Nonlinear optical response of planar and spherical CdSe nanocrystals
- Authors: Selyukov A.S.1, Isaev A.A.1, Vitukhnovsky A.G.1,2,3, Litvak V.L.2, Katsaba A.V.1,4, Korshunov V.M.4, Vasiliev R.B.5
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Affiliations:
- Lebedev Physical Institute
- Moscow Institute of Physics and Technology (State University)
- National Research Nuclear University MEPhI
- Bauman Moscow State Technical University
- Moscow State University
- Issue: Vol 50, No 7 (2016)
- Pages: 947-950
- Section: Microcrystalline, Nanocrystalline, Porous, and Composite Semiconductors
- URL: https://journals.rcsi.science/1063-7826/article/view/197479
- DOI: https://doi.org/10.1134/S1063782616070228
- ID: 197479
Cite item
Abstract
The nonlinear optical response of a colloidal solution of planar CdSe semiconductor nanocrystals (nanoplatelets) is studied for the first time. The nonlinear optical response of these nanoparticles is compared to that of spherical CdSe nanocrystals (quantum dots). The photoinduced nonlinearity is attributed to the optical generation of long-lived charge carriers in the nanoobjects under study. It is shown that, upon the exposure of a cell with the solution of nanoparticles to focused continuous-wave (cw) laser radiation with a wavelength of 473 nm, the nonlinear optical responses of CdSe nanoplatelets and quantum dots are somewhat different at identical optical densities at the above-indicated wavelength. The differences are supposedly associated with a higher diffusion rate of spherical nanoparticles in the solution because of their smaller size compared to that of nanoplatelets.
About the authors
A. S. Selyukov
Lebedev Physical Institute
Author for correspondence.
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 119991
A. A. Isaev
Lebedev Physical Institute
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 119991
A. G. Vitukhnovsky
Lebedev Physical Institute; Moscow Institute of Physics and Technology (State University); National Research Nuclear University MEPhI
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 119991; Dolgoprudnyi, Moscow region, 141700; Moscow, 115409
V. L. Litvak
Moscow Institute of Physics and Technology (State University)
Email: bachelor89@inbox.ru
Russian Federation, Dolgoprudnyi, Moscow region, 141700
A. V. Katsaba
Lebedev Physical Institute; Bauman Moscow State Technical University
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 119991; Moscow, 105005
V. M. Korshunov
Bauman Moscow State Technical University
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 105005
R. B. Vasiliev
Moscow State University
Email: bachelor89@inbox.ru
Russian Federation, Moscow, 119992