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.
Nano Lett. 2011 Sep 14;11(9):3881-6. doi: 10.1021/nl202000u. Epub 2011 Aug 1.
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.
本文描述了在橡胶衬底上的微尺度无机发光二极管（LED）可拉伸阵列中使用透明石墨烯互连的制造和设计原则。我们展示了石墨烯在这方面的一些吸引人的特性，包括其能够自发地适应显著的表面形貌，以一种即使对于深的、凹陷的器件区域也能产生有效接触的方式。力学建模揭示了这个过程的基本方面，以及在完全可逆的方式下，同一层石墨烯用于互连的设计，以适应 100%或更高的应变。这些特性与传统的薄膜处理兼容，并可以在透明布局中产生高性能的器件。石墨烯互连具有吸引力的特点，适用于信息显示、生物医学系统和其他环境中的现有和新兴的 LED 应用。
