Sub-thermionic, ultra-high-gain organic transistors and circuits

Zhongzhong Luo, Boyu Peng, Junpeng Zeng, Zhihao Yu, Ying Zhao, Jun Xie, Rongfang Lan, Zhong Ma, Lijia Pan, Ke Cao, Yang Lu, Daowei He, Hongkai Ning, Wanqing Meng, Yang Yang, Xiaoqing Chen, Weisheng Li, Jiawei Wang, Danfeng Pan, Xuecou Tu, Wenxing Huo, Xian Huang, Dongquan Shi, Ling Li, Ming Liu, Yi Shi, Xue Feng, Paddy K. L. Chan () and Xinran Wang ()
Additional contact information
Zhongzhong Luo: Nanjing University
Boyu Peng: The University of Hongkong, Pok Fu Lam Road
Junpeng Zeng: Nanjing University
Zhihao Yu: Nanjing University
Ying Zhao: Institute of Microelectronics, Chinese Academy of Sciences
Jun Xie: The Affiliated Hospital of Nanjing University Medical School
Rongfang Lan: The Affiliated Hospital of Nanjing University Medical School
Zhong Ma: Nanjing University
Lijia Pan: Nanjing University
Ke Cao: City University of Hong Kong, Kowloon
Yang Lu: City University of Hong Kong, Kowloon
Daowei He: Nanjing University
Hongkai Ning: Nanjing University
Wanqing Meng: Nanjing University
Yang Yang: Nanjing University
Xiaoqing Chen: Nanjing University
Weisheng Li: Nanjing University
Jiawei Wang: Institute of Microelectronics, Chinese Academy of Sciences
Danfeng Pan: Nanjing University
Xuecou Tu: Nanjing University
Wenxing Huo: Tianjin University
Xian Huang: Tianjin University
Dongquan Shi: The Affiliated Hospital of Nanjing University Medical School
Ling Li: Institute of Microelectronics, Chinese Academy of Sciences
Ming Liu: Institute of Microelectronics, Chinese Academy of Sciences
Yi Shi: Nanjing University
Xue Feng: Tsinghua University
Paddy K. L. Chan: The University of Hongkong, Pok Fu Lam Road
Xinran Wang: Nanjing University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract The development of organic thin-film transistors (OTFTs) with low power consumption and high gain will advance many flexible electronics. Here, by combining solution-processed monolayer organic crystal, ferroelectric HfZrOx gating and van der Waals fabrication, we realize flexible OTFTs that simultaneously deliver high transconductance and sub-60 mV/dec switching, under one-volt operating voltage. The overall optimization of transconductance, subthreshold swing and output resistance leads to transistor intrinsic gain and amplifier voltage gain over 5.3 × 104 and 1.1 × 104, respectively, which outperform existing technologies using organics, oxides and low-dimensional nanomaterials. We further demonstrate battery-powered, integrated wearable electrocardiogram (ECG) and pulse sensors that can amplify human physiological signal by 900 times with high fidelity. The sensors are capable of detecting weak ECG waves (undetectable even by clinical equipment) and diagnosing arrhythmia and atrial fibrillation. Our sub-thermionic OTFT is promising for battery/wireless powered yet performance demanding applications such as electronic skins and radio-frequency identification tags, among many others.

Date: 2021
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DOI: 10.1038/s41467-021-22192-2

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