The design and development of intrinsically stretchable all-organic self-powered sensors concurrently perceiving temperature and pressure remain a challenge but deliver an exciting platform to realize environmentally friendly wearable electronics. In this approach, a biomimetic all-organic stretchable energy harvester is designed by a xylitol-added poly(3,4ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS/ Xyl) film as a compatible overlay electrode with polyaniline-reinforced one-dimensional aligned poly(vinylidene fluoride) hybrid electroactive soft nanowires. The gradient of elastic modulus between the electrode and the active nanowire component enables the all-organic device to manifest excellent power-generating performance under external temperature fluctuation (∼3 μW/m2 under ΔT ∼ 92 K) and mechanical force (∼31 μW/cm2 at 30 N). Importantly, the device renders simultaneous energy scavenging of temperature and pressure changes under pressing and stretching conditions (∼20%). The excellent mechanosensitivity (∼100 mV/N), fast response time (∼1 ms), outstanding mechanical and thermal stability, and good temperature resolution <10 K enable the harvester to act as an epidermal sensor, which simultaneously detects and discriminates both subtle pressure and thermal deviations exposed to an epidermis surface. The real-time recording and wireless transferring of physiological signals to a smartphone indicate an effective way to realize remote healthcare monitoring for early intervention.

Original languageEnglish
Pages (from-to)248-259
JournalACS Applied Electronic Materials
Issue number1
Early online date19 Dec 2020
Publication statusPublished - 26 Jan 2021

Bibliographical note

Funding Information:
This work was financially supported by a grant from the Science and Engineering Research Board (EEQ/2018/001130), Government of India. The authors acknowledge the DST, Govt. of India, for awarding the INSPIRE fellowship (IF160559) to Krittish Roy. The authors are thankful to the Newton-Bhabha Ph.D. placement program (DST/INSPIRE/NBHF/2016/20) for supporting S.K.G. Samiran Garain was partially supported by the German Federal Ministry for Economic Affairs and Energy (BMWi, ZIM, 16KN033522).

Publisher Copyright:
© XXXX American Chemical Society

Copyright 2021 Elsevier B.V., All rights reserved.


  • All-organic
  • Energy harvester
  • Healthcare monitoring
  • Piezoelectric
  • Pyroelectric
  • Sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Electrochemistry


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