Won Sejeong, Jang Jae-Won, Choi Hyung-Jin, Kim Chang-Hyun, Lee Sang Bong, Hwangbo Yun, Kim Kwang-Seop, Yoon Soon-Gil, Lee Hak-Joo, Kim Jae-Hyun, Lee Soon-Bok
Department of Nanomechanics, Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery & Materials (KIMM), 156 Gajungbuk-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
Nanoscale. 2016 Mar 7;8(9):4961-8. doi: 10.1039/c5nr05412e.
Oxide materials have recently attracted much research attention for applications in flexible and stretchable electronics due to their excellent electrical properties and their compatibility with established silicon semiconductor processes. Their widespread uptake has been hindered, however, by the intrinsic brittleness and low stretchability. Here we investigate the use of a graphene meta-interface to enhance the electromechanical stretchability of fragile oxide layers. Electromechanical tensile tests of indium tin oxide (ITO) layers on polymer substrates were carried out with in situ observations using an optical microscope. It was found that the graphene meta-interface reduced the strain transfer between the ITO layer and the substrate, and this behavior was well described using a shear lag model. The graphene meta-interface provides a novel pathway for realizing flexible and stretchable electronic applications based on oxide layers.
由于其优异的电学性能以及与成熟的硅半导体工艺的兼容性，氧化物材料最近在柔性和可拉伸电子器件应用方面引起了广泛的研究关注。然而，其固有的脆性和低拉伸性阻碍了它们的广泛应用。在此，我们研究了使用石墨烯元界面来增强易碎氧化物层的机电拉伸性。利用光学显微镜进行原位观察，对聚合物基板上的氧化铟锡（ITO）层进行了机电拉伸试验。结果发现，石墨烯元界面减少了ITO层与基板之间的应变传递，并且这种行为可以用剪切滞后模型很好地描述。石墨烯元界面为基于氧化物层实现柔性和可拉伸电子应用提供了一条新途径。
