The Role of Acceptor Density on the High Channel Carrier Density I-V characteristics of AlGaAs/GaAs MODFETs

1990 ◽  
Author(s):  
Richard J. Krantz ◽  
Walter L. Bloss
Keyword(s):  
Carrier Density

Transport and fluctuations in nonlinear-dissipative systems: role of interparticle collisions

1999 ◽  
Vol 4 ◽  
pp. 31-86 ◽  
Author(s):  
R. Katilius ◽  
A. Matulionis ◽  
R. Raguotis ◽  
I. Matulionienė
Keyword(s):  
Electric Fields ◽  
Carrier Density ◽  
Experimental Results ◽  
Dissipative Systems ◽  
Doped Semiconductors ◽  
Electron Diffusion ◽  
Electron Collisions ◽  
Electric Noise ◽  
Diffusion Phenomena

The goal of the paper is to overview contemporary theoretical and experimental research of the microwave electric noise and fluctuations of hot carriers in semiconductors, revealing sensitivity of the noise spectra to non-linearity in the applied electric field strength and, especially, in the carrier density. During the last years, investigation of electronic noise and electron diffusion phenomena in doped semiconductors was in a rapid progress. By combining analytic and Monte Carlo methods as well as the available experimental results on noise, it became possible to obtain the electron diffusion coefficients in the range of electric fields where inter-electron collisions are important and Price’s relation is not necessarily valid. Correspondingly, a special attention to the role of inter-electron collisions and of the non-linearity in the carrier density while shaping electric noise and diffusion phenomena in the non-equilibrium states will be paid. The basic and up-to-date information will be presented on methods and advances in this contemporary field - the field in which methods of non-linear analytic and computational analysis are indispensable while seeking coherent understanding and interpretation of experimental results.

Valence State of Ru at the Mn Sites in Pr0.5Sr0.5MnO3

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3745-3748 ◽  
Author(s):  
B. H. Kim ◽  
J. S. Kim ◽  
D. C. Kim ◽  
Y. W. Park ◽  
A. Maignan ◽  
...  
Keyword(s):  
Valence State ◽  
Carrier Density ◽  
Magnetic Interactions ◽  
Charge Carrier Density ◽  
Edge Structure ◽  
X Ray ◽  
Ru Doping ◽  
X Ray Absorption ◽  
Tetravalent State

Valence state of the doped Ru at the Mn sites in Pr 0.5 Sr 0.5 MnO 3 has been studied using Ru K-edge X-ray absorption near-edge structure (XANES) spectroscopy. In comparison with XANES of reference ruthenates, it is found that the Mn-site doped Ru is dominantly in tetravalent state. This result suggests that the change of charge carrier density by Ru doping is not sufficient to understand drastic enhancement of ferromagnetism observed in the transport properties of Ru-doped Pr 0.5 Sr 0.5 MnO 3. The prime role of Ru in Mn 3+– O – Mn 4+ networks is discussed in terms of the valency effect and the magnetic interactions between doped Ru and Mn ions.

Hydrostatic pressure control of the carrier density in GaAs / GaAlAs heterostructures; Role of the metastable deep levels

1984 ◽  
Vol 142 (1-3) ◽  
pp. A250
Author(s):  
J.M. Mercy ◽  
C. Bousquet ◽  
J.L. Robert ◽  
A. Raymond ◽  
G. Gregoris ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Carrier Density ◽  
Pressure Control ◽  
Deep Levels

Inhomogeneous carrier density and the role of disorder in the normal state of (TMTSF)2PF6

2003 ◽  
Vol 137 (1-3) ◽  
pp. 1299-1301 ◽  
Author(s):  
S.E. Brown ◽  
W. Yu ◽  
F. Zamborszky ◽  
B. Alavi
Keyword(s):  
Normal State ◽  
Carrier Density

scholarly journals Dynamic saturation in semiconductor optical amplifiers: accurate model, role of carrier density, and slow light

2010 ◽  
Vol 18 (2) ◽  
pp. 685 ◽  
Author(s):  
Perrine Berger ◽  
Mehdi Alouini ◽  
Jérôme Bourderionnet ◽  
Fabien Bretenaker ◽  
Daniel Dolfi
Keyword(s):  
Carrier Density ◽  
Slow Light ◽  
Optical Amplifiers ◽  
Semiconductor Optical Amplifiers ◽  
Accurate Model

Ion Conducting studies in PEO:NaI and its composite : Carrier density approach

2020 ◽  
Vol 13 ◽  
Author(s):  
Kushal Mehrotra ◽  
Divya Singh ◽  
Bhaskar Bhattacharya
Keyword(s):  
Electrical Conductivity ◽  
Polyethylene Oxide ◽  
Polymer Electrolytes ◽  
Carrier Density ◽  
Sodium Iodide ◽  
Complex Impedance ◽  
Charge Concentration ◽  
Ion Conducting ◽  
Composite Carrier

: The modulation in electrical conductivity of polymer electrolyte, viz., polyethylene oxide (PEO) complexed with different concentration of sodium iodide is studied. The role of mobility and charge concentration in electrical conductivity of polymer electrolytes is established. The effect on charge concentration, mobility and conductivity of PEO+NaI film by adding three different concentration of silicon is reported. The polarized optical microscopy (POM) is used to study the morphology of the surface of PEO, PEO+NaI films dispersed with Si. The complex impedance spectroscopy (CIS) method is used to measure the electrical conductivity of film.

scholarly journals Role of the carrier density in the transport mechanisms of polycrystalline ZnO films

2021 ◽  
Author(s):  
Antonio Di Trolio ◽  
Alberto Maria Testa ◽  
Aldo Amore Bonapasta
Keyword(s):  
Electrical Resistivity ◽  
Carrier Density ◽  
Transport Processes ◽  
Zno Films ◽  
Transport Mechanisms

Transport processes occurring in polycrystalline ZnO have been investigated here by measuring the resistivity as a function of temperature in ZnO films showing an electrical resistivity spanning two orders of...

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