Mapping of Low-Frequency Raman Modes in CVD-Grown Transition Metal Dichalcogenides: Layer Number, Stacking Orientation and Resonant Effects

Scientific Reports
Maria O'BrienGeorg S Duesberg

Abstract

Layered inorganic materials, such as the transition metal dichalcogenides (TMDs), have attracted much attention due to their exceptional electronic and optical properties. Reliable synthesis and characterization of these materials must be developed if these properties are to be exploited. Herein, we present low-frequency Raman analysis of MoS2, MoSe2, WSe2 and WS2 grown by chemical vapour deposition (CVD). Raman spectra are acquired over large areas allowing changes in the position and intensity of the shear and layer-breathing modes to be visualized in maps. This allows detailed characterization of mono- and few-layered TMDs which is complementary to well-established (high-frequency) Raman and photoluminescence spectroscopy. This study presents a major stepping stone in fundamental understanding of layered materials as mapping the low-frequency modes allows the quality, symmetry, stacking configuration and layer number of 2D materials to be probed over large areas. In addition, we report on anomalous resonance effects in the low-frequency region of the WS2 Raman spectrum.

References

Mar 17, 2010·Nano Letters·Andrea SplendianiFeng Wang
Apr 16, 2010·ACS Nano·Changgu LeeSunmin Ryu
Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Feb 1, 2011·Nature Nanotechnology·B RadisavljevicA Kis
Feb 5, 2011·Science·Jonathan N ColemanValeria Nicolosi
Aug 9, 2011·Advanced Materials·Kangho LeeGeorg S Duesberg
Nov 1, 2011·Nano Letters·Goki EdaManish Chhowalla
Feb 7, 2012·Nature Materials·P H TanA C Ferrari
Apr 3, 2012·Advanced Materials·Yi-Hsien LeeTsung-Wu Lin
Sep 18, 2012·Nanoscale·Yu-Chuan LinLain-Jong Li
Oct 9, 2012·ACS Nano·Dominik Lembke, Andras Kis
Dec 1, 2012·Nano Letters·Humberto R GutiérrezMauricio Terrones
Feb 8, 2013·Nano Letters·Desheng KongYi Cui
Feb 26, 2013·Nano Letters·Yanyuan ZhaoQihua Xiong
Mar 14, 2013·Optics Express·Philipp TonndorfRudolf Bratschitsch
Apr 5, 2013·Nature Nanotechnology·Andrea C Ferrari, Denis M Basko
May 15, 2013·Scientific Reports·Yumeng ShiHui Ying Yang
Jun 12, 2013·Nature Nanotechnology·Oriol Lopez-SanchezAndras Kis
Jul 4, 2013·Nano Letters·Hiram J ConleyKirill I Bolotin
Jul 28, 2013·Nature·A K Geim, I V Grigorieva
Sep 4, 2013·Nanoscale·Weijie ZhaoGoki Eda
Sep 13, 2013·Advanced Materials·Kangho LeeGeorg S Duesberg
Oct 3, 2013·Nano Letters·Andres Castellanos-GomezGary A Steele
Feb 7, 2014·Nature Communications·Sefaattin TongayJunqiao Wu
Mar 8, 2014·ACS Nano·Oriol Lopez-SanchezAndras Kis
Mar 29, 2014·Advanced Materials·Qingliang FengLiming Xie
Jun 17, 2014·Nano Letters·Arend M van der ZandeJames C Hone
Jul 1, 2014·Scientific Reports·Chanyoung YimGeorg S Duesberg
Jul 30, 2014·Nature Nanotechnology·R SuzukiY Iwasa
Sep 1, 2014·Nature Materials·Rajesh KapperaManish Chhowalla
Sep 30, 2014·Nature Materials·Yongji GongPulickel M Ajayan
Dec 10, 2014·Scientific Reports·Maria O'BrienGeorg S Duesberg
Dec 10, 2014·Accounts of Chemical Research·Marcos A PimentaLeandro M Malard
Jan 27, 2015·Nanoscale·Jae-Ung LeeHyeonsik Cheong
Mar 24, 2015·Nature Nanotechnology·Muharrem AcerceManish Chhowalla
Apr 18, 2015·Physical Review Letters·Bruno R CarvalhoMarcos A Pimenta

❮ Previous
Next ❯

Citations

Nov 2, 2016·ACS Applied Materials & Interfaces·Mehwish NazGeorg S Duesberg
Feb 9, 2017·Journal of the American Chemical Society·Melinda J ShearerSong Jin
Jan 11, 2019·Nanoscale·Antonio Di BartolomeoFilippo Giubileo
Feb 22, 2017·Scientific Reports·Jerome T MlackMarija Drndić
Oct 24, 2017·Small·Hyung-Jun KimJang-Yeon Kwon
Jun 9, 2020·Beilstein Journal of Nanotechnology·Avra S BandyopadhyayAnupama B Kaul
Feb 19, 2021·Nature Communications·Juan YuYanping Liu
Mar 7, 2018·ACS Applied Materials & Interfaces·Duc Anh NguyenMun Seok Jeong
Oct 27, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Hongfei LiuDongzhi Chi
Nov 24, 2021·Advanced Materials·Ying QinSefaattin Tongay

❮ Previous
Next ❯

Methods Mentioned

BETA
atomic
transmission electron microscopy
atomic force microscopy
Raman

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.