Excitonic recombination dynamics mediated by polymorph transformation in cadmium sulfide nanocrystals

2016 ◽  
Vol 4 (28) ◽  
pp. 6784-6789 ◽  
Author(s):  
Pan Wang ◽  
Zhifang Li ◽  
Tianye Yang ◽  
Zhiyang Wang ◽  
Pinwen Zhu ◽  
...  
Keyword(s):  
Wave Function ◽  
Cadmium Sulfide ◽  
Cds Nanocrystals ◽  
Polymorph Transformation ◽  
Excitonic Recombination ◽  
Recombination Dynamics ◽  
Sulfide Nanocrystals

The excitonic recombination dynamics could be mediated by the different bandgaps and wave function overlaps in polymorphic CdS nanocrystals.

scholarly journals Hot excitons are responsible for increasing photoluminescence blinking activity in single lead sulfide/cadmium sulfide nanocrystals

2018 ◽  
Vol 54 (5) ◽  
pp. 495-498 ◽  
Author(s):  
Jia-Shiang Chen ◽  
Huidong Zang ◽  
Mingxing Li ◽  
Mircea Cotlet
Keyword(s):  
Excitation Energy ◽  
Cadmium Sulfide ◽  
Lead Sulfide ◽  
Cds Nanocrystals ◽  
Photon Excitation ◽  
Kinetics Of ◽  
Sulfide Nanocrystals

The kinetics of PL blinking for isolated PbS/CdS nanocrystals changes with the photon excitation energy, with PL blinking increasing in frequency and changing from a two-state to a multistate on/off switching when the excitation energy changes from 1Sh–1Se (≈1.4 eV) to 1Ph–1Pe (≈2.4 eV).

Synthesis, structural and optical properties of Sm3+ and Nd3+ doped cadmium sulfide nanocrystals

2014 ◽  
Vol 52 ◽  
pp. 128-133 ◽  
Author(s):  
Saravanan L ◽  
Jayavel R ◽  
Pandurangan A ◽  
Liu Jih-Hsin ◽  
Miao Hsin-Yuan
Keyword(s):  
Optical Properties ◽  
Cadmium Sulfide ◽  
Structural And Optical Properties ◽  
Sulfide Nanocrystals

A stochastic model, simulation, and application to aggregation of cadmium sulfide nanocrystals upon evaporation of the Langmuir–Blodgett matrix

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Kirill Svit ◽  
Konstantin Zhuravlev ◽  
Sergey Kireev ◽  
Karl K. Sabelfeld
Keyword(s):  
Stochastic Model ◽  
Cadmium Sulfide ◽  
Model Simulation ◽  
Surrounding Medium ◽  
Real Life ◽  
Langmuir Blodgett ◽  
Cluster Aggregation ◽  
Aggregation Processes ◽  
The Matrix ◽  
Sulfide Nanocrystals

Abstract A stochastic model of nanocrystals clusters formation is developed and applied to simulate an aggregation of cadmium sulfide nanocrystals upon evaporation of the Langmuir–Blodgett matrix. Simulations are compared with our experimental results. The stochastic model suggested governs mobilities both of individual nanocrystals and its clusters (arrays). We give a comprehensive analysis of the patterns simulated by the model, and study an influence of the surrounding medium (solvent) on the aggregation processes. In our model, monomers have a finite probability of separation from the cluster which depends on the temperature and binding energy between nanocrystals, and can also be redistributed in the composition of the cluster, leading to its compaction. The simulation results obtained in this work are compared with the experimental data on the aggregation of CdS nanocrystals upon evaporation of the Langmuir–Blodgett matrix. This system is a typical example from real life and is noteworthy in that the morphology of nanocrystals after evaporation of the matrix cannot be described exactly by a model based only on the motion of individual nanocrystals or by a cluster-cluster aggregation model.

Silica-anchored cadmium sulfide nanocrystals for the optical detection of copper(II)

2020 ◽  
Vol 187 (6) ◽  
Author(s):  
Tao Xie ◽  
Xufeng Zhong ◽  
Zhengjie Liu ◽  
Chenggen Xie
Keyword(s):  
Cadmium Sulfide ◽  
Optical Detection ◽  
Sulfide Nanocrystals
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