Fig. 6From: Gas-Sensing Devices Based on Zn-Doped NiO Two-Dimensional Grainy Films with Fast Response and Recovery for Ammonia Molecule DetectionXRD analysis of NiO films doped with different concentrations of Zn. XRD patterns of a undoped, b 3 %, and c 6 % Zn-doped NiO filmsBack to article page