Inkjet printing of thick-film capacitors based on organic-inorganic composites

在第一个项目成功开发陶瓷/聚合物复合油墨系统的基础上，将在后续项目中研究优化介电性能和电容的不同方法。因此，将较大的陶瓷颗粒用于油墨，以确定其对复合材料介电常数的影响。除了提高复合材料的介电常数外，印刷电容器的电容还应在后续项目中通过更薄的层和多层布局来增加。为了实现这些方法，将使用表面改性的陶瓷颗粒。通过用可交联端基团修饰陶瓷颗粒，可以在沉积后进行交联化反应。首先将考察改性陶瓷颗粒、可交联性有机分子和自由基引发剂对固化行为的影响。然后基于这些结果，将制备可打印的油墨并检查其干燥行为。在喷墨打印过程中采用这种创新的方法，最终应该能够生产更薄的层以及制造印刷的多层电容器。

Based on the successful development of a ceramic/polymer composite ink system within the first project, different approaches to optimize the dielectric properties and the capacitance will be investigated in a follow-up project. Therefore, larger ceramic particles will be used for the inks to determine the effects in the permittivity of the composite. In addition to increasing the permittivity of the composite, the capacitance of printed capacitors should be increased by thinner layers and multilayer layouts in the follow-up project. For the realization of those approaches surface-modified ceramic particles will be used. By modifying the ceramic particles with crosslinkable end groups a crosslinking reaction after the deposition is possible. The influence of modified ceramic particles, cross-linkable organic molecules and free radical initiators on the curing behavior will be examined offside of the printing process first. Then based on these results, printable inks will be prepared and the drying behavior examined. The implementation of this innovative approach to the inkjet printing process should finally enable both the production of thinner layers as well as the fabrication of printed multilayer capacitors.