Graphene Grown from Flat and Bowl Shaped Polycyclic Aromatic Hydrocarbons on Cu(111)

被引：2
作者：
Li, Jingyi [1 ]
Lampart, Samuel [2 ]
Siegel, Jay S. [3 ]
Ernst, Karl-Heinz [1 ,2 ,4 ]
Waeckerlin, Christian [1 ,4 ]
机构：
[1] Swiss Fed Labs Mat Sci & Technol, Uberlandstr 129, Dubendorf, Switzerland
[2] Univ Zurich, Dept Chem, Winterthurerstr 190, CH-8057 Zurich, Switzerland
[3] Tianjin Univ, Sch Pharmaceut Sci & Technol, 92 Weijin Rd, Tianjin 3000072, Peoples R China
[4] Czech Acad Sci, Inst Phys, Cukrovamicka 10, Prague 16200 6, Czech Republic
来源：
CHEMPHYSCHEM | 2019年 / 20卷 / 18期
基金：
瑞士国家科学基金会;
关键词：
graphene; copper surface; defective graphene; scanning tunneling microscopy; X-ray photoelectron spectroscopy; HIGH-QUALITY; SURFACE; PENTAINDENOCORANNULENE; ALLOTROPES; METALATION;
D O I：
10.1002/cphc.201900291
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The growth of carbon layers, defective graphene, and graphene by deposition of polycyclic aromatic hydrocarbons (PAHs) on Cu(111) is studied by scanning tunneling microscopy and X-ray photoelectron spectroscopy. Two different PAHs are used as starting materials: the buckybowl pentaindenocorannulene (PIC) which contains pentagonal rings and planar coronene (CR). For both precursors, with increasing sample temperature during deposition, porous carbon aggregates (350 degrees C), dense carbon layers (400-450 degrees C), disordered defective graphene (500 degrees C-550 degrees C), and extended graphene (>= 600 degrees C) are obtained. No significant differences for defective graphene grown from PIC and CR are observed. C 1s X-ray photoelectron spectra of PIC and CR derived samples grown at 350-550 degrees C exhibit a characteristic C-Cu low binding energy component. Preparation at >= 600 degrees C eliminates this C-Cu species and only C-C bonded carbon remains.
引用
收藏
页码：2354 / 2359
页数：6
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