Cu-Infused ZnO Thin Film Utilizing (Na-CMC) for NO2 Sensor Applications

Abstract

The Copper-Doped ZnO thin film gas sensor, which uses a sol-gel preparation method, has been discussed in this paper. At first, we prepare two different types of solution for gas sensing application in a perfect manner; for that, we take Zinc Nitrate and Hexa hydrate solutions with the combination of Na-CMC solution for getting thickening agents, then we could add Cu as dopants and coated that solution on well-cleaned glass substrates and then annealed that glass substrate, at 400˚C for 3 hrs. After that process, we took various analyses and concluded whether the film was suitable for gas sensor applications; the grain size varied by using XRD, which shows films are cluster, nanoparticle structures according to (JCPDS card No: 89-7102), the structural morphology has been studied using Fe-SEM it shows CLUSTER and small ball like structure, VI-Characteristics it shows sharp increase in current from -1.00E.010 to 2.50 E.010 with the given voltage of 0v-5v for VI. The varied material is more suitable for gas sensing applications. Finally, we take gas sensors that were studied with the closed chamber of the cooker pressure model. The (Na-CMC) with ZnO Cu-doped film present in the high sensitivity with a robust sensor type.