Abstract
Additive manufacturing has dramatically transformed the design and fabrication of advanced objects. Printed electronics-an additive thin-film processing technology-aims to realize low-cost, large-area electronics, and fabrication of devices with highly customized architectures. Recent advances in printing technology have led to several innovative applications; however, layer-on-layer deposition persists as a challenging issue. Here, the additive manufacturing of functional oxide devices by inkjet printing is presented. Two conditions appear critical for successful layer-on-layer printing: (i) preservation of stable surface properties and (ii) suppression of the material accumulation at the edges of a feature upon drying. The former condition was satisfied by introducing a surface modification layer of a polymer with nanotextured topography, and the latter was satisfied by designing the solvent composition of the ink. The developed process is highly efficient and enables conformal stacking of functional oxide layers according to the user-defined geometry, sequence arrangement, and layer thickness. To prove the effectiveness of this concept, we demonstrate an additive manufacture of all-oxide ferroelectric multilayer capacitors/transducers. Printed multilayer devices offer a significant increase in the capacitance density and the electromechanical voltage response in comparison to the single-layer devices. Further growth in the number of available functional oxide inks will enable arbitrary device architectures with novel functionalities.
Highlights
Inkjet printing is one of the key processing routes for the realization of printed electronics, with applications ranging from solar cells and display technology to micro-electromechanical systems
These results show that inkjet printing has potential in additive manufacturing of advanced functional oxide multilayers
The digital control over the layer-on-layer architecture allows engineering of complex thin-film devices. This combined with the rich physical phenomena present in some metal oxides makes inkjet printing a valuable processing tool in research and industry
Summary
Emerging concepts such as the Internet of Things with the aim of interconnecting everyday objects into a network of smart devices are projected to markedly transform our way of living.[1−3,9] Such trends demand economical and environmentally friendly production of sensors, actuators, data and energy storage devices often on unconventional surfaces and with customized designs.[4,8] Additive manufacturing fulfills these requirements and is a powerful alternative to lithographybased processing.[5,7,10] Several additive techniques for the deposition of functional oxide layers exists, including microcontact printing,[11,12] gravure printing,[13] aerosol printing,[14] and inkjet printing.[15]. The printed pattern is dried and heated to yield a functional oxide By repeating these three steps, the desired multilayer structure can be built. The inks with an optimized solvent ratio produced uniform, flat structures on polycrystalline Pb(Zr, Ti)O3 thin films.[19] these inks undergo evaporation-induced contact line (CL) depinning on smooth and homogeneous surfaces with low pinning affinity. It was Research Article of interest to devise a method for ensuring constant wetting properties and high pinning affinity at every inkjet deposition step. The effectiveness of the approach was demonstrated by fabricating all-printed ferroelectric multilayer capacitors (MLCs) with the functional performance comparable to the state-of-the-art devices
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
