High‐Permittivity Polysiloxanes for Bright, Stretchable Electroluminescent Devices

Abstract: Stretchable alternating current electroluminescent (ACEL) devices have a bright future in wearable electronics and soft robotics. Still, their market application is hindered by high operating voltages. The voltage can be reduced by increasing the relative permittivity of the dielectric elastomer in the emissive layer. Here, a fluorine‐free high‐permittivity silicone elastomer functionalized with cyanopropyl side groups, specially designed for application in stretchable ACEL devices, is introduced. The polar silicone elastomer exhibits excellent mechanical properties and a dielectric permittivity four times higher than commercial PDMS. Light‐emitting devices based on the polar elastomer reach 7.5 times higher maximum luminance at the same electric field than PDMS‐based devices and turn on at a 50% lower electric field. Besides, the polar elastomer‐based devices perform better than all materials tested in literature in achieving high luminance at low electric fields. Stretchable ACEL devices are built from the polar elastomer which shows bright and uniform light emission and can be operated up to 50% strain. The high‐permittivity silicones are promising materials for stretchable ACEL devices and can help their breakthrough to market application by overcoming the drawback of high operating voltages.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
High‐Permittivity Polysiloxanes for Bright, Stretchable Electroluminescent Devices ; day:11 ; month:04 ; year:2024 ; extent:9
Advanced optical materials ; (11.04.2024) (gesamt 9)

Creator
von Szczepanski, Johannes
Wolf, Jana
Hu, Wei‐Hsu
Schneider, René
Danner, Patrick M.
Kupferschmid, André
Jenatsch, Sandra
Hany, Roland
Nüesch, Frank A.
Opris, Dorina

DOI
10.1002/adom.202400132
URN
urn:nbn:de:101:1-2024041115051455897440
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 11:03 AM CEST

Data provider

This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.

Associated

  • von Szczepanski, Johannes
  • Wolf, Jana
  • Hu, Wei‐Hsu
  • Schneider, René
  • Danner, Patrick M.
  • Kupferschmid, André
  • Jenatsch, Sandra
  • Hany, Roland
  • Nüesch, Frank A.
  • Opris, Dorina

Other Objects (12)