scholarly journals Photo-modulated optical and electrical properties of graphene

Nanophotonics ◽  
2022 ◽  
Vol 0 (0) ◽  
Author(s):  
Hongyu Tang ◽  
Sergey G. Menabde ◽  
Tarique Anwar ◽  
Junhyung Kim ◽  
Min Seok Jang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Optical And Electrical Properties ◽  
Hot Carriers ◽  
Electrical And Optical Properties ◽  
Promising Strategy ◽  
Wide Range ◽  
Optical Effects ◽  
Attractive Candidate ◽  
Photoactive Materials

Abstract Photo-modulation is a promising strategy for contactless and ultrafast control of optical and electrical properties of photoactive materials. Graphene is an attractive candidate material for photo-modulation due to its extraordinary physical properties and its relevance to a wide range of devices, from photodetectors to energy converters. In this review, we survey different strategies for photo-modulation of electrical and optical properties of graphene, including photogating, generation of hot carriers, and thermo-optical effects. We briefly discuss the role of nanophotonic strategies to maximize these effects and highlight promising fields for application of these techniques.

scholarly journals Structural, optical, and electrical properties of (Zn,Al)O films over a wide range of compositions

2006 ◽  
Vol 100 (7) ◽  
pp. 073714 ◽  
Author(s):  
J. G. Lu ◽  
Z. Z. Ye ◽  
Y. J. Zeng ◽  
L. P. Zhu ◽  
L. Wang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Optical And Electrical Properties ◽  
Wide Range

Optical and electrical properties of GaN: Si-based microstructures with a wide range of doping levels

2015 ◽  
Vol 57 (4) ◽  
pp. 787-793 ◽  
Author(s):  
V. F. Agekyan ◽  
E. V. Borisov ◽  
L. E. Vorobjev ◽  
G. A. Melentyev ◽  
H. Nykänen ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Optical And Electrical Properties ◽  
Wide Range

The Role of Covalent and Metallic Radii in Covalent Metallic Superlattices and Two-Dimensional Isoelectronic Alloys

1987 ◽  
Vol 102 ◽  
Author(s):  
Raphael Tsu
Keyword(s):  
Electrical Properties ◽  
Crucial Role ◽  
Two Dimensional ◽  
Ionic Radii ◽  
Wide Range ◽  
Ordered Layers

ABSTRACTCovalent metallic superlattices and isoelectronic alloys consist of ordered layers of, for example, Si/AlP, Ge/GaAs, and Si/Sb,etc. Depending on design, wide range of electrical properties can result. The covalent, metallic and ionic radii play a crucial role in the stoichiometry of epitaxial systems.

Dependence of Negative Substrate Bias on the Optical and Electrical Properties of W-Doped Vanadium Dioxide Thin Films

2016 ◽  
Vol 847 ◽  
pp. 184-189 ◽  
Author(s):  
Mao Dong Zhu ◽  
Dong Ping Zhang ◽  
Yi Liu ◽  
Kai Yang ◽  
Guang Xing Liang ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Optical Switching ◽  
Substrate Bias ◽  
Optical And Electrical Properties ◽  
X Ray Diffraction ◽  
Electrical And Optical Properties ◽  
Switching Performance ◽  
Grown Sample ◽  
Dc Reactive Magnetron Sputtering ◽  
Vanadium Dioxide Thin Films

W-doped VO2 films were prepared by DC reactive magnetron sputtering with various substrate bias. The microstructure, surface morphology, electrical and optical performances of the films were characterized by x-ray diffraction, scanning electron microscope, four-point probe method and spectrophotometer, respectively. The effect of substrate bias on microstructure, electrical and optical properties of sputtered W-doped VO2 films was studied. The XRD results reveal that all samples exhibit preferential VO2 (011) lattice orientation except the as-grown sample in our experiment. All the samples applied substrate bias show some degree optical switching performance in IR range, while the thermochromic phenomena was observed from resistance-temperature dependence plot only for the samples of substrate bias varied from-100V to-200V. This indicate that the optical and electrical properties of W-doped VO2 films have different sensitivity to substrate bias. Optimal substrate bias of-200V sample shows fine semiconductor-metal-transition performance.

Preparation and Study the Electrical and Optical Properties for (PVA-PEG-Sr2O3) Nanocomposites

2021 ◽  
Vol 19 (10) ◽  
pp. 47-55
Author(s):  
Safa Ahmed Jabbar Al-Rubaye ◽  
Nassar A. Al-lsawi ◽  
Ali R. Abdulridha
Keyword(s):  
Dielectric Constant ◽  
Refractive Index ◽  
Optical Properties ◽  
Electrical Properties ◽  
Dielectric Loss ◽  
Energy Gap ◽  
Antimony Oxide ◽  
Optical And Electrical Properties ◽  
Electrical And Optical Properties ◽  
Constant E

In the presented work, the optical and electrical properties of composite materials (PVA-PEG-Sr2O3) were measured, as the electrical properties were verified at various frequencies in range of 100 Hz-6 MHz. In addition, the experimental results showed that the increase in frequency causes a reduction in the dielectric loss (δ) and dielectric constant (ɛ), and there is an increase in ɛ due to the increase in the content of antimony oxide (Sr2O3). It increases with increasing frequency and decreases with increasing Sr2O3 content in PVA-PEG-Sr2O3 compounds, the result of the optical properties of the nanoparticles (PVA-PEG-Sr2O3) showed that the values transmittance and energy gap were reduced with the increases in the concentrations of Sr2O3 NPs, whereas the values related to extinction coefficient, absorption coefficient, optical conductivity, refractive index, and dielectric constant (imaginary, real) were increased with increase in the concentration of Sr2O3 NPs.

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