Ultraflexible organic photonic skin

Tomoyuki Yokota, Peter Zalar, Martin Kaltenbrunner, Hiroaki Jinno, Naoji Matsuhisa, Hiroki Kitanosako, Yutaro Tachibana, Wakako Yukita, Mari Koizumi, Takao Someya

Research output: Contribution to journalArticle

354 Citations (Scopus)

Abstract

Thin-filmelectronics intimately laminated onto the skin imperceptibly equip the human body with electronic components for health-monitoring and information technologies. When electronic devices are worn, the mechanical flexibility and/or stretchability of thin-film devices helps to minimize the stress and discomfort associated with wear because of their conformability and softness. For industrial applications, it is important to fabricate wearable devices using processing methods thatmaximize throughput and minimize cost.We demonstrate ultraflexible and conformable three-color, highly efficient polymer light-emitting diodes (PLEDs) and organic photodetectors (OPDs) to realize optoelectronic skins (oe-skins) that introduce multiple electronic functionalities such as sensing and displays on the surface of human skin. The total thickness of the devices, including the substrate and encapsulation layer, is only 3 mm, which is one order ofmagnitude thinner than the epidermal layer of human skin. By integrating green and red PLEDs with OPDs, we fabricate an ultraflexible reflective pulse oximeter. The device unobtrusively measures the oxygen concentration of blood when laminated on a finger. On-skin seven-segment digital displays and color indicators can visualize data directly on the body.

Original languageEnglish
Article numbere1501856
JournalScience Advances
Volume2
Issue number4
DOIs
Publication statusPublished - 2016 Apr
Externally publishedYes

ASJC Scopus subject areas

  • General

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    Yokota, T., Zalar, P., Kaltenbrunner, M., Jinno, H., Matsuhisa, N., Kitanosako, H., Tachibana, Y., Yukita, W., Koizumi, M., & Someya, T. (2016). Ultraflexible organic photonic skin. Science Advances, 2(4), [e1501856]. https://doi.org/10.1126/sciadv.1501856