“…12 These organized structures based on ZnO NWs offer several applicative advantages due to their morphologies and dimensions in the piezoelectric eld. 13,14 Several low-cost deposition techniques have been investigated, and it has been found that many important parameters, such as precursor concentration, growth temperature, buffer layer type and thickness, affect the formation of ZnO. [15][16][17] The chemical bath deposition (CBD) technique has attracted the interest of the research community due to its simplicity, cost efficiency, low temperature and environmentally friendly growth deposition, as well as its ability to scale up to large areas for commercial production.…”