نتایج جستجو برای: zno nanocrystals
تعداد نتایج: 29687 فیلتر نتایج به سال:
The present paper reports facile synthesis by simple chemical precipitation method for Zinc Oxide (ZnO) nanoparticles with cerium (Ce) and nickel (Ni) co-doped ZnO nanocrystals. different optimum conditions are analyzed in dual metallic (Ce/Ni) doped nanoparticles. Successful incorporation of is predicted X-ray diffraction (XRD) photoelectron spectroscopy (XPS). Additionally, optical effects we...
We report the large-scale synthesis of uniform-sized hexagonal pyramid-shaped ZnO nanocrystals by the thermolysis of Zn-oleate complex, which was prepared from the reaction of inexpensive and environmentally friendly reagents such as zinc chloride and sodium oleate. Under optimized reaction conditions, we were able to synthesize as much as 2.83 g using 300 mL of oleylamine and 90 mL (284 mmol) ...
Zinc oxysulfide nanocrystals with zinc blende phase are synthesized through a wet-chemical method. An affirmation of the crystal structure, elemental homogeneity and phase transformation is obtained by X-ray diffraction and authenticated by electron micrographic studies. Theoretical observations have strongly supported the thermodynamic solubility limit for its (30%) formation. An anomalous ban...
Nonlinear optical nanocrystals have been recently introduced as a promising alternative to fluorescent probes for multiphoton microscopy. We present for the first time a complete survey of the properties of five nanomaterials (KNbO(3), LiNbO(3), BaTiO(3), KTP, and ZnO), describing their preparation and stabilization and providing quantitative estimations of their nonlinear optical response. In ...
Related Articles Long wavelength (>1.55μm) room temperature emission and anomalous structural properties of InAs/GaAs quantum dots obtained by conversion of In nanocrystals Appl. Phys. Lett. 102, 073103 (2013) Intraband optical transition in InGaAs/GaAs pyramidal quantum dots J. Appl. Phys. 113, 064310 (2013) Development of polaron-transformed explicitly correlated full configuration interactio...
Structural characterisations using the SAXS technique in a number of nanoheterogeneous materials and liquid solutions are reviewed. The studied systems are protein (lysozyme)/water solutions, colloidal ZnO particles/water sols, nanoporous NiO-based xerogels, hybrid organic-inorganic siloxane-PEG and PPG nanocomposites and PbTe semiconductor nanocrystals embedded in a glass matrix. These investi...
Conduction band electrons in colloidal ZnO quantum dots have been prepared photochemically and examined by electron paramagnetic resonance spectroscopy. Nanocrystals of 4.6 nm diameter containing single S-shell conduction band electrons have g(*)=1.962 and a room-temperature ensemble spin-dephasing time of T(2)(*)=25 ns, as determined from linewidth analysis. Increasing the electron population ...
Related Articles All-optical tuning of the Stokes shift in PbS quantum dots Appl. Phys. Lett. 102, 071905 (2013) Long wavelength (>1.55μm) room temperature emission and anomalous structural properties of InAs/GaAs quantum dots obtained by conversion of In nanocrystals Appl. Phys. Lett. 102, 073103 (2013) Intraband optical transition in InGaAs/GaAs pyramidal quantum dots J. Appl. Phys. 113, 0643...
CdSexTe1-x semiconductor nanocrystals (NCs), being rod-shaped/irregular dot-shaped in morphology, have been fabricated via a simple hot-injection method. The NCs composition is well controlled through varying molar ratios of Se to Te precursors. Through changing the composition of the CdSexTe1-x NCs, the spectral absorption of the NC thin film between 570-800 nm is proved to be tunable. It is s...
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