Results 11 to 20 of about 6,752 (248)

Synthesis of Tris(Dimethylamino)Phosphine‐Based InP Quantum Dots and Their Application in Light‐Emitting Diodes: Progress and Perspectives [PDF]

open access: yesExploration
Indium phosphide (InP)‐based quantum dots (QDs) have emerged as promising cadmium‐free alternatives for next‐generation optoelectronic applications, particularly in quantum dot light‐emitting diodes (QLEDs).
Zifeng Zhang   +8 more
doaj   +2 more sources

Effect of size modulation and donor position on intersubbands refractive index changes of a donor within a spherical core/shell/shell semiconductor quantum dot

open access: yesCumhuriyet Science Journal, 2021
In the current study, linear, nonlinear and total relative refractive index changes of a single shallow hydrogenic donor atom confined in semiconductor core/shell/shell quantum dot heterostructure are investigated in detail by compact density matrix ...
Emre Bahadır Al
doaj   +1 more source

Quadratic optical effects in ZnS/CdS/ZnS quantum dot-quantum well

open access: yesResults in Physics, 2019
The third order nonlinear optical susceptibility is investigated within the frame work of the effective-mass approximation, for the ZnS/CdS/ZnS quantum dot-quantum well.
N. Zeiri   +3 more
doaj   +1 more source

Studies on Carrier Recombination in GaN/AlN Quantum Dots in Nanowires with a Core–Shell Structure

open access: yesNanomaterials, 2020
GaN quantum dots embedded in nanowires have attracted much attention due to their superior optical properties. However, due to the large surface-to-volume ratio of the nanowire, the impacts of surface states are the primary issue responsible for the ...
Jun Deng   +12 more
doaj   +1 more source

Charge-sensing of a Ge/Si core/shell nanowire double quantum dot using a high-impedance superconducting resonator

open access: yesMaterials for Quantum Technology, 2023
Spin qubits in germanium are a promising contender for scalable quantum computers. Reading out of the spin and charge configuration of quantum dots formed in Ge/Si core/shell nanowires is typically performed by measuring the current through the nanowire.
J H Ungerer   +8 more
doaj   +1 more source

Engineering Auger recombination in colloidal quantum dots via dielectric screening

open access: yesNature Communications, 2019
Designing core/shell quantum dots with desired optoelectronic properties remains a challenge. Here, the authors investigate the negative and positive trions dynamics within a quantum dot, proposing an Auger engineering strategy based on geometry ...
Xiaoqi Hou   +9 more
doaj   +1 more source

Ambipolar Charge Storage in Type‐I Core/Shell Semiconductor Quantum Dots toward Optoelectronic Transistor‐Based Memories

open access: yesAdvanced Science, 2021
Efficient charge storage media play a pivotal role in transistor‐based memories and thus are under intense research. In this work, the charge storage ability of type‐I InP/ZnS core/shell quantum dots is well revealed through studying a pentacene‐based ...
Hao hu   +6 more
doaj   +1 more source

Green Synthesis of InP/ZnS Core/Shell Quantum Dots for Application in Heavy-Metal-Free Light-Emitting Diodes

open access: yesNanoscale Research Letters, 2017
Quantum dot light-emitting diodes (QD-LEDs) have been considered as potential display technologies with the characterizations of high color purity, flexibility, transparency, and cost efficiency.
Tsung-Rong Kuo   +6 more
doaj   +1 more source

Cadmium‐Doped Zinc Sulfide Shell as a Hole Injection Springboard for Red, Green, and Blue Quantum Dot Light‐Emitting Diodes

open access: yesAdvanced Science, 2022
A new strategy is developed in which cadmium‐doped zinc sulfide (CdZnS) is used as the outermost shell to synthesize red, green, and blue (RGB) quantum dots (QDs) with the core/shell structures of CdZnSe/ZnSe/ZnS/CdZnS, CdZnSe/ZnSe/ZnSeS/CdZnS, and ...
Bochen Liu   +9 more
doaj   +1 more source

Shallow Donor Impurity States with Excitonic Contribution in GaAs/AlGaAs and CdTe/CdSe Truncated Conical Quantum Dots under Applied Magnetic Field

open access: yesNanomaterials, 2021
Using the effective mass approximation in a parabolic two-band model, we studied the effects of the geometrical parameters, on the electron and hole states, in two truncated conical quantum dots: (i) GaAs-(Ga,Al)As in the presence of a shallow donor ...
Lorenz Pulgar-Velásquez   +9 more
doaj   +1 more source

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