Vertical current transport processes in MOS-HEMT heterostructures

2020 ◽  
Vol 527 ◽  
pp. 146605
Author(s):  
Juraj Racko ◽  
Tibor Lalinský ◽  
Miroslav Mikolášek ◽  
Peter Benko ◽  
Sebastian Thiele ◽  
...  
1993 ◽  
Vol 300 ◽  
Author(s):  
Thomas Clausen ◽  
Otto Leistiko

ABSTRACTThe limiting transport processes for current flow across metal-semiconductor (MS) ohmic contacts to n- and p-type InP have been investigated for Au-based metallizations containing the doping elements Germanium and Zinc. It has been found that the Schottky barrier is lowered and in some cases vanishes during annealing. The current flow for an optimal ohmic contact is diffusion limited by a Fermi potential difference between the alloyed metallization and the bulk InP. For non-optimal ohmic contacts the current flow is also limited by thermionic emission across a low effective Schottky barrier.


1995 ◽  
Vol 256 (1-2) ◽  
pp. 23-30 ◽  
Author(s):  
A.P. Belyaev ◽  
V.P. Rubets ◽  
I.P. Kalinkin

2020 ◽  
Vol 23 (4) ◽  
pp. 339-345
Author(s):  
A.K. Uteniyazov ◽  
◽  
A.Yu. Leyderman ◽  
R.A. Ayukhanov ◽  
E.S. Esenbaeva ◽  
...  

The results of studies of the current-voltage characteristics of the Al–Al2O3–p-CdTe–Mo structure in the forward direction of the current in the dark and under light illumination have been presented. These characteristics have four sections of the power-law dependence of the current on the voltage in the form J ~ Vα. It has been shown that the Al–Al2O3–p-CdTe–Mo structure can be considered as a n+-p diode structure with a long base, in which the current transport processes are described by the drift model of ohmic relaxation under conditions of non-equilibrium carriers recombination occurring through a pair two-level recombination complex.


2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
A. K. Uteniyazov ◽  
A. Y. Leyderman ◽  
M. V. Gafurova ◽  
Kh. N. Juraev ◽  
K. A. Dauletov

It was established that ultrasonic treatments (USTs) have practically no effect on the patterns of current flow in the Al-Al2O3-p-CdTe-Mo structure in the forward direction, namely, as in the absence of ultrasonic action, they appear in the sequence J∼V, J∼V2, J∼V5.3, and J∼V2. The effect of ultrasonic treatments affects only the magnitude of the flowing current; at low voltages, the current becomes somewhat larger, and at high voltages, it practically does not change. Changes in the magnitude of the flowing current are explained on the basis of the assumption that the recombination of nonequilibrium carriers in such a structure occurs through complex pair recombination complexes and, as a result of ultrasonic treatments, the number of both small acceptors and deep recombination centers increases.


1984 ◽  
Vol 75 ◽  
pp. 597
Author(s):  
E. Grün ◽  
G.E. Morfill ◽  
T.V. Johnson ◽  
G.H. Schwehm

ABSTRACTSaturn's broad E ring, the narrow G ring and the structured and apparently time variable F ring(s), contain many micron and sub-micron sized particles, which make up the “visible” component. These rings (or ring systems) are in direct contact with magnetospheric plasma. Fluctuations in the plasma density and/or mean energy, due to magnetospheric and solar wind processes, may induce stochastic charge variations on the dust particles, which in turn lead to an orbit perturbation and spatial diffusion. It is suggested that the extent of the E ring and the braided, kinky structure of certain portions of the F rings as well as possible time variations are a result of plasma induced electromagnetic perturbations and drag forces. The G ring, in this scenario, requires some form of shepherding and should be akin to the F ring in structure. Sputtering of micron-sized dust particles in the E ring by magnetospheric ions yields lifetimes of 102to 104years. This effect as well as the plasma induced transport processes require an active source for the E ring, probably Enceladus.


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