Kim, Byoung-Joon Haas, Thomas Friederich, Andreas Lee, Ji-Hoon Nam, Dae-Hyun Binder, Joachim R. Bauer, Werner Choi, In-Suk Joo, Young-Chang Gruber, Patric A. Kraft, Oliver 2024-01-20T10:03:44Z 2024-01-20T10:03:44Z 2021-09-05 2014-03-28 0957-4484 https://pubs.kist.re.kr/handle/201004/126978 The development of highly conductive metallic electrodes with long-term reliability is in great demand for real industrialization of flexible electronics, which undergo repeated mechanical deformation during service. In the case of vacuum-deposited metallic electrodes, adequate conductivity is provided, but it degrades gradually during cyclic mechanical deformation. Here, we demonstrate a long-term reliable Ag electrode by inkjet printing. The electrical conductivity and the mechanical reliability during cyclic bending are investigated with respect to the nanoporous microstructure caused by post heat treatment, and are compared to those of evaporated Ag films of the same thickness. It is shown that there is an optimized nanoporous microstructure for inkjet-printed Ag films, which provides a high conductivity and improved reliability. It is argued that the nanoporous microstructure ensures connectivity within the particle network and at the same time reduces plastic deformation and the formation of fatigue damage. This concept provides a new guideline to develop an efficient method for highly conductive and reliable metallic electrodes for flexible electronics. English IOP PUBLISHING LTD NANOPARTICULATE FILMS THIN BEHAVIOR COPPER PERFORMANCE BATTERY Improving mechanical fatigue resistance by optimizing the nanoporous structure of inkjet-printed Ag electrodes for flexible devices Article 10.1088/0957-4484/25/12/125706 1 NANOTECHNOLOGY, v.25, no.12 NANOTECHNOLOGY 25 12 scie scopus 000332669300019 2-s2.0-84896846412 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article NANOPARTICULATE FILMS THIN BEHAVIOR COPPER PERFORMANCE BATTERY inkjet printing fatigue lifetime flexible electrode nanoporous