title: Stretchable, transparent graphene interconnects for arrays of microscale inorganic light emitting diodes on rubber substrates.
abstract: This paper describes the fabrication and design principles for using transparent graphene interconnects in stretchable arrays of microscale inorganic light emitting diodes (LEDs) on rubber substrates. We demonstrate several appealing properties of graphene for this purpose, including its ability to spontaneously conform to significant surface topography, in a manner that yields effective contacts even to deep, recessed device regions. Mechanics modeling reveals the fundamental aspects of this process, as well as the use of the same layers of graphene for interconnects designed to accommodate strains of 100% or more, in a completely reversible fashion. These attributes are compatible with conventional thin film processing and can yield high-performance devices in transparent layouts. Graphene interconnects possess attractive features for both existing and emerging applications of LEDs in information display, biomedical systems, and other environments.
authors.affiliation: Department of Materials Science and Engineering, Beckman Institute for Advanced Science and Technology and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
authors.forename: Rak-Hwan
authors.initials: RH
authors.lastname: Kim
authors.forename: Myung-Ho
authors.initials: MH
authors.lastname: Bae
authors.forename: Dae Gon
authors.initials: DG
authors.lastname: Kim
authors.forename: Huanyu
authors.initials: H
authors.lastname: Cheng
authors.forename: Bong Hoon
authors.initials: BH
authors.lastname: Kim
authors.forename: Dae-Hyeong
authors.initials: DH
authors.lastname: Kim
authors.forename: Ming
authors.initials: M
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Wu
authors.forename: Frank
authors.initials: F
authors.lastname: Du
authors.forename: Hoon-Sik
authors.initials: HS
authors.lastname: Kim
authors.forename: Stanley
authors.initials: S
authors.lastname: Kim
authors.forename: David
authors.initials: D
authors.lastname: Estrada
authors.forename: Suck Won
authors.initials: SW
authors.lastname: Hong
authors.forename: Yonggang
authors.initials: Y
authors.lastname: Huang
authors.forename: Eric
authors.initials: E
authors.lastname: Pop
authors.forename: John A
authors.initials: JA
authors.lastname: Rogers
mesh_terms: D000268:Adhesiveness; D006108:Graphite / Q000737:chemistry*; D008027:Light; D008855:Microscopy, Electron, Scanning / Q000379:methods; D008962:Models, Theoretical; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D012408:Rubber; D012822:Silicon Dioxide / Q000737:chemistry; D013059:Spectrum Analysis, Raman / Q000379:methods; D013499:Surface Properties
chemical_list: D012822:Silicon Dioxide; D006108:Graphite; D012408:Rubber