Results 211 to 220 of about 6,752 (248)

Synthesis of Core–Shell Quantum Dots and Their Potential Application

2013
We report the synthesis of core–shell CdSe/ZnS, CdSe/CdS, CdSe/CdS/ZnS nanoparticles. Fluorescent properties of these core/shell nanoparticles depends on the type of ions present on the surface of nanoparticles; a cation-rich surface enhances the emission intensity, while an anion-rich surface leads to deterioration of the fluorescence signal.
Udit Soni, Vikas Arora, Gurpal Singh, Manzoor Hussain, Sameer Sapra   +4 more
openaire   +1 more source

Subband energy of an inverted core shell quantum dot

Materials Today: Proceedings, 2020
Abstract The subband energy of an Inverted core shell structure is computed for a GaAs/AlxGa1−xAs Quantum dot in the effective mass approximation. The effect of shell thickness and size of the dot on the subband energy is studied. It is seen that the subband energy is affected by core as well as shell size.
openaire   +1 more source

Core/Shell Quantum-Dot-Sensitized Solar Cells

2020
Colloidal quantum dots (QDs) exhibit size-/shape-/composition-dependent optoelectronic properties due to quantum confinement and considered as building blocks for several optoelectronic devices. However, QDs possess a high density of surface trap states, which act as non-radiative carrier recombination centers, thereby reducing the overall performance ...
openaire   +1 more source

ZnO–Nanocarbons Core–Shell Hybrid Quantum Dots

2016
New functional nanoparticle of partially encircled ZnO–graphene (C60, CNTs) consolidated hybrid quantum dots with quasi-core–shell structure can be synthesized. The chemical reaction of embryonic ZnO inner QDs with oxygen-contained functional groups (epoxy, hydroxy, carbonyl, and carboxyl) at defect-like sites generated on acid-treated graphite powder ...
openaire   +1 more source

Optical Properties in a ZnS/CdS/ZnS Core/Shell/Shell Spherical Quantum Dot: Electric and Magnetic Field and Donor Impurity Effects

Nanomaterials, 2023
J C Martínez-Orozco, R L Restrepo, JOSÉ Sierra Ortega   +2 more
exaly  

Electron energy spectrum of the non-concentric spherical core-shell quantum dot

Micro and Nanostructures, 2023
Roman Leshko, I V Bilynskyi
exaly  

Magnetic field and core size dependent opto-electronic properties of an impurity in CdS/ZnS core/shell quantum dot

Physica B: Condensed Matter, 2022
John Peter
exaly  

Synthesis of core/shell quantum dots for diagnostic

2015
In this paper, synthesis of colloidal core and core/shell quantum dots (QDs) was described. First, CdTe QDs capped with glutathione, thioglycolic or mercaptopropionic acid were prepared in aqueous phase, and used for synthesis of colloidal core/shell CdTe/ZnS QDs.
openaire   +1 more source

Strategy trends of core/multiple shell for quantum dot-based heterojunction thin film solar cells

Australian Journal of Electrical and Electronics Engineering, 2022
Ahmed Thabet Mohamed
exaly  

The electron gas in the core/shell cylindrical quantum dot: Thermodynamic and diamagnetic properties

Micro and Nanostructures, 2023
E M Kazaryan, H A Sarkisyan, D B Hayrapetyan   +2 more
exaly