BROWSE

Related Scientist

Researcher

나노 구조 물리 연구단
나노구조물리 연구단
more info

Effective characterization of polymer residues on two-dimensional materials by Raman spectroscopy

Cited 3 time in webofscience Cited 0 time in scopus
213 Viewed 2 Downloaded
Title
Effective characterization of polymer residues on two-dimensional materials by Raman spectroscopy
Author(s)
Ji-Hoon Park; Choi, S.H.; Chae, W.U.; Stephen, B.; Park, H.K.; Yang, W.; Kim, S.M.; Lee, J.S.; Kim, K.K.
Publication Date
2015-12
Journal
NANOTECHNOLOGY, v.26, no.48, pp.485701 -
Publisher
IOP PUBLISHING LTD
Abstract
Large-area two-dimensional (2D) materials grown by chemical vapor deposition need to be transferred onto a target substrate for real applications. Poly(methyl methacrylate) as a supporting layer is widely used during the transfer process and removed after finishing it. However, it is a challenge to diminish the polymer layer completely. It is necessary to readily characterize the polymer residues on 2D materials to facilitate the removal process. Here, we report a method that characterizes the polymer residues on 2D materials by tracking the presence of G-band of amorphous carbons (a-Cs) in the Raman spectrum after forming carbonized a-Cs through thermal annealing. The 13C-graphene is employed to separate the Raman signal G-band between 12C-a-Cs and 13C-graphene in the Raman spectrum. The residence of the polymer residues is clearly confirmed by the different Raman signals of two different isotopes (12C and 13C) due to differences in mass. Our effective method recognizes that while the polymer residue is not easily removed on graphene, those on hexagonal boron nitride and molybdenum disulfide are almost diminished under optimum thermal annealing conditions. Our method will not only contribute to the development of a new transfer process, but also help to achieve a clean surface of 2D materials. © 2015 IOP Publishing Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2220
ISSN
0957-4484
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
Effective characterization of polyer _ACS Nano.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse