Stretchable Light‐Emitting Diodes with Organometal‐Halide‐Perovskite–Polymer Composite Emitters
Abstract
Intrinsically stretchable light‐emitting diodes (LEDs) are demonstrated using organometal‐halide‐perovskite/polymer composite emitters. The polymer matrix serves as a microscale elastic connector for the rigid and brittle perovskite and induces stretchability to the composite emissive layers. The stretchable LEDs consist of poly(ethylene oxide)‐modified poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate as a transparent and stretchable anode, a perovskite/polymer composite emissive layer, and eutectic indium–gallium as the cathode. The devices exhibit a turn‐on voltage of 2.4 V, and a maximum luminance intensity of 15 960 cd m−2 at 8.5 V. Such performance far exceeds all reported intrinsically stretchable LEDs based on electroluminescent polymers. The stretchable perovskite LEDs are mechanically robust and can be reversibly stretched up to 40% strain for 100 cycles without failure.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 07, 2017
- Source ID
- 10.1002/adma.201607053
Entities
People
- Chuan Wang
- Junqiang Li
- Le Cai
- Phong Tran Hoang
- Qibing Pei
- Sri Ganesh R. Bade
- Thomas Geske
- Xin Shan
- Zhibin Yu
Organizations
- Air Force Office of Scientific Research
- Division of Electrical, Communications & Cyber Systems
- Michigan State University
- University of California, Los Angeles