Synthesis and optical properties of single-crystalline SnS1−xSex nanobelts

2020 ◽  
Vol 35 (4) ◽  
pp. 276-281
Author(s):  
Shengru Wang ◽  
Xiaofang Lai ◽  
Bingsheng Du ◽  
Junhao Ma ◽  
Peihua Wang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Property ◽  
Doping Concentration ◽  
Band Gaps ◽  
Phonon Modes ◽  
Facile Hydrothermal Method ◽  
One Dimensional ◽  
Optical Band Gaps ◽  
Structure Morphology ◽  
Se Doping

In this work, SnS1−xSex ternary nanobelts were synthesized by a facile hydrothermal method without the assistance of surfactants. The structure, morphology, microstructure, compositions, chemical valences, phonon modes, and optical band gaps of the SnS1−xSex nanobelts were characterized in detail. The results indicate that the SnS1−xSex nanobelts have uniform one-dimensional morphology and are single crystals with high crystallinity. Se is incorporated into the SnS lattice to substitute for S-forming ternary SnS1−xSex alloy. With the increase of Se doping concentration, the optical band gaps of the nanobelts gradually decrease from 1.15 to 1.01 eV, confirming the tunable optical property achieved here.

Structural, electrical and optical properties of Mg-doped CuAlO2 films by pulsed laser deposition

RSC Advances ◽  
2014 ◽  
Vol 4 (78) ◽  
pp. 41294-41300 ◽  
Author(s):  
Y. S. Zou ◽  
H. P. Wang ◽  
S. L. Zhang ◽  
D. Lou ◽  
Y. H. Dong ◽  
...  
Keyword(s):  
Optical Properties ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Band Gaps ◽  
Laser Deposition ◽  
Electrical And Optical Properties ◽  
Optical Band Gaps ◽  
P Type ◽  
Enhanced Conductivity ◽  
Mg Doped

P-type Mg doped CuAlO2 films with high crystallinity are prepared by pulsed laser deposition followed by annealing, and exhibit enhanced conductivity and tunable optical band gaps.

scholarly journals Composition-controlled synthesis and tunable optical properties of ternary boron carbonitride nanotubes

RSC Advances ◽  
2017 ◽  
Vol 7 (21) ◽  
pp. 12511-12517 ◽  
Author(s):  
Hongling Li ◽  
Roland Yingjie Tay ◽  
Siu Hon Tsang ◽  
Lin Jing ◽  
Minmin Zhu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Boron Nitride ◽  
Boron Nitride Nanotubes ◽  
Band Gaps ◽  
Controlled Synthesis ◽  
Boron Carbonitride ◽  
Optical Band Gaps ◽  
Tunable Optical Properties

Ternary boron nitride nanotubes (BCNNTs) with controllable compositions and tunable optical band gaps have been successfully achieved.

Spinach Ferredoxin (Fdx) as an Organic Material to Improve Optical Band Gap of Chitosan (Cs) Biofilm

2015 ◽  
Vol 754-755 ◽  
pp. 939-943
Author(s):  
Devi Shantini Chandrasakaran ◽  
Irwana Nainggolan ◽  
Mohd Nazree Derman ◽  
Tulus Ikhsan Nasution
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
Spin Coating ◽  
Organic Material ◽  
Optical Band Gap ◽  
Band Gaps ◽  
Coating Technique ◽  
Optical Band Gaps ◽  
Chitosan Matrix ◽  
Straight Line

In this study, the effect of spinach-ferredoxin addition in chitosan matrix towards optical band gap was investigated. 5 distinct solutions were prepared by blending chitosan and spinach-ferredoxin (Cs-Fdx) with the volume to volume ratios of 100:0, 95:5, 90:10, 85:15 and 80:20 respectively. The solutions were cast into film via spin coating technique. The optical properties in terms of absorbance for these films were investigated using UV-Vis Spectrometer. UV-Vis result showed that the absorbance increased as the spinach-ferredoxin content increases. Finally, the optical band gaps of the films were determined by extrapolating a straight line of (αhν)2vs. hν curves. Band gap value of 3.48 eV, 3.25 eV, 3.2 eV, 3.0 eV, and 2.8 eV were observed for (Cs-Fdx) films with 100:0, 95:5, 90:10, 85:15 and 80:20 respectively.

