Optical properties of single-crystalline α-Si3N4 nanobelts

2005 ◽  
Vol 86 (6) ◽  
pp. 061908 ◽  
Author(s):  
Ligong Zhang ◽  
Hua Jin ◽  
Weiyou Yang ◽  
Zhipeng Xie ◽  
Hezhuo Miao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Single Crystalline

Structure and Optical Properties of SnS Nanowire Arrays Prepared with Two-Step Method

2012 ◽  
Vol 476-478 ◽  
pp. 1519-1522 ◽  
Author(s):  
You Dao Lin ◽  
Xin Wen ◽  
Lai Sen Wang ◽  
Guang Hui Yue ◽  
Dong Liang Peng
Keyword(s):  
Optical Properties ◽  
Electrochemical Deposition ◽  
Average Diameter ◽  
Nanowire Arrays ◽  
Step Method ◽  
Single Crystalline ◽  
Uv Visible

Abstract. Single crystalline SnS nanowire arrays have been synthesized by sulfurating the Sn nanowire arrays which were prepared with the electrochemical deposition. The obtained SnS nanowire arrays are charactered with the XRD, SEM, TEM and the UV/Visible/NIR spectrophotometer. And the results indicate that the nanowires with an average diameter of 50 nm and a length of several tens micrometers, which same with the as prepared Sn nanowires. There are two absorption peaks indicate with the direct and indirect bandgaps about the orthorhombic SnS nanowire arrays.

scholarly journals Optical Properties of Spin-Coated TiO2Antireflection Films on Textured Single-Crystalline Silicon Substrates

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Ryosuke Watanabe ◽  
Yohei Eguchi ◽  
Takuya Yamada ◽  
Yoji Saito
Keyword(s):  
Optical Properties ◽  
Crystalline Silicon ◽  
Low Cost ◽  
Incident Light ◽  
Antireflection Coating ◽  
Silicon Wafers ◽  
Reflectance Spectra ◽  
Visible Range ◽  
Single Crystalline Silicon ◽  
Single Crystalline

Antireflection coating (ARC) prepared by a wet process is beneficial for low cost fabrication of photovoltaic cells. In this study, we investigated optical properties and morphologies of spin-coated TiO2ARCs on alkaline textured single-crystalline silicon wafers. Reflectance spectra of the spin-coated ARCs on alkaline textured silicon wafers exhibit no interferences and low reflectance values in the entire visible range. We modeled the structures of the spin-coated films for ray tracing numerical calculation and compared numerically calculated reflectance spectra with the experimental results. This is the first report to clarify the novel optical properties experimentally and theoretically. Optical properties of the spin-coated ARCs without interference are due to the fractional nonuniformity of the thickness of the spin-coated ARCs that cancels out the interference of the incident light.

Pyramid-Shaped Single-Crystalline Nanostructure of Molybdenum with Excellent Mechanical, Electrical, and Optical Properties

2020 ◽  
Vol 12 (21) ◽  
pp. 24218-24230 ◽  
Author(s):  
Yan Shen ◽  
Yuchen Han ◽  
Runze Zhan ◽  
Xuexian Chen ◽  
Shiya Wen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electrical And Optical Properties ◽  
Single Crystalline

Optical and magneto-optical properties of single crystalline uranium nitride

2006 ◽  
Vol 299 (1) ◽  
pp. 225-230 ◽  
Author(s):  
M. Marutzky ◽  
U. Barkow ◽  
J. Schoenes ◽  
R. Troć
Keyword(s):  
Optical Properties ◽  
Single Crystalline ◽  
Uranium Nitride

Porous and Nanoporous Semiconductors and Emerging Applications

2005 ◽  
Vol 876 ◽  
Author(s):  
Helmut Föll ◽  
Jürgen Carstensen ◽  
Stefan Frey
Keyword(s):  
Optical Properties ◽  
Fuel Cells ◽  
Pore Formation ◽  
Large Area ◽  
Paper Briefly ◽  
High Explosives ◽  
Single Crystalline ◽  
Natural Materials ◽  
Porous Semiconductors ◽  
Wide Range

AbstractPores in single crystalline semiconductors can be produced in a wide range of geometries and morphologies, including the “nano” regime. Porous semiconductors may have properties completely different from the bulk, and metamaterials with e.g. optical properties not encountered in natural materials are emerging. Possible applications of porous semiconductors include various novel sensors, but also more “exotic” uses as, e.g. high explosives or electrodes for micro fuel cells. The paper briefly reviews pore formation (including more applied aspects of large area etching), properties of porous semiconductors and emerging applications.

