Band Alignment Engineering at Cu2O/ZnO Heterointerfaces
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We applied the internal photoemission technique to the direct observation of deep levels together with barrier heights and band discontinuities at different semiconductor heterostructure interfaces. Its performances and capabilities are superior to those o ...
A study of the formation of In- and Au-GaAs(100) interfaces is reported. The metal overlayers are deposited in ultrahigh vacuum on room-temperature (RT) and low-temperature (LT) (100)GaAs grown by molecular-beam epitaxy, following the evaporation of a prot ...
Valence- and conduction-band offsets can be induced at GaAs(100) polar homojunctions by means of ultrathin Si intralayers. The microscopic interface dipole responsible for the creation of such offsets can be varied by changing the Si intralayer thickness; ...
Schottky-barrier formation for Al on GaAs(110) was analyzed theoretically and with the aid of synchrotron-radiation photoemission experiments as a function of the metal coverage. For various Al-overlayer thicknesses we calculated the most stable geometries ...
Soft x-ray photoemission spectroscopy measurements reveal strong differences in chemical bonding and diffusion between II–VI and III–V compound semiconductor-metal interfaces which provide a chemical basis for their systematic differences in Schottky barri ...
We report a high-resolution core-level spectroscopy study of the (4 x 2)-c(8 x 2) GaAs(100) surface prepared by thermal decapping of surfaces grown by molecular-beam epitaxy. Ga and As 3d core levels are analyzed using very strict parameter conditions, and ...
We use the Kelvin method to study the synchrotron radiation induced surface photovoltage (SPV) on GaAs(110) as a function of metal coverage and temperature. We find that varying the temperature alone does not induce significant change in band bending in th ...
The use of surface-sensitive experimental techniques has produced in recent years important advances in the understanding of the microscopic nature of heterojunction parameters. In particular, valence band discontinuity has been measured for a large number ...
