Direct growth of graphene film on piezoelectric La3Ga5.5Ta0.5O14 crystal

被引：17

作者：

Brzhezinskaya, Maria ^{[1
]}

Irzhak, Artemii ^{[2
,4
]}

Irzhak, Dmitry ^{[2
]}

Kang, Tae Won ^{[3
]}

Kononenko, Oleg ^{[2
,4
]}

Matveev, Viktor ^{[2
]}

Panin, Gennady ^{[3
]}

Roshchupkin, Dmitry ^{[2
,4
]}

机构：

[1] Helmholtz Zentrum Berlin Mat & Energie GmbH, Inst Nanometre Opt & Technol, Albert Einstein Str 15, D-12489 Berlin, Germany

[2] Russian Acad Sci, Inst Microelect Technol & High Pur Mat, Chernogolovka 142432, Russia

[3] Dongguk Univ, Quantum Funct Semicond Res Ctr, 3 Ga 26 Pildong Junggu Seu, Seoul 100715, South Korea

[4] Natl Univ Sci & Technol MISiS, Leninskiy Prospekt 2, Moscow 119049, Russia

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2016年 / 10卷 / 08期

基金：

新加坡国家研究基金会; 俄罗斯基础研究基金会;

关键词：

graphene; piezoelectric crystals; La3Ga5.5Ta0.5O14; Raman spectroscopy; X-ray absorption; photoemission; growth; ABSORPTION; GAS;

D O I：

10.1002/pssr.201600122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For the first time, a few layer graphene was grown on the surface of the polar X-cut (110) of a piezoelectric La3Ga5.5Ta0.5O14 crystal by the CVD method. This polar X-cut is characterized by a good matching of the crystal lattice parameters of La3Ga5.5Ta0.5O14 and two-dimensional graphene crystal, as well as the presence of piezoelectric fields on the surface of the substrate, which could affect the graphene growth process. Raman spectroscopy investigation has shown the ability for direct growth of graphene on the piezo-electric crystal. The NEXAFS spectroscopy studies of the film grown on the surface of the X-cut of an La3Ga5.5Ta0.5O14 crystal also confirmed that the grown film is graphene. Moreover, the NEXAFS spectra enable the conclusion that additional electron states are formed as a result of chemical bonding between the atoms of graphene and the substrate which proceeds through hybridization of the valence electron states of the substrate and graphene atoms. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：639 / 644

页数：6

共 40 条

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[2] Phase-matching directions, refined Sellmeier equations, and second-order nonlinear coefficient of the infrared Langatate crystal La3Ga5.5Ta0.5O14 [J].