Journal ArticleDOI
High-frequency acoustoelectric currents and departures from Ohm's law in thin platelets of CdS I. Linear behaviour
J D Maines,E G S Paige +1 more
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TLDR
In this article, high-frequency currents associated with thin photoconducting cadmium sulphide platelets having flat and parallel faces are reported under conditions when round-trip gain due to acousto-electric amplification is achieved.Abstract:
Experimental observations are reported of high-frequency currents associated with thin photoconducting cadmium sulphide platelets having flat and parallel faces. They appear under conditions when `round-trip gain' due to acousto-electric amplification is achieved. They are correlated with departures from Ohm's law. The results are confined to conditions under which a linear theory is believed applicable. The linear theory is outlined and comparison is made with a variety of experimental observations. Semiquantitative agreement is obtained.read more
Citations
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Journal ArticleDOI
Phonon-Electron Interactions in Piezoelectric Semiconductor Bulk Acoustic Wave Resonators
TL;DR: It is theoretically and experimentally demonstrated that phonon-electron interactions, under appropriate conditions, can result in a significant acoustic gain manifested as an improved quality factor (Q) in PS-BAW resonators.
Book ChapterDOI
Acoustoelectric Effects in Piezoelectric Semiconductors with main Emphasis on CdS and ZnO
N. I. Meyer,M. H. Jørgensen +1 more
TL;DR: A review of physical effects in piezoelectric semiconductors originating in the relative strong coupling between the electronic and sound wave systems is given in this paper, where sound amplification, non-electronic losses, effects of free carrier trapping, and a number of strong non-linear effects such as current saturation, current oscillations, and traveling high field and flux domains are discussed.
Journal ArticleDOI
Non‐Ohmic Behaviour in CdS Acousto‐Electric Oscillators
TL;DR: In this paper, a negative differential conductivity is observed for pulsed as well as for CW operation in thin plane parallel photoconducting CdS platelets and the current is observed to deviate from the ohmic value also outside the electric field range for net round trip gain in the longitudinal wave configuration.
References
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Journal ArticleDOI
Electroelastic Properties of the Sulfides, Selenides, and Tellurides of Zinc and Cadmium
TL;DR: A complete set of elastic, piezoelectric, and dielectric constants for the sulfides, selenides, and tellurides of zinc and cadmium was presented in this article.
Journal ArticleDOI
Amplification of Ultrasonic Waves in Piezoelectric Semiconductors
TL;DR: In this paper, the authors show that for properly prepared material, significant amplification is expected up to the microwave frequencies, and at high frequencies, gain is reduced because electron diffusion smooths out the electron bunching necessary for amplification.
Journal ArticleDOI
Elastic Wave Propagation in Piezoelectric Semiconductors
A. R. Hutson,Donald L. White +1 more
TL;DR: In this paper, a plane elastic wave propagating in a piezoelectric crystal may be accompanied by longitudinal electric fields which provide an additional elastic stiffness when the crystal is also semiconducting, these fields produce currents and space charge resulting in acoustic dispersion and loss.
Journal ArticleDOI
Acoustodynamic Effects in Semiconductors
TL;DR: The presence in a semiconductor of both signs of current carriers makes it possible to disturb the spatial distribution of these carriers appreciably without giving rise to electrical space charge as mentioned in this paper, and the interaction of particles with acoustic waves leads to certain effects which are peculiar to semiconductors; these include a (complex) addition to the elastic modulus and the acoustic effect.