Optical and Electron-Beam Recording of Surface Relief’s Using Ge5As37S58–Se Nanomultilayers as Registering Media

2016 ◽  
Vol 39 ◽  
pp. 96-104 ◽  
Author(s):  
Alexander Stronski ◽  
Elena Achimova ◽  
Oleksandr Paiuk ◽  
Alexei Meshalkin ◽  
Vladimir Abashkin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Surface Relief ◽  
Band Gaps ◽  
Holographic Recording ◽  
Multilayer Nanostructures ◽  
Optical Band Gaps ◽  
Single Oscillator Model ◽  
Recording Process ◽  
Single Oscillator

Processes of e-beam and holographic recording of surface-relief structures using Ge5As37S58–Se multilayer nanostructures as registering media were studied in this paper. Optical properties of Ge5As37S58, Se layers and Ge5As37S58–Se multilayer nanostructures were investigated. Spectral dependencies of refractive index were analyzed within the frames of single-oscillator model. Values of optical band gaps for Ge5As37S58, Se layers and Ge5As37S58–Se multilayer nanostructures were obtained from Tauc dependencies. Holographic recording process depends on the polarization of the recording beams. Using e-beam and holographic recording diffraction gratings and other elements were recorded in Ge5As37S58–Se multilayer nanostructures.

ChemInform Abstract: Tuning of Optical Band Gaps: Syntheses, Structures, Magnetic Properties, and Optical Properties of CsLnZnSe3 (Ln: Sm, Tb, Dy, Ho, Er, Tm, Yb, and Y).

ChemInform ◽  
2010 ◽  
Vol 33 (22) ◽  
pp. no-no
Author(s):  
Kwasi Mitchell ◽  
Christy L. Haynes ◽  
Adam McFarland ◽  
Richard P. Van Duyne ◽  
James A. Ibers
Keyword(s):  
Magnetic Properties ◽  
Optical Properties ◽  
Band Gaps ◽  
Optical Band Gaps

scholarly journals On KCN treatment effects on optical properties of Si-based bilayers

2019 ◽  
Vol 70 (7) ◽  
pp. 77-82
Author(s):  
Jarmila Müllerová ◽  
Emil Pinčík ◽  
Martin Králik ◽  
Michaela Holá ◽  
Masao Takahashi ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Structural Changes ◽  
Optical Transmittance ◽  
Band Gaps ◽  
Refractive Indices ◽  
Hydrogenated Silicon ◽  
Optical Band Gaps ◽  
Treatment Conditions ◽  
P Type

Abstract In this paper we report results from optical transmittance spectroscopy complemented with data from Raman scattering measurements to determine optical properties of two series of silicon based bilayers deposited by PECVD on glass substrate (intrinsic a-Si:H/p-type a-SiC:H and n-type mc-Si:H/intrinsic a-Si:H). These samples represent segments of common p-i-n thin film amorphous silicon solar cells with intrinsic hydrogenated silicon (a-Si:H) as the solar absorber. The members of the series differ by the KCN treatment conditions. Dispersive and absorptive optical properties – refractive indices, absorption coefficients and optical band gaps were determined from transmittance spectra. Each bilayer was considered as one effective thin film the optical properties of which can be regarded as effective optical properties of the bilayer structure. After KCN treatments refractive indices were modified probably due to the structural changes of bilayers. Moreover the effect of the solvent used in KCN solutions was recognized. Optical band gaps calculated either by the Tauc procedure or determined as iso-absorption levels were found to be only slightly KCN treatment dependent.

Tuning of Optical Band Gaps:  Syntheses, Structures, Magnetic Properties, and Optical Properties of CsLnZnSe3(Ln = Sm, Tb, Dy, Ho, Er, Tm, Yb, and Y)

2002 ◽  
Vol 41 (5) ◽  
pp. 1199-1204 ◽  
Author(s):  
Kwasi Mitchell ◽  
Christy L. Haynes ◽  
Adam D. McFarland ◽  
Richard P. Van Duyne ◽  
James A. Ibers
Keyword(s):  
Magnetic Properties ◽  
Optical Properties ◽  
Band Gaps ◽  
Optical Band Gaps

Structural Properties of Zinc Doped Nanocrystalline Ceria

2014 ◽  
Vol 925 ◽  
pp. 144-148
Author(s):  
P. Suriakala ◽  
K. Tamilarasan
Keyword(s):  
Optical Properties ◽  
Average Crystallite Size ◽  
Combustion Method ◽  
Lattice Parameter ◽  
Zinc Nitrate ◽  
Band Gaps ◽  
Optical Band Gaps ◽  
Nanocrystalline Ceria ◽  
Vis Spectroscopy ◽  
Structure And Microstructure

Zinc doped nanoceria powders were prepared by a simple and fast microwave induced combustion method using cerium nitrate, zinc nitrate, glycine and sorbitol. The resultant powders were examined for their structure and microstructure by XRD, SEM, TEM and their optical properties were measured by UV-Vis spectroscopy. The lattice parameter of the ceria powders was found in the range of 5.399 Å to 5.370 Å. The average crystallite size calculated from XRD was in the range ~ 4 nm to ~ 2.5 nm. The TEM selected area diffraction pattern images clearly showed the ring pattern indicated the powders were polycrystalline nature and there is agglomeration of the particles. Optical band gaps of the powders were in the range 2.71eV to 2.58eV.

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