Zobrazeno 1 - 10
of 35
pro vyhledávání: '"C.D. Kourkoutas"'
Autor:
P.C. Euthymiou, G. E. Giakoumakis, B. Szentpáli, B. Kovács, G. E. Zardas, K. Somogyi, P. C. Banbury, C.D. Kourkoutas
Publikováno v:
Acta Physica Hungarica. 74:7-19
We investigated the effect of 0.65 MeV electron irradiation on the transport parameters of GaAs FATFETs with an S-doped active channel of thickness 0.2 μm to 5 μm. We measured mainly the drift mobility and carrier concentration profile at severall
Autor:
George J. Papaioannou, C.D. Kourkoutas
Publikováno v:
Solid-State Electronics. 37:373-376
In the present work we propose a fast solution of the Poisson's equation in FETs. The method is valid, if the deep centers are uniformly distributed within 1 μm below the interface between the active layer and the substrate. The implicit method is c
Publikováno v:
Solid State Communications. 89:45-49
Electron irradiation at room temperature introduces in GaAs a donor type electronic state Tx at 0.18 eV, which is associated with the E3 electron trap. The presence of Tx is observed at depths d > 1.5 microm, which correspond to the limits of the dep
Autor:
T. A. Kuzemchenko, V.S. Vavilov, P.D. Bekris, S. Yu. Sokolov, D. L. Khavroshin, C.D. Kourkoutas, M.V. Chukichev, G. N. Galkin, L. K. Vodopyanov, R. R. Resvanov, E. A. Bobrova, Yu. A. Aleshchenko, A. E. Kiv, P. C. Euthymiou
Publikováno v:
Radiation Effects and Defects in Solids. 125:323-331
New experimental data are presented which indicate the change of defect centers concentration in GaAs at macroscopic (up to millimeters) distances from the implanted regions edge. These data were obtained by locally exited cathodoluminescence, by obs
Publikováno v:
Solid State Communications. 78:849-852
Drift mobility and electron concentration values in GaAs MESFETs obtained by capacitance-conductance measurements are corrected by means of a self-consistent iterative procedure. The final results are compared with the experimental Hall mobility data
Autor:
M. Kuliffayova, G.J. Papaioannou, J. Novac, C.D. Kourkoutas, P. Kordos, V. Ioannou-Sougleridis
Publikováno v:
Solid State Communications. 78:543-546
The scattering mechanisms of holes in In 0.53 Ga 0.47 As layers doped with Pr are investigated by analyzing the conductivity and Hall mobility data. The contribution of each individual scattering mechanism is calculated and values for the characteris
Publikováno v:
Solid State Communications. 74:305-308
DLTS studies on as grown Czochralski n -type GaP : Te show peaks corresponding to electron activation of 0.205, 0.485, 0.65 and 0.567 eV. After irradiation by 1 MeV electrons at room temperature two new levels are found at 0.248 and 0.329 eV and the
Autor:
Dimitrios Nikolopoulos, S. David, Ioannis Sianoudis, C.D. Kourkoutas, Dionisis Cavouras, G.S. Panayiotakis, Ioannis Valais, Christos Michail, Ioannis Kandarakis
Publikováno v:
2006 IEEE Nuclear Science Symposium Conference Record.
LYSO:Ce and LuYAP:Ce are single crystal scintillators of high density, non-hydroscopic, high light yield and short decay time and have been successfully used in small animal PET imagers. In our study, the luminescence emission properties of (Lu0.9,Y0
Publikováno v:
Solid State Communications. 80:321-323
The influence of the electron and hole traps, introduced by electron irradiation, on the drift mobility and carrier concentration profiles of the GaAs epitaxial layer structure was investigated. The DLTS and DLOS measurements indicated three electron
Publikováno v:
Solid State Communications. 74:999-1001
A relation between the shift of the Fermi level and the Hall mobility at room temperature is presented for a variety of direct gap III–V group semiconductors. The theoretical calculations concern particularly the sensitivity of the mobility due to