Measuring conductivity of a semiconductor

1. May 19, 2010

Cheetox

I'm wondering how one would go about measuring the conductivity of a semiconductor with variation in temperature, I assume the non ohmic behaviour prevents one from making simple voltage current measurements and then inferring resistance and the conductivity....any answers much appreciated...

2. May 19, 2010

Gokul43201

Staff Emeritus
If you know you have non-ohmic behavior, then specifying a voltage-independent conductivity is more or less meaningless. What may be useful, in some cases, is to specify the conductivity in the low voltage limit. In general though, you report the entire I-V curve over the entire range of relevant voltages. If the semiconductor is essentially Ohmic in the region of interest, then you don't have to worry about these thing. But in any case, the approach is indeed to perform I-V measurements on suitably fabricated devices.