Light activation of semiconductor-based gas sensors has been exploited as a solver approach for room-temperature operation with improving sensing performance. In this perspective, this work presents the study of innovative sensing materials featuring optical and electrical properties suitable for visible light activation and to a higher energy efficiency of photoconversion. Nanostructured zinc oxide was sensitized by doping with an alkali metal (sodium) and it was used as functional material in a screen-printed gas sensor. It exhibited high photosensitivity to NO2 under blue light irradiation with fast kinetics and complete reversible response.
Towards alkali-doped chemoresistive gas sensors: a preliminary study on visible light-activated Na:ZnO
Barbara Fabbri;Elena Spagnoli;Emanuela Tavaglione;Arianna Rossi;Paolo Bernardoni;Vincenzo Guidi
2023
Abstract
Light activation of semiconductor-based gas sensors has been exploited as a solver approach for room-temperature operation with improving sensing performance. In this perspective, this work presents the study of innovative sensing materials featuring optical and electrical properties suitable for visible light activation and to a higher energy efficiency of photoconversion. Nanostructured zinc oxide was sensitized by doping with an alkali metal (sodium) and it was used as functional material in a screen-printed gas sensor. It exhibited high photosensitivity to NO2 under blue light irradiation with fast kinetics and complete reversible response.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
