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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

81 Scopus Citations
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  • Zhongzhong Luo
  • Boyu Peng
  • Junpeng Zeng
  • Zhihao Yu
  • Ying Zhao
  • Jun Xie
  • Rongfang Lan
  • Zhong Ma
  • Lijia Pan
  • 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
  • Xinran Wang

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Original languageEnglish
Article number1928
Journal / PublicationNature Communications
Online published26 Mar 2021
Publication statusPublished - 2021



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.

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Citation Format(s)

Sub-thermionic, ultra-high-gain organic transistors and circuits. / Luo, Zhongzhong; Peng, Boyu; Zeng, Junpeng et al.
In: Nature Communications, Vol. 12, 1928, 2021.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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