Choi Giheon, Oh Seungtaek, Kim Cheulhwan, Lee Kanghuck, An Tae Kyu, Lee Jihoon, Jang Yunseok, Lee Hwa Sung
Department of Materials Science and Chemical Engineering, Hanyang University, Ansan 15588, Republic of Korea.
Department of IT Convergence, Korea National University of Transportation, Chungju 27469, Republic of Korea.
ACS Appl Mater Interfaces. 2020 Jul 22;12(29):32979-32986. doi: 10.1021/acsami.0c04739. Epub 2020 Jul 8.
With the emergence of wearable human interface technologies, new applications based on stretchable electronics, such as skin-attached sensors or wearable displays, must be developed. Difficulties associated with developing electronic components with the high stretchabilities required for such applications have restricted the range of appearance and utilization of cost- or process-efficient stretchable electronics. Herein, we present omnidirectionally stretchable wrinkled transistors having a shape that replicates human skin, which operates stably on deformable objects or complex surfaces. Our device offers excellent mechanical and electrical stabilities for preserving relative field-effect mobilities within a standard deviation of nearly 5.6%, under a strain level of up to 62%. Even after 10 000 cycles of stretching to 60% strain, the devices exhibited stable operation with little performance changes. These results indicate that the devices display stretchability properties superior to those of organic transistor arrays by utilizing existing nonstretchable device components.
随着可穿戴人机交互技术的出现，必须开发基于可拉伸电子器件的新应用，如皮肤附着传感器或可穿戴显示器。开发此类应用所需的具有高拉伸性的电子元件所面临的困难，限制了具有成本效益或工艺效益的可拉伸电子器件的外观和应用范围。在此，我们展示了具有模仿人类皮肤形状的全向可拉伸褶皱晶体管，其可在可变形物体或复杂表面上稳定运行。我们的器件在高达62%的应变水平下，具有出色的机械和电气稳定性，可将相对场效应迁移率保持在近5.6%的标准偏差范围内。即使在10000次拉伸至60%应变的循环后，器件仍表现出稳定的运行状态，性能变化很小。这些结果表明，通过利用现有的不可拉伸器件组件，这些器件展现出优于有机晶体管阵列的拉伸性能。
