Electrical Conductivity Cell for Organic Semiconductors

This report describes the construction, calibration, and performance of a simple electrical conductivity cell for use in measuring the electrical conductivity: temperature relationship of organic semiconductors and related materials. The cell allows operation in a vacuum or inert gas atmosphere over a temperature range adequate to make rapid and reliable measurements of ρ, ρ0, and Δ EG for powdered organic semiconductor samples. Resistivities in the range of 1<ρ<108 Ω-cm may be measured with an estimated error of ±1.2%.