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.
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Electronic screening in second order optical polarizabilities of elongated Donor/Acceptor polyenes
TL;DR: In this article, a family of donor/acceptor substituted polyenes are calculated using collective electronic normal modes obtained by solving equations of motion for the single-electron density matrix combined with the INDO/S semi-empirical hamiltonian.
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Tunable Charge Transfer Dynamics at Tetracene/LiF/C60 Interfaces
Siddharth Sampat,Aditya D. Mohite,B. K. Crone,Sergei Tretiak,Anton V. Malko,Antoinette J. Taylor,Dmitry Yarotski +6 more
TL;DR: In this article, a LiF barrier layer was used to investigate charge transfer dynamics across organic semiconductor tetracene/C60 interfaces in the presence of a Li-F barrier, and photo-induced absorption spectra in the 1.6−2.3 eV range revealed a strong effect of the intermediate Li-f barrier layer on dynamics of charge transfer excitons (CTE) creation and recombination.
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Hidden Fine Structure of Quantum Defects Revealed by Single Carbon Nanotube Magneto-Photoluminescence.
Younghee Kim,Serguei Goupalov,Serguei Goupalov,Braden M. Weight,Brendan J. Gifford,Xiaowei He,Avishek Saha,Mijin Kim,Geyou Ao,YuHuang Wang,Ming Zheng,Sergei Tretiak,Stephen K. Doorn,Han Htoon +13 more
TL;DR: In this article, organic color-center quantum defects in semiconducting carbon nanotube hosts are rapidly emerging as promising candidates for solid-state quantum information technologies, but it is unclear how to exploit them.
Geometry Distortion and Small Polaron Binding Energy Changes with Ionic Substitution in Halide Perovskites
TL;DR: In this paper, the results from an in-depth computational study of small polaron formation, electronic structure, charge density, and reorganization energies using isolated structures are reported. But the results are limited to the case of hybrid halide perovskites.
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Vibronic Quantum Beating between Electronic Excited States in a Heterodimer.
Victor M. Freixas,Sergei Tretiak,Dmitry V. Makhov,Dmitry V. Makhov,Dmitrii V. Shalashilin,Sebastian Fernandez-Alberti +5 more
TL;DR: Non-adiabatic excited state molecular dynamics simulations have been performed on a rigid synthetic heterodimer that has been proposed as a simplified model for investigating the role and mechanism of coherent energy transfer in multichromophoric systems.