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Accession Number:
AD0021862
Title:
RESEARCH ON THE ELECTRICAL PROPERTIES OF SEMI-CONDUCTORS
Corporate Author:
ILLINOIS UNIV AT URBANA ELECTRICAL ENGINEERING RESEARCH LAB
Report Date:
1953-09-15
Abstract:
Studies are being made of the semiconducting properties of single crystals of PbTe. Prolonged heating of the Pb in a Vycor vessel before adding the Te apparently aided in the removal of oxides. The excess Pb excluded during growth appeared as a free-Pb cap on the end of the crystal. The crystal was cleaved into slices about 18 in. thick to measure the thermoelectric effect. The top slice was n type the others were p type. A p-n juncture was found. Tesistivity rho measurements were made over a small temperature range approximately 200 deg to 375 deg K for 1 n-type sample. The plot of the 1n rho vs 1temperature which is included was a straight line. A value of 1.2x1017 carriers was estimated from an assumed room-temperature mobility of 2000 sq cmv-sec.
Descriptive Note:
Status rept. no. 4
Pages:
0006
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
N6ORI-071-38
File Size:
0.61MB
