Photodynamic Effects in Nanocomposites Based on Quantum Dots of Cadmium Sulfide Embedded in a Silicate Matrix, in their Interaction with the Laser Beam

2014 ◽  
Vol 213 ◽  
pp. 186-191 ◽  
Author(s):  
Alexander A. Sergeev ◽  
Sergey S. Voznesenskiy ◽  
Anna N. Galkina ◽  
Aleksandr Nepomnyaschiy ◽  
Kseniya M. Sergeeva
Keyword(s):  
Quantum Dots ◽  
Refractive Index ◽  
Optical Properties ◽  
Laser Radiation ◽  
Laser Beam ◽  
Cadmium Sulfide ◽  
Local Change ◽  
Silicate Matrix ◽  
Cds Quantum Dots ◽  
Exposure Conditions

In this paper we study the possibility of modifying the optical properties of nanocomposites based on CdS quantum dots embedded in a silicate matrix, in their interaction with the laser radiation. It was found that the action of laser radiation leads to local change in the refractive index of the nanocomposite, the dynamics of which depends on the exposure conditions.

scholarly journals Effect of dopant concentration and the role of ZnS shell on optical properties of Sm3+ doped CdS quantum dots

RSC Advances ◽  
2021 ◽  
Vol 11 (14) ◽  
pp. 7961-7971
Author(s):  
N. D. Vinh ◽  
P. M. Tan ◽  
P. V. Do ◽  
S. Bharti ◽  
V. X. Hoa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Dopant Concentration ◽  
Core Shell ◽  
Cds Quantum Dots ◽  
Cds Qds

The role of samarium (Sm) dopant on the structural, morphological, and optical properties of CdS QDs and CdS/ZnS core/shell QDs was methodically reported.

Immobilized CdS quantum dots in spherical polyelectrolyte brushes: fabrication, characterization and optical properties

2015 ◽  
Vol 3 (15) ◽  
pp. 3745-3751 ◽  
Author(s):  
Yu Cang ◽  
Rui Zhang ◽  
Guixin Shi ◽  
Jianchao Zhang ◽  
Lixiao Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Cds Nanoparticles ◽  
Basic Solution ◽  
Cds Quantum Dots ◽  
Polyelectrolyte Brushes ◽  
Photochemical Stability ◽  
Spherical Polyelectrolyte Brushes

The SPB@CdS nanoparticles exhibit controllable and reversible photoluminescence with pH as a trigger and strong photochemical stability in basic solution.

Preparation and non-linear optical properties of CdS quantum dots in Na2O-B2O3-SiO2 glasses by the sol-gel technique

1996 ◽  
Vol 31 (2) ◽  
pp. 423-430 ◽  
Author(s):  
T. Takada ◽  
J. D. Mackenzie ◽  
M. Yamane ◽  
K. Kang ◽  
N. Peyghambarian ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Sol Gel ◽  
Cds Quantum Dots ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Gel Technique ◽  
Linear Optical

Optical Properties of CdS Quantum Dots on Graphene

2018 ◽  
Vol 59 (4) ◽  
pp. 870-876 ◽  
Author(s):  
O. V. Sedelnikova ◽  
C. P. Ewels ◽  
L. G. Bulusheva ◽  
A. V. Okotrub
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Cds Quantum Dots

scholarly journals Local field-induced optical properties of Ag-coated CdS quantum dots

2006 ◽  
Vol 14 (17) ◽  
pp. 7994 ◽  
Author(s):  
Koo-Chul Je ◽  
Honglyoul Ju ◽  
Mona Treguer ◽  
Thierry Cardinal ◽  
Seung-Han Park
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Local Field ◽  
Cds Quantum Dots

OPTICAL PROPERTIES OF CdTe AND CdS QUANTUM DOTS IN GLASS

1992 ◽  
Vol 01 (01) ◽  
pp. 25-50 ◽  
Author(s):  
V. ESCH ◽  
K. KANG ◽  
B. FLUEGEL ◽  
Y.Z. HU ◽  
G. KHITROVA ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Optical Nonlinearities ◽  
Cds Quantum Dots ◽  
Temperature Dependent ◽  
Linear Absorption ◽  
Crystallite Sizes ◽  
Band Mixing ◽  
Quantum Confined ◽  
Coulomb Effects

We summarize the linear and nonlinear optical properties of a variety of CdTe and CdS quantum dots in glass. The measured linear absorption of the CdTe sample is compared with calculations involving valence-band mixing due to the quantum confinement. The temperature dependence of the lowest quantum-confined transition and its linewidth for samples with various crystallite sizes are measured and compared with a simple model. It is found that the shift of the energetically lowest quantum-confined transition as a function of temperature is the same as the temperature-dependent band-gap reduction in bulk materials. Excitation of the sample with pulses ranging from femtoseconds to microseconds allows distinguishing between various mechanisms responsible for the observed optical nonlinearities. At very early times, phase-space filling and Coulomb interaction between the excited charged carriers are responsible for the absorption changes. At later times, Coulomb effects due to “trapped” carriers remain and last for nanoseconds or microseconds.

Photoinduced Degradation of the Optical Properties of Colloidal Ag2S and CdS Quantum Dots Passivated by Thioglycolic Acid

2018 ◽  
Vol 124 (5) ◽  
pp. 681-686 ◽  
Author(s):  
M. S. Smirnov ◽  
O. V. Ovchinnikov ◽  
I. G. Grevtseva ◽  
A. I. Zvyagin ◽  
A. S. Perepelitsa ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Thioglycolic Acid ◽  
Cds Quantum Dots
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