Effects of controllable biaxial strain on the Raman spectra of monolayer graphene prepared by chemical vapor deposition

被引：49

作者：

Jie, Wenjing ^{[1
]}

Hui, Yeung Yu ^{[1
]}

Zhang, Yang ^{[1
]}

Lau, Shu Ping ^{[1
]}

Hao, Jianhua ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 22期

关键词：

SPECTROSCOPY; POLARIZATION; BEHAVIOR; FILMS; MODE;

D O I：

10.1063/1.4809922

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Controllable biaxial strain is delivered to monolayer graphene prepared by chemical vapor deposition via applying an electric field to the underlying piezoelectric [Pb(Mg1/3Nb2/3)O-3] (0.7)-[PbTiO3](0.3) substrate. The effects of tunable strain on the Raman spectra of graphene are investigated in reversible and real-time manners. Such strain can result in a blue shift in 2D band of graphene. The calculations based on the Gruneisen parameter identify the actual biaxial strain to graphene, leading to a continuous 2D band shift, which is detected during the retention of bias voltage. The physical mechanism behind this unique Raman behavior is discussed. (C) 2013 AIP Publishing LLC.

引用

页数：4

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