TELECOMMUNICATIONS AND RADIO ENGINEERING - 2011 Vol. 70,
No 5 		 

 

 

 

THE FUNCTION OF NEUTRAL-IMPURITY AND ALLOYED-POTENTIAL ELECTRON SCATTERING IN EXCITATION OF SPACE-CHARGE WAVES IN INTERVALLEY ELECTRON-TRANSFER DEVICES


I.P. Storozhenko
V. Karazin National University of Kharkov,
4, Svoboda Sq., Kharkiv, 61077, Ukraine
E-mail: storozhenko_igor@mail.ru

Abstract
The role of nonhomogeneous neutral-impurity and alloyed-potential electron scattering has been studied. It has been shown that the increasing coordinate dependence of low-filed mobility in n+-n-n+ intervalley electron-transfer devices initiate cause the appearance and the drift of dipole domains. The stationary components of the momentum-relaxation velocity, can be the reason for this such as decreasing coordinate functions of the neutral impurity concentration, the alloyed potential, and the percentage of the binary component in ternary and quaternary semiconductors. The current oscillation efficiency increases and the optimal working frequency decreases at some optimal distribution of the neutral impurity in the active zone.
KEY WORDS:intervalley transfer, electron scattering, variband semiconductor, neutral impurity, alloyed potential, dipole domain

References

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pages 453-459

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