Spintronics and Ferromagnetism in Wide-Band-Gap Semiconductors

Defects, Impurities and Doping Levels in Wide-Band-Gap Semiconductors

A fundamental understanding of the mechanisms governing the behavior of defects and impurities is essential to control doping in semiconductors. Wide-band-gap semiconductors, in particular, often exhibit doping-related problems. We discuss how rst-principles theoretical techniques can be applied to the calculation of formation energies and concentrations of native defects and dopant impurities....

Workshop on Defects in Wide Band Gap Semiconductors

Solar-blind UV detectors based on wide band gap semiconductors

Solid-state photon detectors based on semiconductors other than silicon are not yet considered mature technology but their current development opens new possibilities, also for space observations. Such devices are especially attractive for ultraviolet radiation detection, as semiconductor materials with band gaps larger than that of silicon can be produced and used as “visible-blind” or “solar-...

Tunneling spectroscopic analysis of optically active wide band . . gap semiconductors

Tunneling spectroscopy has been used to detect the photoexcitation of charge carriers in the wide band-gap semiconductors, ZnO and cubic SiC. Because the process is energy sensitive, valence-toconduction hand or defect charge transfer transitions may be selectively excited and detected with the scanning tunneling microscope. Two types of transitions were detected which change the tunneling resp...

Nanostructures, magnetic semiconductors and spintronics

The aim of this paper is to give a brief overview of recent advances in the area of semiconductor nanomaterials, which represent extremely promising applications for materials with the spin-polarized transport of the charge carriers. It is shown on the basis of the last theoretical and experimental achievements that the development of diluted semiconductors with the controlled disorder and the ...