Masters Theses

Abstract

"An analysis has been made of a CdS device which exhibits a transient negative resistance at room temperature and low field strengths whereas previously reported cases of negative resistance in CdS were observed at low temperatures and moderate to high electric fields. The CdS bar was illuminated on one end in the vicinity of an ohmic In contact. Contact was made to the other end of the device with a rectifying Ag contact and the device was reverse biased. Experimental evidence and the analytical results both indicated that it is necessary that the material used to make the negative resistance devices must have a relatively low carrier mobility, high trap density, and a low regeneration rate for trapped carriers. As the light induced carriers reach the rectifying contact and raise the carrier concentration, the voltage across the contact decreases due to the dependence of the voltage on carrier concentration. This induces a transient negative resistance if the transit time of carriers from the illuminated section of the crystal is relatively long"--Abstract, page ii.

Advisor(s)

Dillman, Norman G., 1938-2010

Committee Member(s)

Bolander, Richard W., 1940-
Carson, Ralph S.

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Sponsor(s)

University of Missouri. Space Sciences Research Center

Publisher

University of Missouri--Rolla

Publication Date

1969

Pagination

v, 30 pages

Rights

© 1969 John Irvin Giem, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Cadmium sulfide photoconductive cells
Photovoltaic cells -- Materials -- Electric properties

Thesis Number

T 2221

Print OCLC #

6004177

Electronic OCLC #

806963618

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