Size- and Temperature-Dependent Carrier Dynamics in Oleic Acid Capped PbS Quantum Dots

2013 ◽  
Vol 117 (4) ◽  
pp. 1887-1892 ◽  
Author(s):  
Peristera Andreakou ◽  
Mael Brossard ◽  
Chunyong Li ◽  
Maria Bernechea ◽  
Gerasimos Konstantatos ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Oleic Acid ◽  
Carrier Dynamics ◽  
Temperature Dependent ◽  
Pbs Quantum Dots

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).

Temperature-Dependent Permeability of the Ligand Shell of PbS Quantum Dots Probed by Electron Transfer to Benzoquinone

2015 ◽  
Vol 6 (14) ◽  
pp. 2841-2846 ◽  
Author(s):  
Kenneth O. Aruda ◽  
Miriam Bohlmann Kunz ◽  
Mario Tagliazucchi ◽  
Emily A. Weiss
Keyword(s):  
Quantum Dots ◽  
Electron Transfer ◽  
Temperature Dependent ◽  
Ligand Shell ◽  
Pbs Quantum Dots

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.

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.

Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping

2010 ◽  
Vol 82 (12) ◽  
Author(s):  
Maxim S. Gaponenko ◽  
Andrey A. Lutich ◽  
Nikolai A. Tolstik ◽  
Alexei A. Onushchenko ◽  
Alexander M. Malyarevich ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exciton State ◽  
Temperature Dependent ◽  
Carrier Trapping ◽  
State Splitting ◽  
Pbs Quantum Dots ◽  
Temperature Dependent Photoluminescence

Temperature-Dependent Energy Gap Shift and Thermally Activated Transition in Multilayer CdTe/ZnTe Quantum Dots

2015 ◽  
Vol 15 (10) ◽  
pp. 8120-8124
Author(s):  
Minh Tan Man ◽  
Hong Seok Lee
Keyword(s):  
Quantum Dots ◽  
Energy Gap ◽  
Average Energy ◽  
Growth Conditions ◽  
Carrier Dynamics ◽  
Phonon Coupling ◽  
Temperature Quenching ◽  
Temperature Dependent ◽  
Thermally Activated ◽  
Best Fit

We investigated the influence of growth conditions on carrier dynamics in multilayer CdTe/ZnTe quantum dots (QDs) by monitoring the temperature dependence of the photoluminescence emission energy. The results were analyzed using the empirical Varshni and O’Donnell relations for temperature variation of the energy gap shift. Best fit values showed that the thermally activated transition between two different states occurs due to band low-temperature quenching with values separated by 5.0–6.5 meV. The addition of stack periods in multilayer CdTe/ZnTe QDs plays an important role in the energy gap shift, where the exciton binding energy is enhanced, and, conversely, the exciton-phonon coupling strength is suppressed with an average energy of 19.3–19.8 meV.

Temperature-dependent photoluminescence Stokes shift in PbS quantum dots

2013 ◽  
Vol 53 ◽  
pp. 63-65 ◽  
Author(s):  
Maxim S. Gaponenko ◽  
Nikolai A. Tolstik ◽  
Andrey A. Lutich ◽  
Alexei A. Onushchenko ◽  
Konstantin V. Yumashev
Keyword(s):  
Quantum Dots ◽  
Stokes Shift ◽  
Temperature Dependent ◽  
Pbs Quantum Dots ◽  
Temperature Dependent Photoluminescence

scholarly journals Size dependence of carrier dynamics and carrier multiplication in PbS quantum dots

2011 ◽  
Vol 83 (15) ◽  
Author(s):  
Gero Nootz ◽  
Lazaro A. Padilha ◽  
Larissa Levina ◽  
Vlad Sukhovatkin ◽  
Scott Webster ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Size Dependence ◽  
Carrier Dynamics ◽  
Carrier Multiplication ◽  
Pbs Quantum Dots
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