Herein, this paper highlights a route to fabricate functional ZnO-based/polymer nanocomposite MLV devices with copper (Cu) internal electrodes by the CSCC process at temperatures as low as 120 °C (Figure 1). The details of processing steps can be found in the experimental section. I-V measurements and impedance spectroscopy analyses were performed to investigate structure – property relationship and evaluate the functional properties of the Cu co-fired MLV device.