending between the first and second surfaces. The electrical connections correspond to first conductive structures. The multi-layer semiconductor device also includes one or more second conductive structures which are provided as through oxide via (TOV) or through insulator via (TIV) structures. The multi-layer semiconductor device additionally includes one or more silicon layers. At least a first one of the silicon layers includes at least one third conductive structure which is provided as a through silicon via (TSV) structure. The multi-layer semiconductor device further includes one or more via joining layers including at least one fourth conductive structure. A corresponding method for fabricating a multi-layer semiconductor device is also provided.
Abstract:
An embodiment includes a semiconductor apparatus comprising: a redistribution layer (RDL) including a patterned RDL line having two RDL sidewalls, the RDL comprising a material selected from the group comprising Cu and Au; protective sidewalls directly contacting the two RDL sidewalls; a seed layer including the material; and a barrier layer; wherein (a) the RDL line has a RDL line width orthogonal to and extending between the two RDL sidewalls, and (b) the seed and barrier layers each include a width parallel to and wider than the RDL line width. Other embodiments are described herein.
Abstract:
A semiconductor device includes a die having a via (304) coupling a first interconnect layer (110) to a trench (302). The semiconductor device also includes a barrier layer (306) on sidewalls and adjacent surfaces of the trench, and on sidewalls of the via. The semiconductor device has a doped conductive layer (308) on a surface of the first interconnect layer. The doped conductive layer extends between the sidewalls of the via. The semiconductor device further includes a conductive material (202) on the barrier layer in both the via and the trench. The conductive material is on the doped conductive layer disposed on the surface of the first interconnect layer.
Abstract:
Contact openings are formed into a dielectric material exposing a surface portion of a semiconductor substrate. An interfacial oxide layer is then formed in each contact opening and on an exposed surface portion of the interfacial oxide layer. A NiPt alloy layer is formed within each opening and on the exposed surface portion of each interfacial oxide layer. An anneal is then performed that forms a contact structure of, from bottom to top, a nickel disilicide alloy body having an inverted pyramidal shape, a Pt rich silicide cap region and an oxygen rich region. A metal contact is then formed within each contact opening and atop the oxygen rich region of each contact structure.