Light-Emitting Polymer Blended with Elastomers for Stretchable Polymer Light-Emitting Diodes

Kun Hoo Jeon, Jin Woo Park

Research output: Contribution to journalArticlepeer-review


Intrinsically stretchable light-emitting diodes (LEDs) will be critical components in future stretchable electronics. However, limited research has been conducted on stretchable electroluminescent (EL) layers for LED devices. Blending conjugated polymers (CPs) with an elastomer has been a simple and effective method enabling widespread use of stretchable polymer semiconductors in stretchable field-effect transistors (FETs). In this study, we adopted the concept of blending elastomers into CPs for use in stretchable polymer LEDs (PLEDs). By blending light-emitting polymers prepared from polyphenylenevinylene (PPV) derivatives with thermoplastic polystyrene-block-polybutadiene-block-polystyrene (SBS) elastomers, a stretchable emission layer (EML) was fabricated, and its mechanical, electrical, and morphological properties were studied. The blended film was stretched up to 60% before vertical cracking occurred, and it maintained its pristine electrical properties. Finally, stretchable PLEDs were fabricated with the use of stretchable EMLs, and this showed that 50% of the maximum luminance was maintained upon stretching up to 60%.

Original languageEnglish
Pages (from-to)8311-8320
Number of pages10
Issue number18
Publication statusPublished - 2022 Sept 27

Bibliographical note

Funding Information:
This work was supported by the Korean Medical Device Development Fund grant funded by the Korean government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 1711138212, KMDF_PR_20200901_0116) and the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (Nos. 2021R1A2C2004297 and NRF-2021R1A4A1032129).

Publisher Copyright:
© 2022 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry


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