Micro-reflectance and transmittance spectroscopy: a versatile and powerful tool to characterize 2D materials

被引：151

作者：

Frisenda, Riccardo ^{[1
]}

Niu, Yue ^{[1
,2
]}

Gant, Patricia ^{[1
]}

Molina-Mendoza, Aday J. ^{[1
]}

Schmidt, Robert ^{[3
,4
]}

Bratschitsch, Rudolf ^{[3
,4
]}

Liu, Jinxin ^{[5
]}

Fu, Lei ^{[5
]}

Dumcenco, Dumitru ^{[6
,7
]}

Kis, Andras ^{[6
,7
]}

De lara, David Perez ^{[1
]}

Castellanos-Gomez, Andres ^{[1
]}

机构：

[1] Inst Madrileno Estudios Avanzados Nanociencia IMD, Campus Cantoblanco, E-28049 Madrid, Spain

[2] Harbin Inst Technol, Natl Key Lab Sci & Technol Adv Composites Special, Harbin, Peoples R China

[3] Univ Munster, Inst Phys, D-48149 Munster, Germany

[4] Univ Munster, Ctr Nanotechnol, D-48149 Munster, Germany

[5] Wuhan Univ, Lab Adv Nanomat, Coll Chem & Mol Sci, Wuhan, Peoples R China

[6] Ecole Polytech Fed Lausanne, Inst Elect Engn, CH-1015 Lausanne, Switzerland

[7] Ecole Polytech Fed Lausanne, Inst Mat Sci & Engn, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2017年 / 50卷 / 07期

关键词：

2D materials; optical spectroscopy; differential reflectance; transmittance; transition metal dichalcogenides; PHOTOLUMINESCENCE EMISSION; OPTICAL-IDENTIFICATION; VALLEY POLARIZATION; MONOLAYER MOS2; RAMAN;

D O I：

10.1088/1361-6463/aa5256

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical spectroscopy techniques such as differential reflectance and transmittance have proven to be very powerful techniques for studying 2D materials. However, a thorough description of the experimental setups needed to carry out these measurements is lacking in the literature. We describe a versatile optical microscope setup for carrying out differential reflectance and transmittance spectroscopy in 2D materials with a lateral resolution of similar to 1 mu m in the visible and near-infrared part of the spectrum. We demonstrate the potential of the presented setup to determine the number of layers of 2D materials and characterize their fundamental optical properties, such as excitonic resonances. We illustrate its performance by studying mechanically exfoliated and chemical vapor-deposited transition metal dichalcogenide samples.

引用

页数：8

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