scholarly journals Photoinduced modulation of the excitonic resonance via coupling with coherent phonons in a layered semiconductor

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
S. Mor ◽  
V. Gosetti ◽  
A. Molina-Sánchez ◽  
D. Sangalli ◽  
S. Achilli ◽  
...  
Keyword(s):  
Layered Semiconductor ◽  
Coherent Phonons ◽  
Excitonic Resonance

Lateral epitaxial growth of two-dimensional layered semiconductor heterojunctions

2014 ◽  
Vol 9 (12) ◽  
pp. 1024-1030 ◽  
Author(s):  
Xidong Duan ◽  
Chen Wang ◽  
Jonathan C. Shaw ◽  
Rui Cheng ◽  
Yu Chen ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Two Dimensional ◽  
Layered Semiconductor ◽  
Semiconductor Heterojunctions

Vibrational properties of the layered semiconductor germanium sulfide under hydrostatic pressure: Theory and experiment

1996 ◽  
Vol 53 (22) ◽  
pp. 14806-14817 ◽  
Author(s):  
H. C. Hsueh ◽  
M. C. Warren ◽  
H. Vass ◽  
G. J. Ackland ◽  
S. J. Clark ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Vibrational Properties ◽  
Layered Semiconductor ◽  
Germanium Sulfide ◽  
Theory And Experiment

Optical properties of orthorhombic germanium selenide: an anisotropic layered semiconductor promising for optoelectronic applications

2021 ◽  
Author(s):  
Agata Karolina Tołłoczko ◽  
Szymon J. Zelewski ◽  
Michał Błaszczak ◽  
Tomasz Woźniak ◽  
Anna Siudzińska ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Absorption ◽  
Van Der Waals ◽  
Group Iv ◽  
Black Phosphorus ◽  
Layered Semiconductor ◽  
Germanium Selenide ◽  
Optoelectronic Applications ◽  
High Optical Absorption

Group-IV monochalcogenides, such as germanium selenide (GeSe) are strongly anisotropic semiconducting van der Waals crystals isoelectronic to black phosphorus, with superior stability in air conditions. High optical absorption, good conductivity,...

Impedance and Photosensitivity Spectra of Nanocomposite Structures Based on Layered Semiconductor InSe and Ionic Salt RbNO3

2018 ◽  
Vol 215 (24) ◽  
pp. 1800460
Author(s):  
Anatoliy P. Bakhtinov ◽  
Volodymyr M. Vodopyanov ◽  
Volodymyr I. Ivanov ◽  
Ivan G. Tkachuk ◽  
Viktor V. Netyaga ◽  
...  
Keyword(s):  
Layered Semiconductor ◽  
Ionic Salt ◽  
Nanocomposite Structures

Study of anharmonicity in pure and doped InSe by Raman scattering

2018 ◽  
Vol 32 (30) ◽  
pp. 1850340 ◽  
Author(s):  
Mahmoud Zolfaghari
Keyword(s):  
Raman Scattering ◽  
Temperature Dependence ◽  
Temperature Variation ◽  
Optical Phonon ◽  
Line Center ◽  
Anharmonic Effect ◽  
Layered Semiconductor ◽  
Center Shift ◽  
Raman Modes ◽  
Quartic Anharmonicity

With the help of temperature dependence, Raman scattering anharmonic effect of various modes of layered semiconductor InSe over temperature range of 20–650 K has been studied. It was found that with an increase in temperature, anharmonicity will increase. Two and three phonons coupling with optical phonon, are used to describe temperature-induced anharmonicity in the linewidth of Raman modes. It was found that the temperature variation of the phonon parameter can be accounted for well by the cubic term in anharmonic model. To describe line-center shift of Raman modes, a model not considering independently cubic and quartic anharmonicity was used. A similar study has been done for InSe doped with different concentration of GaS dopant. The result of temperature study of InSe doped with GaS revealed that in this case anharmonicity increases with an increase in dopant and an increase in temperature.

Coherent Phonons in Ag-BaO Thin Films

1998 ◽  
Vol 15 (11) ◽  
pp. 834-836 ◽  
Author(s):  
Wei Qian ◽  
Hong Yan ◽  
Jing-jing Wang ◽  
Ying-hua Zou ◽  
Lin Lin ◽  
...  
Keyword(s):  
Thin Films ◽  
Coherent Phonons

scholarly journals Preparation of Few-Layered WS2 and Its Thermal Catalysis for Dihydroxylammonium-5,5′-Bistetrazole-1,1′-Diolate

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Yiping Shang ◽  
Wu Yang ◽  
Yabei Xu ◽  
Siru Pan ◽  
Huayu Wang ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Thermal Decomposition ◽  
Analysis Data ◽  
Decomposition Temperature ◽  
Thermal Excitation ◽  
Layered Semiconductor ◽  
Initial Decomposition Temperature ◽  
Thermal Decomposition Behavior ◽  
Decomposition Behavior ◽  
Catalytic Effects

In this study, few-layered tungsten disulfide (WS2) was prepared using a liquid phase exfoliation (LPE) method, and its thermal catalytic effects on an important kind of energetic salts, dihydroxylammonium-5,5′-bistetrazole-1,1′-diolate (TKX-50), were investigated. Few-layered WS2 nanosheets were obtained successfully from LPE process. And the effects of the catalytic activity of the bulk and few-layered WS2 on the thermal decomposition behavior of TKX-50 were studied by using synchronous thermal analysis (STA). Moreover, the thermal analysis data was analyzed furtherly by using the thermokinetic software AKTS. The results showed the WS2 materials had an intrinsic thermal catalysis performance for TKX-50 thermal decomposition. With the few-layered WS2 added, the initial decomposition temperature and activation energy (Ea) of TKX-50 had been decreased more efficiently. A possible thermal catalysis decomposition mechanism was proposed based on WS2. Two dimensional-layered semiconductor WS2 materials under thermal excitation can promote the primary decomposition of TKX-50 by enhancing the H-transfer progress.

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