3D superstructures with an orthorhombic lattice assembled by colloidal PbS quantum dots

Nanoscale ◽  
2018 ◽  
Vol 10 (17) ◽  
pp. 8313-8319 ◽  
Author(s):  
Elena V. Ushakova ◽  
Sergei A. Cherevkov ◽  
Aleksandr P. Litvin ◽  
Peter S. Parfenov ◽  
Igor A. Kasatkin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oleic Acid ◽  
Lead Sulfide ◽  
Organic Matrix ◽  
Orthorhombic Lattice ◽  
3D Network ◽  
New Type ◽  
Self Assembled ◽  
Lead Sulfide Quantum Dots ◽  
Pbs Quantum Dots

We report a new type of metamaterial comprising a highly ordered 3D network of 3–7 nm lead sulfide quantum dots self-assembled in an organic matrix formed by amphiphilic ligands (oleic acid molecules).

scholarly journals Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots

Photonics ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 39
Author(s):  
Ivan D. Skurlov ◽  
Evgeniia A. Ponomareva ◽  
Azat O. Ismagilov ◽  
Sergey E. Putilin ◽  
Ilia A. Vovk ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Lead Sulfide ◽  
Figure Of Merit ◽  
Nonlinear Response ◽  
Size Dependence ◽  
Nonlinear Refraction ◽  
Colloidal Solutions ◽  
Third Order ◽  
Lead Sulfide Quantum Dots ◽  
Pbs Quantum Dots

Due to their high resonant third-order nonlinear response, lead sulfide quantum dots (QDs) are potential materials for applications in the field of nonlinear optics. In this paper, we implement the Z-scan method to study the resonant nonlinear response of lead sulfide QDs in colloidal solutions. We managed to measure the purely intrinsic resonant nonlinear response, free of thermal contribution. We report that the lead sulfide QD third-order nonlinear response per QD shows an unconventional increase. A figure of merit for QD nonlinearity grows as a power function with a factor of 2.9.

Unconventional gap state of trapped exciton in lead sulfide quantum dots

2010 ◽  
Vol 21 (45) ◽  
pp. 455402 ◽  
Author(s):  
J E Lewis ◽  
S Wu ◽  
X J Jiang
Keyword(s):  
Quantum Dots ◽  
Lead Sulfide ◽  
Lead Sulfide Quantum Dots ◽  
Gap State

scholarly journals Noncovalent Attachment of PbS Quantum Dots to Single- and Multiwalled Carbon Nanotubes

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Anirban Das ◽  
Eric Hall ◽  
Chien M. Wai
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Dots ◽  
Oleic Acid ◽  
Multiwalled Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Stacking Interactions ◽  
Multiwalled Carbon ◽  
Nir Fluorescence ◽  
Walled Carbon Nanotubes ◽  
Pbs Quantum Dots

Attachment of PbS quantum dots (QD) to single-walled carbon nanotubes (SWNT) and multiwalled carbon nanotubes (MWCNT) is described; wherein commercially obtained PbS-QD of size 2.7 nm, stabilized by oleic acid, are added to a suspension of single- or multiwalled carbon nanotubes (CNT) prefunctionalized noncovalently with 1,2-benzenedimethanethiol (1,2-BDMT) in ethanol. The aromatic part of 1,2-BDMT attaches to the CNT byπ-πstacking interactions, noncovalently functionalizing the CNT. The thiol part of the 1,2-BDMT on the functionalized CNT replaces oleic acid on the surface of the QD facilitating the noncovalent attachment of the QD to the CNT. The composites were characterized by TEM and FTIR spectroscopy. Quenching of NIR fluorescence of the PbS-QD on attachment to the carbon nanotubes (CNT) was observed, indicating FRET from the QD to the CNT.

Lead Sulfide Quantum Dots Mode Locked, Wavelength-Tunable Soliton Fiber Laser

2021 ◽  
Vol 33 (3) ◽  
pp. 119-122
Author(s):  
Ling Yun ◽  
Hancheng Zhang ◽  
Han Cui ◽  
Chen Ding ◽  
Yongqi Ding ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fiber Laser ◽  
Lead Sulfide ◽  
Wavelength Tunable ◽  
Lead Sulfide Quantum Dots

scholarly journals Glycerol–water mediated centrifuge controlled green synthesis of oleic acid capped PbS quantum dots for live cell imaging

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40664-40668 ◽  
Author(s):  
M. Vijaya Bharathi ◽  
Kaustab Ghosh ◽  
Priyankar Paira
Keyword(s):  
Quantum Dots ◽  
Oleic Acid ◽  
Green Synthesis ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Glycerol Water ◽  
Pbs Quantum Dots

Glycerol–water mediated green synthesis of PbS quantum dots (QDs) is introduced utilizing distinctive precipitation strategies for bioimaging application.

scholarly journals Absolute femtosecond measurements of Auger recombination dynamics in lead sulfide quantum dots

2013 ◽  
Vol 41 ◽  
pp. 04035 ◽  
Author(s):  
B. Cho ◽  
W.K. Peters ◽  
V. Tiwari ◽  
A.P. Spencer ◽  
D. Baranov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Lead Sulfide ◽  
Auger Recombination ◽  
Lead Sulfide Quantum Dots ◽  
Recombination Dynamics

Functionalized Graphite Platelets and Lead Sulfide Quantum Dots Enhance Solar Conversion Capability of a Titanium Dioxide/Cadmium Sulfide Assembly

2014 ◽  
Vol 118 (33) ◽  
pp. 18924-18937 ◽  
Author(s):  
P. Naresh Kumar ◽  
Sudip Mandal ◽  
Melepurath Deepa ◽  
Avanish Kumar Srivastava ◽  
Amish G. Joshi
Keyword(s):  
Quantum Dots ◽  
Titanium Dioxide ◽  
Cadmium Sulfide ◽  
Lead Sulfide ◽  
Solar Conversion ◽  
Lead Sulfide Quantum Dots

scholarly journals Ligand dependent oxidation dictates the performance evolution of high efficiency PbS quantum dot solar cells

2020 ◽  
Vol 4 (1) ◽  
pp. 108-115 ◽  
Author(s):  
David Becker-Koch ◽  
Miguel Albaladejo-Siguan ◽  
Vincent Lami ◽  
Fabian Paulus ◽  
Hengyang Xiang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Lead Sulfide ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Continuous Illumination ◽  
Quantum Dot Solar Cells ◽  
The Stability ◽  
Pbs Quantum Dots ◽  
Pbs Quantum Dot

The stability of lead sulfide (PbS) quantum dots (QD) under continuous illumination in oxygenated environments depends on the choice of ligands, determining the evolution of photovoltaic performance of high efficiency PbS QD solar cells.

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