Zinc oxide (ZnO) nanowires (NWs) are excellent candidates for the fabrication of energy harvesters, mechanical sensors, and piezotronic and piezophototronic devices.In order to integrate ZnO NWs into flexible devices, low-temperature fabrication methods are required that do not damage the jalkapallo asu plastic substrate.To date, the deposition of patterned ceramic thin films on flexible substrates is a difficult task to perform under vacuum-free conditions.
Printing methods to deposit functional thin films offer many advantages, such as a low cost, low temperature, high throughput, and patterning at the same stage of deposition.Among printing techniques, gravure-based techniques are among the most attractive due to their ability to produce high quality results at high speeds and perform deposition over a large area.In this paper, we explore gravure printing as a cost-effective high-quality method to deposit thin ZnO seed layers on flexible polymer substrates.
For the first time, we show that by following a chemical bath deposition (CBD) process, ZnO nanowires may be grown over gravure-printed ZnO nanoparticle seed layers.Piezo-response force microscopy (PFM) reveals the presence of a homogeneous distribution of Zn-polar domains in the NWs, and, by use of the data, the jumbo tuz de?irmeni piezoelectric coefficient is estimated to be close to 4 pm/V.The overall results demonstrate that gravure printing is an appropriate method to deposit seed layers at a low temperature and to undertake the direct fabrication of flexible piezoelectric transducers that are based on ZnO nanowires.
This work opens the possibility of manufacturing completely vacuum-free solution-based flexible piezoelectric devices.