Highly stretchable and contact-responsive light-emitting diodes based on MAPbBr3–PEO composite film

Hyun Min Kim, Yun Cheol Kim, Hee Ju An, Jae Min Myoung

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Highly stretchable, deformable, and contact-responsive light-emitting diodes (LEDs) were fabricated using a methylammonium lead tribromide (MAPbBr3)–poly(ethylene oxide) (PEO) composite film as light-emissive layer. The polymer matrix formed through the mixing of PEO induced stretchability to the composite films, which were mechanically robust. The stretchable LEDs emitted pure green light at 538 nm and exhibited outstanding performance of a low turn-on voltage of about 2.5 V, maximum luminance of 4257 cd m−2, and current efficiency of 1.77 cd A−1. Furthermore, the device can be stretched up to tensile strain of 70% without failure and can stably operate after 1000 repetitive stretching cycles with no significant degradation of the device performance.

Original languageEnglish
Article number153360
JournalJournal of Alloys and Compounds
Publication statusPublished - 2020 Apr 5

Bibliographical note

Funding Information:
This work was supported by Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC-MA1901-01 . Appendix A

Publisher Copyright:
© 2019 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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