scholarly journals Электрон-фононное взаимодействие в композитах с колллоидными квантовыми точками: исследование методами люминесцентной спектроскопии и комбинационного рассеяния света

2022 ◽  
Vol 130 (1) ◽  
pp. 146
Author(s):  
К.Р. Каримуллин ◽  
А.И. Аржанов ◽  
Н.В. Суровцев ◽  
А.В. Наумов
Keyword(s):  
Quantum Dots ◽  
Colloidal Solution ◽  
Low Frequency ◽  
Luminescence Spectra ◽  
Thin Polymer Film ◽  
Phonon Interaction ◽  
Model Calculations ◽  
Electron Phonon Interaction ◽  
Thin Polymer ◽  
The Matrix

The temperature-dependent luminescence spectra were analyzed to determine the parameters of the electron-phonon interaction (Huang-Rhys factor and the average phonon energy) for nanocomposites with colloidal CdSe/CdS/ZnS quantum dots (deposited on the surface of a glass substrate and embedded in a thin polymer film of polyisobutylene, and in a frozen colloidal solution in toluene). The measured values of the parameters are analyzed in comparison with model calculations and data obtained using the low-frequency Raman spectroscopy. It is found that in the case of a vitrified colloidal solution of quantum dots in toluene, the matrix effect leads to a noticeable change in the parameters of the electron-phonon interaction.

scholarly journals Анализ температурной зависимости спектров экситонной люминесценции квантовых точек селенида кадмия, выращенных в жидкокристаллической матрице-=SUP=-*-=/SUP=-

2019 ◽  
Vol 126 (1) ◽  
pp. 50
Author(s):  
К.А. Магарян ◽  
К.Р. Каримуллин ◽  
И.А. Васильева ◽  
А.В. Наумов
Keyword(s):  
Quantum Dots ◽  
Liquid Crystal ◽  
Theoretical Model ◽  
Phonon Energy ◽  
Luminescence Spectra ◽  
Cdse Quantum Dots ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Temperature Dependences ◽  
Rhys Factor

AbstractThe temperature dependences of the positions of maxima of exciton bands in the luminescence spectra of liquid crystal nanocomposites with CdSe quantum dots with sizes of 1.8 and 2.3 nm at T = 77–300 K have been analyzed. The analysis under the theoretical model taking into account the electron–phonon interaction inside quantum dots has made it possible to calculate the values of the Huang–Rhys factor and average phonon energy in nanocrystals under study.

scholarly journals Electron-phonon interaction in colloidal CdSe quantum dots embedded in different solid matrices

2020 ◽  
Vol 1461 ◽  
pp. 012114
Author(s):  
K R Karimullin ◽  
A I Arzhanov ◽  
A E Es’kova ◽  
K A Magaryan ◽  
A V Naumov
Keyword(s):  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Solid Matrices

scholarly journals Electron-phonon interaction in non-polar quantum dots induced by the amorphous polar environment

JETP Letters ◽  
2010 ◽  
Vol 90 (10) ◽  
pp. 683-687 ◽  
Author(s):  
A. N. Poddubny ◽  
S. V. Goupalov ◽  
V. I. Kozub ◽  
I. N. Yassievich
Keyword(s):  
Quantum Dots ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Polar Environment
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