Synthesis and optical properties of nanocomposite based on CdS nanoparticles in a silicon oxide matrix

2018 ◽  
Author(s):  
Yulia V. Kuznetsova ◽  
Irina B. Dorosheva ◽  
Svetlana V. Rempel
Keyword(s):  
Optical Properties ◽  
Silicon Oxide ◽  
Cds Nanoparticles ◽  
Oxide Matrix

Optical Properties of Microcrystalline Silicon in Oxide Matrix through Partial Oxidation of Anodized Porous Silicon

1991 ◽  
Vol 256 ◽  
Author(s):  
Toshimichi Ito ◽  
Toshimichi Ohta ◽  
Osamu Arakaki ◽  
Akio Hiraki
Keyword(s):  
Optical Properties ◽  
Porous Silicon ◽  
Partial Oxidation ◽  
Silicon Oxide ◽  
Light Emission ◽  
Wavelength Region ◽  
Microcrystalline Silicon ◽  
Quantum Size ◽  
Visible Luminescence ◽  
Oxide Matrix

ABSTRACTMicrocrystalline silicon embedded in silicon oxide has been prepared by means of partial oxidation of porous silicon produced anodically from degenerate p-Si wafers. Their optical properties such as absorption coefficients and luminescence have been characterized. Results show blue shifts in absorption and photoluminescence spectra in a visible wavelength region with decreasing size of the microcrystalline Si in the Si oxide matrix. The quantum size effect is discussed as well as possible origins of the observed visible luminescence, including light emission from as-anodized (or H-chemisorbed) porous silicon.

Optically Detected Magnetic Resonance and Double Beam Photoluminescence of CdS/HgS/CdS Nanoparticles

1998 ◽  
Vol 536 ◽  
Author(s):  
H. Porteanu ◽  
A. Glozman ◽  
E. Lifshitz ◽  
A. Eychmüller ◽  
H. Weller
Keyword(s):  
Optical Properties ◽  
Magnetic Resonance ◽  
Cds Nanoparticles ◽  
Electron Hole ◽  
Cladding Layer ◽  
Double Beam ◽  
Optically Detected Magnetic Resonance ◽  
Optically Detected ◽  
Cladding Layers ◽  
Hole Recombination

AbstractCdS/HgS/CdS nanoparticles consist of a CdS core, epitaxially covered by one or two monolayers of HgS and additional cladding layers of CdS. The present paper describes our efforts to identify the influence of CdS/HgS/CdS interfaces on the localization of the photogenerated carriers deduced from the magneto-optical properties of the materials. These were investigated by the utilization of optically detected magnetic resonance (ODMR) and double-beam photoluminescence spectroscopy. A photoluminescence (PL) spectrum of the studied material, consists of a dominant exciton located at the HgS layer, and additional non-excitonic band, presumably corresponding to the recombination of trapped carriers at the interface. The latter band can be attenuated using an additional red excitation. The ODMR measurements show the existence of two kinds of electron-hole recombination. These electron-hole pairs maybe trapped either at a twin packing of a CdS/HgS interface, or at an edge dislocation of an epitaxial HgS or a CdS cladding layer.

Immobilized CdS quantum dots in spherical polyelectrolyte brushes: fabrication, characterization and optical properties

2015 ◽  
Vol 3 (15) ◽  
pp. 3745-3751 ◽  
Author(s):  
Yu Cang ◽  
Rui Zhang ◽  
Guixin Shi ◽  
Jianchao Zhang ◽  
Lixiao Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Cds Nanoparticles ◽  
Basic Solution ◽  
Cds Quantum Dots ◽  
Polyelectrolyte Brushes ◽  
Photochemical Stability ◽  
Spherical Polyelectrolyte Brushes

The SPB@CdS nanoparticles exhibit controllable and reversible photoluminescence with pH as a trigger and strong photochemical stability in basic solution.

Changes in the optical properties of films of silicon nitride, silicon oxinitride, and silicon oxide upon ion irradiation

1977 ◽  
Vol 26 (1) ◽  
pp. 129-131
Author(s):  
N. N. Gerasimenko ◽  
T. I. Kovalevskaya ◽  
V. G. Pan'kin ◽  
K. K. Svitashev ◽  
G. M. Tseitlin
Keyword(s):  
Optical Properties ◽  
Silicon Nitride ◽  
Silicon Oxide ◽  
Ion Irradiation

Effect of Fe doping on structural and optical properties of CdS nanoparticles

2012 ◽  
Author(s):  
G. Murali ◽  
D. Amaranatha Reddy ◽  
B. Poornaparakash ◽  
R. P. Vijayalakshmi
Keyword(s):  
Optical Properties ◽  
Cds Nanoparticles ◽  
Fe Doping ◽  
Structural And Optical Properties

Preparation and optical properties of CdS nanoparticles dispersed in poly(2-(dimethylamino)ethyl methacrylate-co-acrylic acid) co-polymers

2008 ◽  
Vol 30 (7) ◽  
pp. 1208-1212 ◽  
Author(s):  
L.V. Trandafilović ◽  
V. Djoković ◽  
N. Bibić ◽  
M.K. Georges ◽  
T. Radhakrishnan
Keyword(s):  
Optical Properties ◽  
Acrylic Acid ◽  
Cds Nanoparticles ◽  
Ethyl Methacrylate
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