Direct thermal oxidization evaporation growth, structure, and optical properties of single-crystalline nanobelts of molybdenum trioxide

2007 ◽  
Vol 22 (6) ◽  
pp. 1609-1617 ◽  
Author(s):  
W.G. Chu ◽  
L.N. Zhang ◽  
H.F. Wang ◽  
Z.H. Han ◽  
D. Han ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Optical Properties ◽  
Molybdenum Trioxide ◽  
Band Gap Energy ◽  
Diffraction Field ◽  
Large Strains ◽  
Layer By Layer ◽  
X Rays ◽  
Dislocation Configuration ◽  
Single Crystalline

Single-crystalline nanobelts of molybdenum trioxides were grown by direct thermal oxidization evaporation of metal molybdenum foils. Their structures, defects, and optical properties were investigated via x-ray diffraction, field-emission scanning electron microscopy, high-resolution transmission electron microscopy (HRTEM), atomic force microscopy, micro-Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), and ultraviolet-visible spectroscopy (UV-VIS). Single-crystalline nanobelts were identified as an orthorhombic structure with an average stoichiometry of MoO3.02analyzed by energy dispersive spectroscopy of x-rays. The length, width, and thickness of a nanobelt were determined to be parallel to the b, c, and aaxis of the MoO3unit cell, respectively. The thickness of the nanobelt increased by integer multiples of 0.5ain a layer-by-layer fashion during growth. A density of dislocations as high as about 1.2 × 1013cm−2was formed, which may be attributed to relaxation of large strains during cooling. A special dislocation configuration was observed by HRTEM, which was well reproduced by image simulations based on the proposed model. The resulting morphology of nanobelts was proposed to be governed by growth kinetics. Micro-Raman and FTIR spectra were successfully analyzed on the basis of vibration of MoO6octahedra. It was found that micro-Raman spectra were quite dependent on the size of the nanobelts. A band gap energy of 3.04 eV derived from UV-VIS measurements was observed to be red shifted relative to the previously reported experimental values, which may be due to the presence of a high density of defects.

Growth and optical properties of ultra-long single-crystalline ?-Si3N4 nanobelts

2004 ◽  
Vol 80 (7) ◽  
pp. 1419-1423 ◽  
Author(s):  
W. Yang ◽  
L. Zhang ◽  
Z. Xie ◽  
J. Li ◽  
H. Miao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Single Crystalline

Self-catalytic VLS growth and optical properties of single-crystalline GeO2 nanowire arrays

2008 ◽  
Vol 62 (6-7) ◽  
pp. 1010-1013 ◽  
Author(s):  
Yong Su ◽  
Xuemei Liang ◽  
Sen Li ◽  
Yiqing Chen ◽  
Qingtao Zhou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nanowire Arrays ◽  
Single Crystalline ◽  
Vls Growth

STRUCTURAL AND OPTICAL PROPERTIES OF SINGLE CRYSTALLINE BISMUTH NANOPARTICLES IN POLYMER

2013 ◽  
Vol 22 ◽  
pp. 654-659 ◽  
Author(s):  
LUTFUL KABIR ◽  
SWAPAN K. MANDAL
Keyword(s):  
Optical Properties ◽  
Absorption Spectrum ◽  
Structural And Optical Properties ◽  
Chemical Route ◽  
Plasmon Band ◽  
Single Crystalline ◽  
Bismuth Nanoparticles ◽  
Transmission Electron ◽  
Average Size ◽  
Bi Nanoparticles

We report here the structural and optical properties of Bi nanoparticles in polymer (polypyrrole) matrix. The nanoparticles are synthesized following a wet chemical route. The X-ray diffraction data clearly shows the growth of single crystalline Bi nanoparticles within the host polymer. The microstructure of the Bi nanoparticles obtained by transmission electron microscopy (TEM) reveals clearly the formation of spherical shaped nanoparticles of average size∼27 nm with a narrow size distribution. The optical absorption spectrum exhibits a distinct peak at 278 nm which is attributed to the surface plasmon band of Bi nanoparticles. The absorption spectrum is found to be described well following Mie theory.

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