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.

SUBMITTER: Zang Y 

PROVIDER: S-EPMC4366495 | biostudies-literature | 2015 Mar

REPOSITORIES: biostudies-literature