Title

Photoconductivity and acoustic wave interaction with charge carriers in cadmium sulfide.

Date of Award

2004

Degree Type

Thesis

Degree Name

M.Sc.

Department

Physics

Keywords

Physics, Acoustics.

Rights

CC BY-NC-ND 4.0

Abstract

The principle focus of this investigation is ultrasonic acoustic wave interaction with charge carriers in cadmium sulfide. In order to facilitate this study, however, effort is spent to better characterize the metastable crystal conductivities that were observed in preliminary research. Specifically, an experiment is carried out to determine the behaviour of three instabilities over time periods of one hour. Upon analysing the results of this procedure, the effect of temperature on CdS conductivity is considered. In the portion of thesis paper regarding acoustics, preliminary endeavours are made to observe some of the fundamental phenomenon associated with the acousto-electric effect. Wave attenuation and velocity dispersion are documented for specific frequencies of 4.1 MHz. Further, they are compared to theory. Having completed this, an investigation is undertaken which explores the amplitudes of the higher harmonics with respect to conductivity. In the first experiment, the amplitude of the 2nd harmonic is compared with the relative amplitudes of consecutive echoes. As well, the relationship between the relative amplitudes of the 2nd through 5th harmonic is explored. And finally, correlations are made between the data taken in the first and second procedures.Dept. of Physics. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis2004 .A78. Source: Masters Abstracts International, Volume: 43-01, page: 0224. Thesis (M.Sc.)--University of Windsor (Canada), 2004.