Controlling Hydrogenation of Graphene on Ir(111)

被引：72

作者：

Balog, Richard ^{[1
]}

Andersen, Mie ^{[1
,2
]}

Jorgensen, Bjarke ^{[1
,2
]}

Sljivancanin, Zeljko ^{[3
]}

Hammer, Bjork ^{[1
,2
]}

Baraldi, Alessandro ^{[4
,5
,6
]}

Larciprete, Rosanna ^{[7
]}

Hofmann, Philip ^{[1
,2
]}

Hornekaer, Liv ^{[1
]}

Lizzit, Silvano ^{[8
]}

机构：

[1] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark

[2] Aarhus Univ, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark

[3] Vinca Inst Nucl Sci 020, RS-11001 Belgrade, Serbia

[4] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[5] Univ Trieste, Ctr Excellence Nanostruct Mat, I-34127 Trieste, Italy

[6] IOM CNR Lab TASC, I-34149 Trieste, Italy

[7] UOS Tor Vergata, CNR Ist Sistemi Complessi, Rome, Italy

[8] Elettra Sincrotrone Trieste SCpA, I-34149 Trieste, Italy

来源：

ACS NANO | 2013年 / 7卷 / 05期

基金：

欧洲研究理事会;

关键词：

graphene; Ir(111); hydrogen; XPS; DFT; FUNCTIONALIZATION; GRAPHITE(0001);

D O I：

10.1021/nn400780x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Combined fast X-ray photoelectron spectroscopy and density functional theory calculations reveal the presence of two types of hydrogen adsorbate structures at the graphene/Ir(111) interface, namely, graphane-like islands and hydrogen dimer structures. While the former give rise to a periodic pattern, dimers tend to destroy the periodicity. Our data reveal distinctive growth rates and stability of both types of structures, thereby allowing one to obtain well-defined patterns of hydrogen clusters. The ability to control and manipulate the formation and size of hydrogen structures on graphene facilitates tailoring of its properties for a wide range of applications by means of covalent functionalization.

引用

页码：3823 / 3832

页数：10

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