Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Marcel Schmeits"'
Publikováno v:
Applied Surface Science. 291:25-30
Using a custom-made numerical simulation tool, we performed a systematic study of the energy distribution of the interface trap density in a GeSn MOS structure and of their effect on the electrical characteristics such as C – V and impedance spectr
Autor:
Ngoc Duy Nguyen, Marcel Schmeits
Publikováno v:
physica status solidi (a). 203:1901-1914
The electrical characteristics of organic light-emitting devices are calculated for the dc and ac regimes by numerically solving the basic semiconductor equations under steady-state and small-signal conditions. For a given structure, the dc and ac el
Autor:
Marcel Schmeits, Ngoc Duy Nguyen
Publikováno v:
physica status solidi (a). 202:2764-2775
The electrical characteristics of organic light emitting devices containing a continuous distribution of trap states in the forbidden gap are obtained by numerically solving the basic semiconductor equations for the steady state and under small-signa
Publikováno v:
physica status solidi (c). :288-292
Experimental results of electrical characterization of InGaN/GaN multiple-quantum-well electroluminescence test structures obtained by thermal admittance spectroscopy are presented. The studied GaN:Mg/5 × (InGaN/ GaN)/GaN:Si structures were grown on
Autor:
Marcel Schmeits, Ngoc Duy Nguyen
Publikováno v:
Applied Physics B: Lasers and Optics. 74:35-42
The photorefractive effect in semiconducting materials with multiple defects is studied in the case of modulation depth m=1. The basic equations are Poisson’s equation and the continuity equations for electrons, holes and occupied defect levels. Th
Publikováno v:
physica status solidi (b). 228:385-389
Schottky structures based on Mg-doped GaN layers grown by metalorganic chemical vapor deposition (MOCVD) on sapphire substrate are studied by thermal admittance spectroscopy from 90 K to room temperature. Evidence of two impurity levels results from
Autor:
Ngoc Duy Nguyen, Michael Heuken, R. Evrard, Marianne Germain, Bernd Schineller, Marcel Schmeits
Publikováno v:
Journal of Crystal Growth. 230:596-601
The ac characteristics of GaN : Mg and undoped GaN layers, grown by MOVPE on sapphire substrates, are measured for a wide range of temperature and bias conditions, in order to investigate the effect of the magnesium-related level on the transport pro
Publikováno v:
Journal of Applied Physics. 90:985-993
Thermal admittance spectroscopy measurements at temperatures ranging from room temperature to 90 K are performed on Schottky structures based on Mg-doped GaN layers grown by metalorganic vapor phase epitaxy on sapphire. The analysis of the experiment
Publikováno v:
Semiconductor Science and Technology. 15:341-348
Electrical conduction in semiconductor heterojunctions containing defect states in the interface region is studied. As the classical drift-diffusion mechanism cannot in any case explain electrical conduction in semiconductor heterojunctions, tunnelli
Autor:
Marcel Schmeits
Publikováno v:
Journal of Applied Physics. 80:941-947
We have studied the steady‐state dc and small‐signal ac conduction in semiconductor junctions with interface dipoles. The junctions have been modeled according to the two experimental methods used to fabricate these structures. In the first metho