title: Flexible suspended gate organic thin-film transistors for ultra-sensitive pressure detection.
abstract: The utilization of organic devices as pressure-sensing elements in artificial intelligence and healthcare applications represents a fascinating opportunity for the next-generation electronic products. To satisfy the critical requirements of these promising applications, the low-cost construction of large-area ultra-sensitive organic pressure devices with outstanding flexibility is highly desired. Here we present flexible suspended gate organic thin-film transistors (SGOTFTs) as a model platform that enables ultra-sensitive pressure detection. More importantly, the unique device geometry of SGOTFTs allows the fine-tuning of their sensitivity by the suspended gate. An unprecedented sensitivity of 192 kPa(-1), a low limit-of-detection pressure of <0.5 Pa and a short response time of 10 ms were successfully realized, allowing the real-time detection of acoustic waves. These excellent sensing properties of SGOTFTs, together with their advantages of facile large-area fabrication and versatility in detecting various pressure signals, make SGOTFTs a powerful strategy for spatial pressure mapping in practical applications.
authors: 1] Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, CAS, Beijing 100190, China [2] University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Yaping
authors: Y
authors: Zang
authors: 1] Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, CAS, Beijing 100190, China [2] University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Fengjiao
authors: F
authors: Zhang
authors: 1] Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, CAS, Beijing 100190, China [2] University of Chinese Academy of Sciences, Beijing 100049, China.
authors: Dazhen
authors: D
authors: Huang
authors: Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, CAS, Shanghai 200032, China.
authors: Xike
authors: X
authors: Gao
authors: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, CAS, Beijing 100190, China.
authors: Chong-An
authors: CA
authors: Di
authors: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, CAS, Beijing 100190, China.
authors: Daoben
authors: D
authors: Zhu
mesh_terms: D001185:Artificial Intelligence; D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods; D001794:Blood Pressure / Q000502:physiology*; D004867:Equipment Design; D006801:Humans; D057230:Limit of Detection; D011312:Pressure; D013016:Sound; D014173:Transistors, Electronic