Semiconductor Electrodes for Measurement of Acid Concentrations

Abstract

The present investigation has revealed that a number of semiconductor materials, principally germanium and silicon, can be used to monitor acid concentrations. The semiconductor serves as the anode of an electrolytic cell while a cathode of stainless steel or similar metallic conductor inert to the electrolyte completes the circuit upon application of a suitable potential. Because of the fragile nature of semiconductors and their light sensitivity a special combination electrode was designed.