文献类型：期刊文献

英文题名：Study of copper-phthalocyanine and pentacene film growth on transferred graphene: The influence of polymer residues

作者：Shi, Bi-Yun[1];Dou, Wei-Dong[1]

机构：[1]Shaoxing Univ, Phys Dept, Shaoxing 312000, Peoples R China

年份：2017

卷号：636

起止页码：723

外文期刊名：THIN SOLID FILMS

收录：SCI-EXPANDED(收录号：WOS:000408037800102)、、EI(收录号：20172903958604)、Scopus(收录号：2-s2.0-85024102141)、WOS

基金：The work described in this paper was supported by grants from the National Natural Science Foundation of China (NSFC Grant Nos. 61474077 and 11404215).

语种：英文

外文关键词：Organic thin film; Film growth; Polymethylmethacrylate residue; Graphene

外文摘要：Wet transferring of chemical vapor deposition (CVD) graphene with the assistance of poly(methylmethacrylate) (PMMA) usually leaves polymer contaminations onto graphene surface. Knowledge about the influence of PMMA residues on organic film growth properties is crucial for graphene-related organic electronic devices. In this study, we investigate growth properties of coper-phthalocyanine (CuPc) and pentacene on PMMA contaminated graphene substrate. Grain size and morphologies of CuPc and pentacene films were found to be governed by the density of PMMA residues on graphene. Nevertheless, the molecular packing structures of CuPc and pentacene respond differently with the density with PMMA residues. CuPc molecules tend to nucleated into grains with molecular pi-pi stacking parallel to graphene surface, which is irrespective of the PMMA residues. Whereas the packing behavior of pentacene on PMMA-transferred CVD graphene is sensitive to the density of PMMA residues. Molecular pi-pi stacking perpendicular to graphene is observed when pentacene was deposited onto as-transferred graphene. Parallel mode was observed only on the substrates without PMMA residues. (C) 2017 Elsevier B.V. All rights reserved.