Tailoring the optical properties of atomically-thin WS2via ion irradiation

Nanoscale ◽  
2017 ◽  
Vol 9 (31) ◽  
pp. 11027-11034 ◽  
Author(s):  
L. Ma ◽  
Y. Tan ◽  
M. Ghorbani-Asl ◽  
R. Boettger ◽  
S. Kretschmer ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Ion Irradiation ◽  
Transition Metal Dichalcogenides ◽  
Optoelectronic Properties ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Two-dimensional transition metal dichalcogenides (TMDCs) exhibit excellent optoelectronic properties.

scholarly journals Towards the evaluation of defects in MoS2 using cryogenic photoluminescence spectroscopy

Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3019-3028 ◽  
Author(s):  
Tim Verhagen ◽  
Valentino L. P. Guerra ◽  
Golam Haider ◽  
Martin Kalbac ◽  
Jana Vejpravova
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Photoluminescence Spectroscopy ◽  
Two Dimensional ◽  
Electronic And Optical Properties ◽  
Metal Dichalcogenides

Electronic and optical properties of two-dimensional transition metal dichalcogenides are strongly influenced by defects. Cryogenic photoluminescence spectroscopy is a superb tool for characterization of the nature and density of these defects.

Trap-free exciton dynamics in monolayer WS2 via oleic acid passivation

Nanoscale ◽  
2021 ◽  
Author(s):  
Dabin Lin ◽  
Wenjun Ni ◽  
Gagik G. Gurzadyan ◽  
Fangteng Zhang ◽  
Weiren Zhao ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Transition Metal ◽  
Free Exciton ◽  
Transition Metal Dichalcogenides ◽  
Photonic Devices ◽  
Optoelectronic Properties ◽  
Two Dimensional ◽  
Exciton Dynamics ◽  
The Past ◽  
Metal Dichalcogenides

Two-dimensional transition metal dichalcogenides have attracted tremendous attention in the past few decades due to their attractive optoelectronic properties. However, their widespread utility in photonic devices and components is still...

Two-dimensional transition metal dichalcogenides: interface and defect engineering

2018 ◽  
Vol 47 (9) ◽  
pp. 3100-3128 ◽  
Author(s):  
Zehua Hu ◽  
Zhangting Wu ◽  
Cheng Han ◽  
Jun He ◽  
Zhenhua Ni ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Electronic Devices ◽  
Transition Metal Dichalcogenides ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Electronic And Optical Properties ◽  
Recent Advances ◽  
Metal Dichalcogenides

This review summarizes the recent advances in understanding the effects of interface and defect engineering on the electronic and optical properties of TMDCs, as well as their applications in advanced (opto)electronic devices.

Defects-related Dynamics of Photoexcited Carriers in 2D Transition Metal Dichalcogenides

2021 ◽  
Author(s):  
Lei Gao ◽  
Zhenliang Hu ◽  
Junpeng Lu ◽  
Hongwei Liu ◽  
Zhenhua Ni
Keyword(s):  
Transition Metal ◽  
Band Structure ◽  
Transition Metal Dichalcogenides ◽  
Optoelectronic Properties ◽  
Two Dimensional ◽  
Metal Dichalcogenides

Two-dimensional (2D) transition metal dichalcogenides (TMDs) exhibit enormous potential in the field of optoelectronics because of their attractive optoelectronic properties, such as strong excitonic emissions, spin splited band structure, palpable...

Structural, Electronic and Optical Properties of Transition Metal Dichalcogenides Layer PtS2 (Se2) for Nano Devices Applications

2021 ◽  
Vol 886 ◽  
pp. 48-56
Author(s):  
Rusul A. Ghazi ◽  
Dhay Ali Sabur ◽  
Ruaa S. Al-Hasnawy ◽  
Haider O. Muhsen ◽  
Bahjat B. Kadhim ◽  
...  
Keyword(s):  
Optical Properties ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Band Gaps ◽  
Two Dimensional ◽  
Electronic And Optical Properties ◽  
New Class ◽  
Metal Dichalcogenides ◽  
Direct Band ◽  
Indirect Band Gap

Monolayer materials are promising material in applications, such as possess some layers with sturdy in-plane bonds. These materials represents two-dimensional (2D) materials which are possess a vertical weak Van der Waals (VdW) interactions sandwiched among the neighboring sheets. These structures of layers offer the chance to be split to free atomic layers. So new class material with two dimensional transition metal dichalcogenides which includes PtS2 (Se2) have unique geometric structural, electronic and optical properties are studied. It has attracted the attention of many researchers for its extensive applications in (catalysis, sensing, electronics, and optoelectronics devices). It has been disclosed from the outcomes that these monolayers are dynamically stable according to the phonon calculations. Also, the direct band gaps located at K point for MoS2 and MoSe2 are 1.67 eV and 1.484 eV and for PtS2 and PtSe2 located between Γ-M points are 1.887 and 1.66, respectively. Also, the PtS2 have indirect band gap of about 1.775 eV situated at KΓ- ΓM and for PtSe2 is 1.401 eV at Γ- ΓM path. The results show that the maximum absorption coefficients are between 14×104 and 16.4×104 cm-1 for PtS2 and MoSe2, respectively. Besides, the maximum conductivities are between 2.09×101 and 3.65×1015 1/s for PtSe2 and MoS2, and the major values Likewise, the optical properties determined over rang energy 0.30 eV. The work function is equal 6.197eV for PtS2 and 5.628eV for PtSe2. It has been shown by studying photon dispersion of both monolayers that it is stable because it does not contain imaginary frequencies.

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