Kim Soo Jin, Kim Hyoungjun, Ahn Jongtae, Hwang Do Kyung, Ju Hyunsu, Park Min-Chul, Yang Hoichang, Kim Se Hyun, Jang Ho Won, Lim Jung Ah
Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
Adv Mater. 2019 Jun;31(23):e1900564. doi: 10.1002/adma.201900564. Epub 2019 Apr 12.
Herein, a unique device architecture is proposed for fibrous organic transistors based on a double-stranded assembly of electrode microfibers for electronic textile applications. A key feature of this work is that the semiconductor channel of the fiber transistor comprises a twist assembly of the source and drain electrode microfibers that are coated by an organic semiconductor. This architecture not only allows the channel dimension of the device to be readily controlled by varying the thickness of the semiconductor layer and the twisted length of the two electrode microfibers, but also passivates the device without affecting interconnections with other electrical components. It is found that the control of crystalline nanostructure of the semiconductor layer is critical for improving both the production yield of the device and the charge-carrier transport in the device. The resulting fibrous organic transistors show a high output current of over -5 mA at a low operation voltage of -1.3 V and a good on/off current ratio of 10 . The device performance is maintained after repeated bending deformation and washing with a strong detergent solution. Application of the fibrous organic transistors to switch current-driven LED devices and detection of electrocardiography signals from a human body are demonstrated.
在此，我们提出了一种独特的器件架构，用于基于电极微纤维双链组装的纤维状有机晶体管，以用于电子纺织品应用。这项工作的一个关键特征是，纤维晶体管的半导体沟道包括由有机半导体包覆的源极和漏极微纤维的扭曲组装。这种架构不仅允许通过改变半导体层的厚度和两个电极微纤维的扭曲长度来轻松控制器件的沟道尺寸，还能使器件钝化，而不影响与其他电气组件的互连。研究发现，控制半导体层的晶体纳米结构对于提高器件的生产良率和器件中的电荷载流子传输至关重要。所得的纤维状有机晶体管在 -1.3 V 的低工作电压下显示出超过 -5 mA 的高输出电流和 10 的良好开/关电流比。在反复弯曲变形并用强洗涤剂溶液洗涤后，器件性能得以保持。展示了纤维状有机晶体管在切换电流驱动的 LED 器件以及检测人体心电图信号方面的应用。
