Light-insensitive organic solar-powered amplifiers
Abstract
Abstract Wearable bio-sensors using organic electrochemical transistors (OECTs) powered by flexible organic solar cells (OSCs) show promise for electrophysiological monitoring. However, single OECT bio-sensors face unstable outputs due to the limitations of OSCs under low-light conditions and poor energy autonomy. Here, we show a low-power self-powered physiological sensor employing a dual-OECTs configuration, connected in series and powered by the optimized OSCs, which shows more stable signal output and faster response compared to single OECT bio-sensors. Our devices employ the efficient and more stable OSCs to power amplifier by suppressing charge recombination and improving flexibility, thereby facilitating long-term, on-demand use. This integrated device can be attached to human-skin to stably monitor signals, including electrocardiograms, electromyograms and electrooculograms across a wide range of illumination intensities (500 lux-50,000 lux). The design offers a simple architecture for wearable low-power self-powered bio-sensors without external energy supplies/storage, highlighting their potential in real-time disease diagnosis and prevention scenarios.
Article Details
Authors (13)
Qiang Wu
Jiangsu Cancer Hospital Nanjing China
Shijie Wang
Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security/Ministry of Education Key Laboratory for Transboundary Eco-Security of Southwest China, Institute of International Rivers and Eco-Security, Yunnan University
Wei Gao
Zeng Chen
Jun Tao
Xinyue Song
Sen Yan
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, Department of Chemistry, College of Chemistry and Chemical Engineering
Haiming Zhu
Zhejiang Key Laboratory of Excited-State Energy Conversion and Energy Storage, Department of Chemistry, Institute of Fundamental and Transdisciplinary Research
Ke Zhou
Long Jiang
Xiaomin Xu
Curtin Centre for Advanced Energy Materials and Technologies (CAEMT), Western Australian School of Mines (WASM)
Alex K.-Y. Jen
Wei Ma