Abstracts Book - IMRC 2018

• SA3-O017
OPTOELECTRONIC, SURFACE AND STRUCTURAL ANALYSIS OF
COINS NANOPARTICLES LIKE MOS2 NANOSHEETS, 0D OR 2D
MATERIAL?
Mikel Fernando Hurtado Morales 1,2 , Carlos Aldana 1 , Wilmer Feney Velandia 1 , Jhon Eyber Pazos 3 ,
Mario Alejandro Garcia Fox 3 , Jose Augusto Galvis Echeverry 3
1
Universidad Central, Electronic Engineering, Colombia. 2 Universidad Minuto de Dios, Civil
Engineering, Colombia. 3 Universidad Central, Cluster NBIC, Colombia.
Recent years, some significant developments have been accomplished by
research into two-dimensional (2D) nanomaterials due to their potential
applications in electronics, biosensors, energy storage and catalysis. MoS2
nanosheets have shown significantly attention because they have exceptional
electronic properties such as tunable energy bandgap and high charge-carrier
mobility. In this work MoS2 nanosheets were prepared under high frequency
sonication tip without conventional organic solvents and external cooled
environment. MoS2 water resulted inks were characterized by UV-vis
spectroscopy. Thin films of MoS2 were deposited by spray coating technique and
received on silicon wafers substrate at 150 °C. The experimental value of MoS2
Eg was 1,78 eV meaning extremely few layers material which is according with
AFM profile particles measurements, also using structural analysis by XRD, HR-
TEM and symmetrically vibrational modes by Raman spectroscopy. However the
extremely low area of resulting nanoparticles which have few nanometers in z-
axis and less than 50 nm radius suggest that their quantum dynamics is closer
to 0D than 2D materials, becoming in a quantum-coin like MoS2 structure which
will be very useful in biosensing devices and quantum electronics.
Acknowledgment:
Thanks to NBIC Research Cluster and Electronic Engineering Department and
emerging Advanced Microscopy LAB at Universidad Central, and Nanomaterials
LAB Physics Departement Universidad de Los Andes.
Keywords: MoS2, 2D, 0D
Presenting authors email: mfhurtadom@unal.edu.co