Directed Assembly of Quantum Dots Using Brush Block Copolymers for Well-Ordered Nonlinear Optical Nanocomposites

2016 ◽  
Vol 49 (14) ◽  
pp. 5068-5075 ◽  
Author(s):  
Dong-Po Song ◽  
Shiva Shahin ◽  
Wanting Xie ◽  
Soroush Mehravar ◽  
Xiaohui Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Block Copolymers ◽  
Nonlinear Optical ◽  
Directed Assembly

scholarly journals Hybrid fluorescent liquid crystalline composites: directed assembly of quantum dots in liquid crystalline block copolymer matrices

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15264-15273
Author(s):  
Miron Bugakov ◽  
Sharifa Abdullaeva ◽  
Pavel Samokhvalov ◽  
Sergey Abramchuk ◽  
Valery Shibaev ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spatial Distribution ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Hybrid Composite ◽  
Liquid Crystalline ◽  
Composite Films ◽  
Directed Assembly ◽  
Molecular Architecture ◽  
Copolymer Matrices

Spatial distribution of QDs within hybrid composite films was programed by varying the molecular architecture of the host LC block copolymers.

scholarly journals Scalable Production of Boron Quantum Dots for Broadband Ultrafast Nonlinear Optical Performance

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 687
Author(s):  
Shuolei Meng ◽  
Qianyuan Chen ◽  
Hongjian Lin ◽  
Feng Zhou ◽  
Youning Gong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Relaxation Time ◽  
Nonlinear Optical ◽  
Average Diameter ◽  
Optical Devices ◽  
Nonlinear Optical Properties ◽  
Saturable Absorption ◽  
Nonlinear Optical Susceptibility ◽  
Tandem Structure

A simple and effective approach based on the liquid phase exfoliation (LPE) method has been put forward for synthesizing boron quantum dots (BQDs). By adjusting the interactions between bulk boron and various solvents, the average diameter of produced BQDs is about 7 nm. The nonlinear absorption (NLA) responses of as-prepared BQDs have been systematically studied at 515 nm and 1030 nm. Experimental results prove that BQDs possess broadband saturable absorption (SA) and good third-order nonlinear optical susceptibility, which are comparable to graphene. The fast relaxation time and slow relaxation time of BQDs at 515 nm and 1030 nm are about 0.394–5.34 ps and 4.45–115 ps, respectively. The significant ultrafast nonlinear optical properties can be used in optical devices. Here, we successfully demonstrate all-optical diode application based on BQDs/ReS2 tandem structure. The findings are essential for understanding the nonlinear optical properties in BQDs and open a new pathway for their applications in optical devices.

Few-Particle Effects in Nonlinear Optical Spectra of Semiconductor Quantum Dots

1999 ◽  
Vol 571 ◽  
Author(s):  
Ulrich Hohenesteri ◽  
Fausto Rossi ◽  
Elisa Molinari
Keyword(s):  
Quantum Dots ◽  
Density Matrix ◽  
Nonlinear Optical ◽  
Coherent Control ◽  
Optical Spectra ◽  
Carrier Dynamics ◽  
Semiconductor Quantum Dots ◽  
Nonequilibrium Carrier ◽  
Optical Nonlinearities ◽  
Matrix Approach

ABSTRACTWe present a density-matrix approach for the description of nonequilibrium carrier dynamics in optically excited semiconductor quantum dots, that explicitly accounts for exciton-exciton as well as exciton-carrier interactions. Within this framework, we analyze few-particle effects in the optical spectra and provide a consistent description of additional peaks appearing at high photoexcitation density. We discuss possible applications of such optical nonlinearities in future coherent-control experiments.

scholarly journals Electronic properties and third-order optical nonlinearities in tetragonal chalcopyrite AgInS2, AgInS2/ZnS and cubic spinel AgIn5S8, AgIn5S8/ZnS quantum dots

2017 ◽  
Vol 5 (1) ◽  
pp. 149-158 ◽  
Author(s):  
Bartłomiej Cichy ◽  
Dominika Wawrzynczyk ◽  
Marek Samoc ◽  
Wiesław Stręk
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Electronic Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Optical Nonlinearities ◽  
Third Order

Electronic as well as third-order nonlinear optical properties of chalcopyrite AgInS2 and non-stoichiometric spinel AgIn5S8 quantum dots compared with corresponding Zn2+ alloyed compounds are presented in this work.

Nonlinear optical characterisation of CdS and PbS quantum dots dispersed in a glass matrix

2004 ◽  
Vol 1 (4) ◽  
pp. 1001-1004 ◽  
Author(s):  
F. D'Amore ◽  
S. M. Pietralunga ◽  
P. Lorusso ◽  
M. Martinelli ◽  
A. Zappettini ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Glass Matrix ◽  
Nonlinear Optical ◽  
Pbs Quantum Dots

Third-Order Nonlinear Optical Properties of Infrared Emitting PbS and PbSe Quantum Dots

2016 ◽  
Vol 120 (38) ◽  
pp. 21939-21945 ◽  
Author(s):  
Dominika Wawrzynczyk ◽  
Janusz Szeremeta ◽  
Marek Samoc ◽  
Marcin Nyk
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Third Order
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