S
Sergei Tretiak
Researcher at Los Alamos National Laboratory
Publications - 475
Citations - 28719
Sergei Tretiak is an academic researcher from Los Alamos National Laboratory. The author has contributed to research in topics: Excited state & Density functional theory. The author has an hindex of 73, co-authored 415 publications receiving 23905 citations. Previous affiliations of Sergei Tretiak include European University of Brittany & University of Central Florida.
Papers
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Quantum chemistry of the minimal CdSe clusters.
TL;DR: The results suggest that B3LYP/LANL2DZ level of theory is appropriate for the system modeling, whereas frequently used semiempirical methods produce unphysical results.
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The Effects of Electronic Impurities and Electron–Hole Recombination Dynamics on Large‐Grain Organic–Inorganic Perovskite Photovoltaic Efficiencies
Jean-Christophe Blancon,Wanyie Nie,Amanda Neukirch,Gautam Gupta,Sergei Tretiak,Laurent Cognet,Laurent Cognet,Aditya D. Mohite,Jared Crochet +8 more
TL;DR: In this article, the authors investigated the dynamics of photogenerated charge carriers in large-area grain organometallic perovskite thin films via confocal time-resolved photoluminescence spectroscopy.
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Ideal dipole approximation fails to predict electronic coupling and energy transfer between semiconducting single-wall carbon nanotubes
TL;DR: It is concluded that the point dipole approximation is inappropriate for use with elongated systems such as carbon nanotubes and that methods which can account for the shape of the particle are more suitable.
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DFT Study of Ligand Binding to Small Gold Clusters
TL;DR: In this article, the effect of ligand bonding on the structure of small gold clusters has been investigated using density functional theory (DFT) functionals and five different basis sets for calculations of ligated gold cluster systems.
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Fluorescent Carbon Nanotube Defects Manifest Substantial Vibrational Reorganization
Mijin Kim,Lyudmyla Adamska,Nicolai F. Hartmann,Hyejin Kwon,Jin Liu,Kirill A. Velizhanin,Yanmei Piao,Lyndsey R. Powell,Brendan Meany,Stephen K. Doorn,Sergei Tretiak,YuHuang Wang +11 more
TL;DR: In this article, a series of fluorescent aryl defects were synthetically incorporated into semiconducting single-walled carbon nanotubes and experimentally determined their energy levels by temperature-dependent and chemically correlated evolution of exciton population and photoluminescence.