Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing
This paper shows a straightforward method for printing multilayer composite capacitors with three dielectric layers on flexible substrates. As known from multilayer ceramic chip capacitors (MLCCs), it is possible to create a parallel connection of the layers without enlarging the needed area. Hence,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Nanomaterials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-4991/10/11/2302 |
| _version_ | 1827701771715215360 |
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| author | Timo Reinheimer Viktoria Baumann Joachim R. Binder |
| author_facet | Timo Reinheimer Viktoria Baumann Joachim R. Binder |
| author_sort | Timo Reinheimer |
| collection | DOAJ |
| description | This paper shows a straightforward method for printing multilayer composite capacitors with three dielectric layers on flexible substrates. As known from multilayer ceramic chip capacitors (MLCCs), it is possible to create a parallel connection of the layers without enlarging the needed area. Hence, the overall capacitance is increased, as the capacitances of the single dielectric layers add up. To realize printed capacitors, a special ceramic/polymer composite ink is used. The ink consists of surface-modified Ba<sub>0.6</sub>Sr<sub>0.4</sub>TiO<sub>3</sub> (BST), a polymeric crosslinking agent and a thermal initiator, which allows an immediate polymerization of the ink, leading to very homogenous layers. The dielectric behavior of the capacitors is examined for each completed dielectric layer (via impedance spectroscopy) so that the changes with every following layer can be analyzed. It is demonstrated that the concept works, and capacitors with up to 3420 pF were realized (permittivity of ~40). However, it was also shown that the biggest challenge is the printing of the needed silver electrodes. They show a strong coffee stain effect, leading to thicker edge areas, which are difficult to overprint. Only with the help of printed supporting structures was it possible to lower the failure rate when printing thin dielectric layers. |
| first_indexed | 2024-03-10T14:41:08Z |
| format | Article |
| id | doaj.art-960f3ad6945146da8788c58a974ad144 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T14:41:08Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-960f3ad6945146da8788c58a974ad1442023-11-20T21:46:30ZengMDPI AGNanomaterials2079-49912020-11-011011230210.3390/nano10112302Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet PrintingTimo Reinheimer0Viktoria Baumann1Joachim R. Binder2Institute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, GermanyThis paper shows a straightforward method for printing multilayer composite capacitors with three dielectric layers on flexible substrates. As known from multilayer ceramic chip capacitors (MLCCs), it is possible to create a parallel connection of the layers without enlarging the needed area. Hence, the overall capacitance is increased, as the capacitances of the single dielectric layers add up. To realize printed capacitors, a special ceramic/polymer composite ink is used. The ink consists of surface-modified Ba<sub>0.6</sub>Sr<sub>0.4</sub>TiO<sub>3</sub> (BST), a polymeric crosslinking agent and a thermal initiator, which allows an immediate polymerization of the ink, leading to very homogenous layers. The dielectric behavior of the capacitors is examined for each completed dielectric layer (via impedance spectroscopy) so that the changes with every following layer can be analyzed. It is demonstrated that the concept works, and capacitors with up to 3420 pF were realized (permittivity of ~40). However, it was also shown that the biggest challenge is the printing of the needed silver electrodes. They show a strong coffee stain effect, leading to thicker edge areas, which are difficult to overprint. Only with the help of printed supporting structures was it possible to lower the failure rate when printing thin dielectric layers.https://www.mdpi.com/2079-4991/10/11/2302inkjet printingprinted capacitorsceramic/polymer compositesmultilayer |
| spellingShingle | Timo Reinheimer Viktoria Baumann Joachim R. Binder Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing Nanomaterials inkjet printing printed capacitors ceramic/polymer composites multilayer |
| title | Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing |
| title_full | Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing |
| title_fullStr | Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing |
| title_full_unstemmed | Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing |
| title_short | Fabrication of Flexible Multilayer Composite Capacitors Using Inkjet Printing |
| title_sort | fabrication of flexible multilayer composite capacitors using inkjet printing |
| topic | inkjet printing printed capacitors ceramic/polymer composites multilayer |
| url | https://www.mdpi.com/2079-4991/10/11/2302 |
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