Size-Dependent Optical Properties of Colloidal CdS Quantum Dots Passivated by Thioglycolic Acid
- 作者: Kondratenko T.1, Smirnov M.1, Ovchinnikov O.1, Shabunya-Klyachkovskaya E.2, Matsukovich A.2, Zvyagin A.1, Vinokur Y.1
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隶属关系:
- Voronezh State University
- Stepanov Institute of Physics, National Academy of Sciences of Belarus
- 期: 卷 52, 编号 9 (2018)
- 页面: 1137-1144
- 栏目: Semiconductor Structures, Low-Dimensional Systems, and Quantum Phenomena
- URL: https://journals.rcsi.science/1063-7826/article/view/204000
- DOI: https://doi.org/10.1134/S1063782618090087
- ID: 204000
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详细
The results of studies of the optical properties of ensembles of colloidal CdS quantum dots passivated by thioglycolic acid are reported. The average dimensions of the quantum dots lie in the range from 1.7 to 5.8 nm. By X-ray diffraction studies and Raman spectroscopy, it is established that quantum dots crystallize with the formation of a cubic crystal lattice. The systematic features of the quantum-confinement effect in the optical absorption and luminescence spectra, as well as in the luminescence excitation spectra, are established. The features manifest themselves as a blue shift of the corresponding bands with decreasing quantum-dot dimensions. From analysis of the nanosecond luminescence kinetics, it is concluded that experimentally observed radiative recombination proceeds by the donor–acceptor mechanism.
作者简介
T. Kondratenko
Voronezh State University
Email: smirnov_m_s@mail.ru
俄罗斯联邦, Voronezh, 394018
M. Smirnov
Voronezh State University
编辑信件的主要联系方式.
Email: smirnov_m_s@mail.ru
俄罗斯联邦, Voronezh, 394018
O. Ovchinnikov
Voronezh State University
Email: smirnov_m_s@mail.ru
俄罗斯联邦, Voronezh, 394018
E. Shabunya-Klyachkovskaya
Stepanov Institute of Physics, National Academy of Sciences of Belarus
Email: smirnov_m_s@mail.ru
白俄罗斯, Minsk, 220072
A. Matsukovich
Stepanov Institute of Physics, National Academy of Sciences of Belarus
Email: smirnov_m_s@mail.ru
白俄罗斯, Minsk, 220072
A. Zvyagin
Voronezh State University
Email: smirnov_m_s@mail.ru
俄罗斯联邦, Voronezh, 394018
Y. Vinokur
Voronezh State University
Email: smirnov_m_s@mail.ru
俄罗斯联邦, Voronezh, 394018