Department of Chemical Engineering and Center for Advanced Soft Electronics, Pohang University of Science and Technology, 77 Cheongam-Ro, Nam-Gu, Pohang, 37673, South Korea.
SKKU Advanced Institute of Nanotechnology (SAINT)and School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do, 16419, South Korea.
Adv Mater. 2018 Jun;30(25):e1706480. doi: 10.1002/adma.201706480. Epub 2018 Apr 30.
Increasing the mechanical durability of large-area polycrystalline single-atom-thick materials is a necessary step toward the development of practical and reliable soft electronics based on these materials. Here, it is shown that the surface assembly of organosilane by weak epitaxy forms nanometer-thick organic patches on a monolayer graphene surface and dramatically increases the material's resistance to harsh postprocessing environments, thereby increasing the number of ways in which graphene can be processed. The nanopatched graphene with the improved mechanical durability enables stable operation when used as transparent electrodes of wearable strain sensors. Also, the nanopatched graphene applied as an electrode modulates the molecular orientation of deposited organic semiconductor layers, and yields favorable nominal charge injection for organic transistors. These results demonstrate the potential for use of self-assembled organic nanopatches in graphene-based soft electronics.
提高大面积多晶单原子层材料的机械耐久性是开发基于这些材料的实用可靠软电子产品的必要步骤。在这里，研究表明，通过弱外延在单层石墨烯表面上组装有机硅烷形成纳米厚的有机补丁，显著提高了材料对恶劣后处理环境的抵抗力，从而增加了石墨烯的处理方式。具有改进的机械耐久性的纳米补丁石墨烯可在用作可穿戴应变传感器的透明电极时实现稳定运行。此外，用作电极的纳米补丁石墨烯调节了沉积的有机半导体层的分子取向，并为有机晶体管提供了有利的标称电荷注入。这些结果表明，自组装有机纳米补丁在基于石墨烯的软电子产品中有应用潜力。
