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Related Experiment Video

Updated: May 22, 2026

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
06:21

A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles

Published on: March 13, 2017

Silk Fibroin Ionotronics for High-Performance Wearable Perovskite LEDs.

Jiawei Hong1,2,3, Zhongkai Yu4, Weidong Tang1

  • 1State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, ZJU-UIUC Institute, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou 310027, China.

ACS Nano
|May 21, 2026
PubMed
Summary

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Researchers developed conductive silk fibroin ionotronics by adding lithium salts, enhancing conductivity with PEDOT:PSS. This breakthrough enables flexible bioelectronic devices for applications like smart wearables and advanced displays.

Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Organic Electronics

Background:

  • Hydrogels are promising for biointerfaces due to tunable properties.
  • Current hydrogels are typically insulators, limiting electronic applications.
  • Silk fibroin is biocompatible and flexible but nonconductive.

Purpose of the Study:

  • To develop conductive hydrogels from silk fibroin for bioelectronic applications.
  • To enhance the conductivity and performance of silk fibroin-based materials.
  • To demonstrate the utility of these materials in electronic devices.

Main Methods:

  • Incorporation of lithium ionic salts into silk fibroin to create ionotronics.
  • Formation of a hybrid interface with PEDOT:PSS to boost conductivity.
Keywords:
hydrogelionotronicsperovskite light-emitting diodes (PeLEDs)silk fibroinwearable electronics

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  • Integration of the conductive interface for charge injection in perovskite LEDs.
  • Fabrication of a bioelectronic device for photoplethysmography (PPG) signal acquisition.

    • Main Results:

    • Achieved conductivity >12.4 S cm-1 in silk fibroin ionotronics.
    • Demonstrated high transparency, flexibility, and biocompatibility.
    • Perovskite LEDs exhibited a brightness of 9,724 cd m-2 and current efficiency of 19.6 cd A-1.
    • Successfully developed a flexible bioelectronic device for PPG sensing.

    Conclusions:

    • Silk fibroin can be transformed into conductive ionotronics with enhanced properties.
    • The hybrid ionic interface enables high-performance optoelectronic devices.
    • These advancements pave the way for intelligent human-machine interaction and smart wearable systems.