ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
Significant improvements in gating of Ge surfaces are achieved with the use of thin, pseudomorphic Si interlayers. Metal-insulator-semiconductor structures with mid-gap interface state densities of 5×1010 cm−2 eV−1 and showing no hysteresis have been realized on both n- and p-type Ge. The key elements of this technology are: surface cleaning, deposition of a thin Si interlayer, and the deposition of the gate dielectric, SiO2, all of which are performed in situ and sequentially at 300 °C in a single chamber with the remote plasma technique. Ion scattering spectroscopy shows complete coverage of the Ge surface by the Si layer. X-ray photoelectron spectroscopy shows the Si interlayer is about 18 A(ring) thick. The Si interlayer prevents the interfacial oxidation of the underlying Ge.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.104247
