Combination of Cation Exchange and Quantized Ostwald Ripening for Controlling Size Distribution of Lead Chalcogenide Quantum Dots

We firstly synthesized uniform Zn3X2 (X=P, As) quantum dots (QDs) using stable, environmentally friendly zinc precursor instead of organometallic precursor such as Me2Zn or Et2Zn, and controlled the QD size...

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Nucleation of Ga droplets self-assembly on GaAs(111)A substrates

Scientific Reports ◽

10.1038/s41598-021-86339-3 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Artur Tuktamyshev ◽

Alexey Fedorov ◽

Sergio Bietti ◽

Stefano Vichi ◽

Riccardo Tambone ◽

...

Keyword(s):

Quantum Dots ◽

Size Distribution ◽

Self Assembly ◽

Cluster Size ◽

Droplet Size Distribution ◽

Local Environment ◽

The Self ◽

Critical Cluster ◽

Droplet Nucleation ◽

High Degree

AbstractWe investigated the nucleation of Ga droplets on singular GaAs(111)A substrates in the view of their use as the seeds for the self-assembled droplet epitaxial quantum dots. A small critical cluster size of 1–2 atoms characterizes the droplet nucleation. Low values of the Hopkins-Skellam index (as low as 0.35) demonstrate a high degree of a spatial order of the droplet ensemble. Around $$350\,^{\circ }\hbox {C}$$ 350 ∘ C the droplet size distribution becomes bimodal. We attribute this observation to the interplay between the local environment and the limitation to the adatom surface diffusion introduced by the Ehrlich–Schwöbel barrier at the terrace edges.

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Near-infrared lead chalcogenide quantum dots: Synthesis and applications in light emitting diodes

Chinese Physics B ◽

10.1088/1674-1056/ab50fa ◽

2019 ◽

Vol 28 (12) ◽

pp. 128504 ◽

Cited By ~ 2

Author(s):

Haochen Liu ◽

Huaying Zhong ◽

Fankai Zheng ◽

Yue Xie ◽

Depeng Li ◽

...

Keyword(s):

Quantum Dots ◽

Near Infrared ◽

Light Emitting Diodes ◽

Lead Chalcogenide ◽

Light Emitting

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Fully numerical analysis of III-nitride based quantum dot lasers considering the quantum dots size distribution

Optik ◽

10.1016/j.ijleo.2014.08.133 ◽

2015 ◽

Vol 126 (1) ◽

pp. 119-122 ◽

Cited By ~ 5

Author(s):

P. Navaeipour ◽

A. Asgari

Keyword(s):

Quantum Dots ◽

Numerical Analysis ◽

Quantum Dot ◽

Size Distribution ◽

Quantum Dot Lasers

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Size distribution effects on self-assembled InAs quantum dots

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-007-9205-9 ◽

2007 ◽

Vol 18 (S1) ◽

pp. 191-194 ◽

Cited By ~ 6

Author(s):

S. I. Jung ◽

H. Y. Yeo ◽

I. Yun ◽

J. Y. Leem ◽

I. K. Han ◽

...

Keyword(s):

Quantum Dots ◽

Size Distribution ◽

Inas Quantum Dots ◽

Self Assembled

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Cation Exchange-Based Facile Aqueous Synthesis of Small, Stable, and Nontoxic Near-Infrared Ag2Te/ZnS Core/Shell Quantum Dots Emitting in the Second Biological Window

ACS Applied Materials & Interfaces ◽

10.1021/am302933x ◽

2013 ◽

Vol 5 (3) ◽

pp. 1149-1155 ◽

Cited By ~ 46

Author(s):

Chi Chen ◽

Xuewen He ◽

Li Gao ◽

Nan Ma

Keyword(s):

Quantum Dots ◽

Cation Exchange ◽

Near Infrared ◽

Core Shell ◽

Aqueous Synthesis

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Optical transformation of a CdTe quantum dot-based paper sensor for a visual fluorescence immunoassay induced by dissolved silver ions

Journal of Materials Chemistry B ◽

10.1039/c6tb03042d ◽

2017 ◽

Vol 5 (4) ◽

pp. 826-833 ◽

Cited By ~ 49

Author(s):

Zhenzhen Lin ◽

Shuzhen Lv ◽

Kangyao Zhang ◽

Dianping Tang

Keyword(s):

Quantum Dots ◽

Quantum Dot ◽

Cation Exchange ◽

Carcinoembryonic Antigen ◽

Silver Ions ◽

Fluorescence Immunoassay ◽

Cation Exchange Reaction ◽

Optical Transformation ◽

Cdte Quantum Dot ◽

Paper Sensor

This work designs a visual fluorescence immunoassay for carcinoembryonic antigen based on structural and optical transformation of CdTe quantum dots immobilized on paper by cation-exchange reaction.

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