Resistivity Of Semiconductors By Four Probe Method

Description

Resistivity of semiconductors by four probe method at different Temperatures & Determination of Band gap
The experiment consists of the following :
(i) Four Probe Arrangement
(ii) Oven (upto 200C)
(iii) Sample : Ge Crystal mounted
(iv) Thermometer (0-200C)
(v)Four Probe Setup
(a) Constant Current power supply digital Accuracy : 0.25% of the reading 1 digit Load Regulation : 0.03% for no load to full load
(b)Electronic Millivoltmeter 200 mV Accuracy : 0.1% of reading = 1 digit Impedence : 1 Mohm
Display : 3 digit, 7 segment LED (12.5mm) height with auto polarity and decimal indication.
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