Procedure of removing polymer residues and its influences on electronic and structural characteristics of graphene

被引：95

作者：

Ahn, Youngkun ^{[1
]}

Kim, Hyein ^{[2
]}

Kim, Young-Hwan ^{[1
]}

Yi, Yeonjin ^{[2
]}

Kim, Seong-Il ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Ctr Mat Architecturing, Seoul 136791, South Korea

[2] Yonsei Univ, Inst Phys & Appl Phys, Seoul 120749, South Korea

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 09期

关键词：

FILMS; TRANSPARENT;

D O I：

10.1063/1.4794900

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Procedure of removing polymer residues by post-annealing and the effect on electronic properties of transferred monolayer graphene grown by chemical vapor deposition method are investigated using X-ray photoelectron spectroscopy and Raman spectroscopy. It is found that breaking the polymerization backbone bond induces effective removal of poly(methyl methacrylate) on the graphene surface by depolymerization, and decomposition of the carboxyl functional group involves reducing the level of p-doping of the graphene, while the annealing process leads to an increase in defects, and consequently, to oxidation that transforms the graphene into p-doped material. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794900]

引用

页数：5

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