Materials Science

Graphene : Material, Process and Devices
Jong-Hyun Ahn, Yonsei University, Seoul, Korea

With the emergence of unusual format electronics such as flexible and wearable devices, an effort has been made to integrate devices with various functions in smart clothing for providing enhanced flexibility and convenience for the users. Thus, many experts believe that an important future in electronics is with systems that avoid the rigid, brittle and planar nature of existing classes of electronics, to enable new applications. However, it is very difficult to accomplish such electronics with conventional electronic materials. Graphene, the thinnest elastic material, has superb electronic properties that make it a promising host for device applications. In particular, graphene has an extremely good mechanical property, offering a great opportunity to flexible and stretchable electronics that should maintain a stable operation under a high strain. The recent advances in large-scale synthesis of graphene films by chemical vapour deposition are expected to enable various macroscopic applications such as semiconducting and transparent conducting films useful for flexible and stretchable electronics. In this talk, we present a large area growth of high-quality graphene films, transfer printing onto arbitrary substrates, and integration method, which can provide the application possibility of graphene films for flexible and stretchable electronics including OLED lighting, strain sensor, transistor and energy harvesting devices.

Reference

1. S.H. Bae, et al., "Graphene-P(VDF-TrFE) multilayer film for flexible applications", ACS Nano, 7(4), 3130 (2013)

2. S.K. Lee, et al., "All Graphene based Thin Film Transistors on Flexible Plastic Substrates", Nano Lett., 12(7), 3472 (2012)

3. Sukang Bae, et al., "Roll-to-roll production of 30-inch graphene film for Transparent electrodes", Nat. Nanotech., 5, 574 (2010)

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Materials Science

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