title: Selective catalytic burning of graphene by SiOx layer depletion.
abstract: We report catalytic decomposition of few-layer graphene on an Au/SiOx/Si surface wherein oxygen is supplied by dissociation of the native SiOx layer at a relatively low temperature of 400 °C. The detailed chemical evolution of the graphene covered SiOx/Si surface with and without gold during the catalytic process is investigated using a spatially resolved photoelectron emission method. The oxygen atoms from the native SiOx layer activate the gold-mediated catalytic decomposition of the entire graphene layer, resulting in the formation of direct contact between the Au and the Si substrate. The notably low contact resistivity found in this system suggests that the catalytic depletion of a SiOx layer could realize a new way to micromanufacture high-quality electrical contact.
authors: Pohang Accelerator Laboratory, Pohang, Gyeongbuk 790-784, Korea. johnet97@postech.ac.kr.
authors: Kyoung-Jae
authors: KJ
authors: Lee
authors: Kyuwook
authors: K
authors: Ihm
authors: Yogesh
authors: Y
authors: Kumar
authors: Jaeyoon
authors: J
authors: Baik
authors: Mihyun
authors: M
authors: Yang
authors: Hyun-Joon
authors: HJ
authors: Shin
authors: Tai-Hee
authors: TH
authors: Kang
authors: Sukmin
authors: S
authors: Chung
authors: Byung Hee
authors: BH
authors: Hong