Environmental Chemical Detection with the Optically Gated Transistor (ENVIROGT)

Abstract

A system may include an optoelectronic semiconductor device including a semi-conductive substrate, an insulative layer, a photo-active layer, a source electrode, and a drain electrode. The system may further include a light source configured to selectively apply light to a surface of the photo-active layer, where the light excites electron-hole pairs within the substrate and the photo-active layer enabling an electrical current to pass between the source electrode and the drain electrode, where the presence of a chemical substance in proximity to the surface of the photo-active layer alters the electrical current in the presence of the light, and where measurement of the electrical current during application of the light enables the chemical substance to be identified.

Dependencies are inferred from the claim text.