The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A minimalistic exciton model is developed to describe the excitons in pristine semiconducting crystals. The model accounts for the lattice, spin-orbit, and exchange interactions, and hence describes how excitons interact with electrons and photons.
We demonstrate how several experiments on graphene transport can be explained semi-quantitatively within a Non-Equilibrium Green's Function (NEGF) formalism. The key features are controlled by — (i) the boundary potential established at a metal-graphene interface (Fig. 1a-b), (ii) charge puddles that help the conductivity in the ballistic limit and hurt in the diffusive limit (Fig. 1c-d) and iii)...
Graphene has attracted significant interest as a possible candidate for future transistors because of its high carrier mobility and current density [1]. The biggest setback of intrinsic graphene in digital applications is the absence of a bandgap, needed for digital logic to distinguish between high and low current states. Experiments demonstrated the opening of a bandgap by either applying an interlayer...
We investigate theoretically the performance advantages of all-graphene nanoribbon field-effect transistors (GNRFETs) whose channel and source/drain (contact) regions are patterned monolithically from a 2-D single sheet of graphene. In our simulated devices, the source/drain and interconnect regions are composed of wide GNR sections that are semimetallic, while the channel regions consist of narrow...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.