Nanosensors Based on a Single ZnO:Eu Nanowire for Hydrogen Gas Sensing
Cristian Lupan, Abhishek Kumar Mishra, Niklas Wolff, Jonas Drewes, Helge Krüger, Alexander Vahl, Oleg Lupan, Thierry Pauporté, Bruno Viana, Lorenz Kienle, Rainer Adelung, Nora H. de Leeuw, Sandra Hansen
Abstract
during UV irradiation and its effect on the sensing mechanism. The nanowire sensing approach here demonstrates the feasibility of using such small devices to detect hydrogen leaks in harsh, small-scale environments, for example, stacked battery packs in mobile applications. In addition, the results obtained are supported through density functional theory-based simulations, which highlight the importance of rare earth nanoparticles on the oxide surface for improved sensitivity and selectivity of gas sensors, even at room temperature, thereby allowing, for instance, lower power consumption and denser deployment.