A hybrid OTFT-SPR system for simultaneous electronic and optical sensing.

ABSTRACT: In this study, we present the development of an advanced multivariable sensing platform that combines a flexible extended-gate organic thin-film transistor (ExG-OTFT) with a surface plasmon resonance (SPR) readout of its sensing surface. This device architecture overcomes the limitations of prior combined SPR and field-effect transistor (FET)-based systems, thanks to the spatial separation of the sensing surface from the transistor body, and the implementation of a pseudo-reference electrode, which significantly improves the system reliability. We demonstrate the potential of this solution through the simultaneous electrical and optical detection of layer-by-layer formation of polyelectrolyte multilayers in real-time. While the SPR-based transduction is sensitive to local refractive index

SUBMITTER: Hatami D 

PROVIDER: S-EPMC12044059 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature