Accession Number : ADA292524

Title :   Strained-Bond Semiconductors.

Descriptive Note : Final technical rept. 1 Sep 91-30 Nov 93,

Corporate Author : ARIZONA STATE UNIV TEMPE

Personal Author(s) : Dow, John D.

PDF Url : ADA292524

Report Date : 18 MAY 1994

Pagination or Media Count : 8

Abstract : Theories of strained-bond semiconductors and superconductors have been developed that promise to have significant impact on future electronic devices of interest to the Air Force. These include: (a) development of a theory of high-temperature superconductivity based on the idea of strained-layer superlattices, (b) elucidation of the physics of doping in Type-II semiconductor superlattices, which is now central to the development of high-speed field-effect transistors, (c) a theory of dimerization and reconstruction on (001) semiconductor surfaces, (d) theory of Mobius transforms as applied to physics and remote sensing, (e) new understanding of how defects affect the vibrational properties of semiconductors, (f) new methods of efficiently computing the trajectories of atoms in semiconductors by a priori molecular dynamics, (g) elucidation of the criteria affecting quantum-well luminescence from Si (h) models of the effects of vacancies in large-gap Al(x)Ga(1-x)N alloys, (i) physics of rare-earth-doped silicon, (j) models of Co adsorption to silicon surfaces, (k) theories of how defects affect the properties of large band-gap superlattices, and (1) models of the effects of electronic structure on the properties of semiconductors. jg p.1

Descriptors :   *SUPERCONDUCTORS, *SEMICONDUCTORS, VIBRATION, AIR FORCE, DYNAMICS, PHYSICAL PROPERTIES, HIGH TEMPERATURE, QUANTUM WELLS, SUPERLATTICES, ELECTRONIC EQUIPMENT, ENERGY GAPS, FIELD EFFECT TRANSISTORS, ATOMS, SURFACES, DEFECTS(MATERIALS), PHYSICS, ALUMINUM, SILICON, REMOTE DETECTORS, GALLIUM, DOPING, LUMINESCENCE, RARE EARTH ELEMENTS, TRAJECTORIES, MOLECULAR PROPERTIES, NITRIDES, DIMERS, SUPERCONDUCTIVITY, ENERGY BANDS.

Subject Categories : Electrical and Electronic Equipment
      Inorganic Chemistry
      Properties of Metals and Alloys
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE