RT Journal Article T1 Nanocrystalline tin dioxide thin films as oxidizing gas sensor A1 Agapito Serrano, Juan Andrés A1 Santos Blanco, José Pedro A1 Martin Barreales, Miguel Ángel A1 Vásquez, Hernán AB Nanocrystalline tin dioxide has been employed to develop two types of sensor devices. Two electrical properties, resistivity and work function, increase with oxidizing gas adsorption. The first leads to the classical thin film resistive sensor. The other property is used to design a switching diode. Both devices show a ligh sensitivity and linearity under proper design and operating parameters. Typival figures are 100% resistance change and 50 mV voltage shift for 50 ppb of NO₂ in air. A theoretical model is proposed to explain the results. PB Institute of Electron Technology, Poland SN 0070-9816 YR 2000 FD 2000 LK https://hdl.handle.net/20.500.14352/59743 UL https://hdl.handle.net/20.500.14352/59743 LA eng NO International Seminar on Semiconductor Gas Sensors (SGS) (1.1998. Ustroń, Poland) DS Docta Complutense RD 7 jul 2025