Zobrazeno 1 - 10
of 52
pro vyhledávání: '"E. Mytilineou"'
Publikováno v:
Journal of Non-Crystalline Solids. 352:1991-1994
The large differences in electrical conductivity and optical reflectivity between the crystalline and amorphous phases of some chalcogenide alloys are used for storing and reading information in Ovonic memory devices. In this paper we present data fo
Autor:
E. Mytilineou, P. Kounavis
Publikováno v:
Journal of Non-Crystalline Solids. :940-944
The ratio of the capture coefficient over the mobility of free holes (cp/μ) in a-As2Se3 sputtered films is extracted from modulated photocurrent (MPC) measurements at room temperature under various illumination levels. The application of bias light
Autor:
E. Mytilineou, P. Kounavis
Publikováno v:
Journal of Physics: Condensed Matter. 11:9105-9114
The optical bias dependence of the modulated photocurrent (OBMPC) is used to study the light-induced changes of sputtered a-As2Se3 and glow discharge a-Si:H films. It is found that upon strong light exposure, an increase, by an order of magnitude, in
Autor:
Kim H. Chow, Stephen J. Cox, E.A. Davis, R. L. Lichti, Claude Schwab, E. Mytilineou, T. L. Estle, Bassam Hitti
Publikováno v:
Physical Review B. 60:1734-1745
Publikováno v:
Journal of Non-Crystalline Solids. :1079-1082
In this work, results obtained from muon implantation studies on a-Ge:H, prepared by radio-frequency sputtering in an argon/hydrogen mixture at room temperature, are compared with those obtained for polycrystalline (pcr) Ge. Repolarization data on pc
Publikováno v:
Journal of Non-Crystalline Solids. :775-778
Possible bonding sites of hydrogen in the networks of amorphous Se, Se1−xAsx, Se1−xSix and Se1−xGex glasses, with x≤0.33, have been investigated by the muon repolarization technique. For a-Se, whose structure is mainly dominated by chains, an
Autor:
E. Mytilineou, P. Kounavis
Publikováno v:
Journal of Non-Crystalline Solids. 201:119-127
A detailed study of the defect distribution in Ge25Se75−xBix sputtered films is presented by means of the modulated photocurrent and the constant photocurrent methods. The combination of these techniques provides an estimate of the defect distribut
Publikováno v:
Journal of Non-Crystalline Solids. :692-695
MuSR (muon spin rotation/repolarization/resonance/relaxation) is introduced as a useful tool for the study of dilute hydrogen states in amorphous semiconductors. Its application is then exemplified by considering the case of glassy germanium selenide
Publikováno v:
Journal of Non-Crystalline Solids. 195:279-285
Raman spectra of sputtered amorphous Ge25Se75-xBix films, with x from 0 to 19, have been studied. For x = 0 the typical spectrum of an amorphous GeSe3 glass is obtained. It is dominated by the peaks at 200 and 220 cm−1, characteristic of the Ge(Se
Autor:
E. Mytilineou, P. Kounavis
Publikováno v:
Philosophical Magazine Letters. 72:117-122
The kinetics of the reversible light-induced changes of the optical and transport properties at room temperature of sputtered amorphous As2Se3 films are presented. It is observed that the evolution of the absorption edge shift (photodarkening effect)