Tuning the Dirac Point in CVD-Grown Graphene through Solution Processed n-Type Doping with 2-(2-Methoxyphenyl)-1,3-dimethyl-2,3-dihydro-1H-benzoimidazole

被引：133

作者：

Wei, Peng ^{[1
]}

Liu, Nan ^{[1
]}

Lee, Hye Ryoung ^{[3
]}

Adijanto, Eric ^{[1
]}

Ci, Lijie ^{[4
]}

Naab, Benjamin D. ^{[1
]}

Zhong, Jian Qiang ^{[5
]}

Park, Jinseong ^{[4
]}

Chen, Wei ^{[5
]}

Cui, Yi ^{[2
,6
]}

Bao, Zhenan ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[2] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[3] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

[4] Samsung Cheil Ind Inc, Elect Mat Res Ctr, San Jose Res Inst, San Jose, CA 95131 USA

[5] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[6] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 05期

基金：

美国国家科学基金会;

关键词：

CVD grown graphene; n-type doping; Dirac point; solution-process; transistor; inkjet-printing; FIELD-EFFECT TRANSISTORS; CHEMICAL-VAPOR-DEPOSITION; ENERGY-LEVEL ALIGNMENT; BILAYER GRAPHENE; EPITAXIAL GRAPHENE; DOPED GRAPHENE; BAND-GAP; SEMICONDUCTOR; FILMS; CONVERSION;

D O I：

10.1021/nl303410g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Controlling the Dirac point of graphene is essential for complementary circuits. Here, we describe the use of 2-(2-methoxyphenyl)-1,3-dimethy1-2,3-dihydro-1H-benzoimidazole (o-MeO-DMBI) as a strong n-type dopant for chemical-vapor-deposition (CVD) grown graphene. The Dirac point of graphene can be tuned significantly by spin-coating o-MeO-DMBI solutions on the graphene sheets at different concentrations. The transport of graphene can be changed from p-type to ambipolar and finally n-type. The electron transfer between o-MeO-DMBI and graphene was additionally confirmed by Raman imaging and photoemission spectroscopy (PES) measurements. Finally, we fabricated complementary inverter via inkjet printing patterning of o-MeO-DMBI solutions on graphene to demonstrate the potential of o-MeO-DMBI n-type doping on graphene for future applications in electrical devices.

引用

页码：1890 / 1897

页数：8

共 81 条

[1] Honeycomb Carbon: A Review of Graphene [J].