Surface Reactivity in Low Temperature Deposited Amorphous/Crystalline SnO2 Thin Films: Chemisorbed Oxygen Activity and CO Oxidation Pathways Revealed by In Situ XPS and Mass Spectrometry

Engin Ciftyurek, Zheshen Li, Klaus Schierbaum

This study investigates two critical aspects of the gas sensing mechanism in metal oxide sensors: (1) the conditions that maximize chemisorbed oxygen concentration as a function of…