The purpose of this investigation was the determination of the nature of certain imperfections in magnesium oxide crystals. Optical absorption and photoconductivity spectra of specimens cleaved from a number of larger pieces were measured. The effects of vacuum heating, of non-stoichiometry and of ultraviolet and X-ray irradiation were investigated. The nature of the imperfections could not be inferred from the experimental results but an energy level diagram consistent with all the data has been deduced. A comparison of the present work with pertinent data from the literature is presented and a basic error in previous photoconductivity measurements is pointed out. A method for the determination of the sign of the charge carriers excited during photoconductivity measurements is described. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/40352 |
Date | January 1957 |
Creators | Peria, William Thomas |
Publisher | University of British Columbia |
Source Sets | University of British Columbia |
Language | English |
Detected Language | English |
Type | Text, Thesis/Dissertation |
Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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