@article{Jiang2023, 
author = {Xingyu Jiang and Zhiqiang Liang and Miao Wu and Jie Lu and Cheng Shi and Qi Wang and Zi Wang and Zhen Jin and Lin Jiang and Lizhen Huang and Lifeng Chi},
title = {High-performance organic electrochemical transistors gated with 3D-printed graphene oxide electrodes},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {11},
pages = {12689-12696},
keywords = {graphene, electrocardiogram, organic electrochemical transistors, three-dimensional (3D)-printed, top electrodes},
url = {https://www.sciopen.com/article/10.1007/s12274-023-6067-2},
doi = {10.1007/s12274-023-6067-2},
abstract = {Organic electrochemical transistors (OECTs) have garnered significant interest due to their ability to facilitate both ionic and electronic transport. A large proportion of research efforts thus far have focused on investigating high-performance materials that can serve as mixed ion doping and charge transport layers. However, relatively less attention has been given to the gate-electrode materials, which play a critical role in controlling operational voltage, redox processes, and stability, especially in the context of semiconductor-based OECTs working in accumulation mode. Moreover, the demand for planarity and flexibility in modern bioelectronic devices presents significant challenges for the commonly used Ag/AgCl electrodes in OECTs. Herein, we report the construction of high-performance accumulation-mode OECTs by utilizing a gate electrode made of three-dimensional (3D)-printed graphene oxide. The 3D-printed graphene oxide electrode incorporating one-dimensional (1D) carbon nanotubes, is directly printed using an aqueous-based ink and showcases exceptional mechanical flexibility and porosity properties, enabling high-throughput preparation for both top gates and integrated planar architecture, as well as fast ion/charge transport. OECTs with high performance comparable to that of Ag/AgCl-gated OECTs are thus achieved and present promising feasibility for electrocardiograph (ECG) signal recording. This provides a promising choice for the application of flexible bioelectronics in medical care and neurological recording.}
}