title: 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-2at 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.
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Sri Ganesh R
authors.initials: SGR
authors.lastname: Bade
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Xin
authors.initials: X
authors.lastname: Shan
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Phong Tran
authors.initials: PT
authors.lastname: Hoang
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Junqiang
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Thomas
authors.initials: T
authors.lastname: Geske
authors.affiliation: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, 48824, USA.
authors.forename: Le
authors.initials: L
authors.lastname: Cai
authors.affiliation: Department of Materials Science and Engineering, Henry Samueli School of Engineering and Applied Science, University of California, Los Angeles, CA, 90095, USA.
authors.forename: Qibing
authors.initials: Q
authors.lastname: Pei
authors.affiliation: Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI, 48824, USA.
authors.forename: Chuan
authors.initials: C
authors.lastname: Wang
authors.affiliation: Department of Industrial and Manufacturing Engineering, High-Performance Materials Institute, FAMU-FSU College of Engineering, Florida State University, Tallahassee, FL, 32310, USA.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Yu
keywords: composites; light-emitting diodes; perovskites; stretchable