Self-powered ultraflexible photonic skin for continuous bio-signal detection via air-operation-stable polymer light-emitting diodes

被引：0

作者：

Hiroaki Jinno

Tomoyuki Yokota

Mari Koizumi

Wakako Yukita

Masahiko Saito

Itaru Osaka

Kenjiro Fukuda

Takao Someya

机构：

[1] The University of Tokyo,Electrical and Electronic Engineering and Information Systems

[2] RIKEN,Center for Emergent Matter Science

[3] Hiroshima University,Department of Applied Chemistry, Graduate School of Engineering

[4] RIKEN,Thin

[5] Nanomaterials Engineering Research Group,film Device Laboratory

[6] ETH zürich,undefined

来源：

Nature Communications | / 12卷

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ultraflexible optical devices have been used extensively in next-generation wearable electronics owing to their excellent conformability to human skins. Long-term health monitoring also requires the integration of ultraflexible optical devices with an energy-harvesting power source; to make devices self-powered. However, system-level integration of ultraflexible optical sensors with power sources is challenging because of insufficient air operational stability of ultraflexible polymer light-emitting diodes. Here we develop an ultraflexible self-powered organic optical system for photoplethysmogram monitoring by combining air-operation-stable polymer light-emitting diodes, organic solar cells, and organic photodetectors. Adopting an inverted structure and a doped polyethylenimine ethoxylated layer, ultraflexible polymer light-emitting diodes retain 70% of the initial luminance even after 11.3 h of operation under air. Also, integrated optical sensors exhibit a high linearity with the light intensity exponent of 0.98 by polymer light-emitting diode. Such self-powered, ultraflexible photoplethysmogram sensors perform monitoring of blood pulse signals as 77 beats per minute.

引用