DFTB parameters for the periodic table: Part 1, electronic structure

M Wahiduzzaman, AF Oliveira… - Journal of chemical …, 2013 - ACS Publications
A parametrization scheme for the electronic part of the density-functional based tight-binding
(DFTB) method that covers the periodic table is presented. A semiautomatic parametrization …

Nonadiabatic molecular dynamics for thousand atom systems: a tight-binding approach toward PYXAID

S Pal, DJ Trivedi, AV Akimov, B Aradi… - Journal of chemical …, 2016 - ACS Publications
Excited state dynamics at the nanoscale requires treatment of systems involving hundreds
and thousands of atoms. In the majority of cases, depending on the process under …

Automatized parameterization of DFTB using particle swarm optimization

CP Chou, Y Nishimura, CC Fan, G Mazur… - Journal of chemical …, 2016 - ACS Publications
We present a novel density-functional tight-binding (DFTB) parametrization toolkit
developed to optimize the parameters of various DFTB models in a fully automatized …

Sub-picosecond Auger-mediated hole-trapping dynamics in colloidal CdSe/CdS core/shell nanoplatelets

S Dong, S Pal, J Lian, Y Chan, OV Prezhdo, ZH Loh - ACS nano, 2016 - ACS Publications
Quasi-two-dimensional colloidal nanoplatelets (NPLs) have recently emerged as a class of
semiconductor nanomaterials whose atomically precise monodisperse thicknesses give rise …

Effects of Mg doping on physical properties of zinc-blende mercury selenide HgSe compound

Y Selmani, H Labrim, R El Bouayadi… - Physica B: Condensed …, 2022 - Elsevier
Structural, electronic and optical properties of Hg 1-x Mg x Se (x= 0, 0.25, 0.5, 0.75 and 1)
alloys have been investigated by using density functional theory calculations (DFT) with the …

A first-principles study on the structural, elastic, electronic, optical, lattice dynamical, and thermodynamic properties of zinc-blende CdX (X= S, Se, and Te)

L Guo, S Zhang, W Feng, G Hu, W Li - Journal of alloys and compounds, 2013 - Elsevier
The structural stability, elastic, electronic, optical, vibrational, and thermodynamic properties
of the cubic compounds CdX (X= S/Se/Te) in zinc-blende structure have been investigated …

Photophysical Properties of CdSe/CdS core/shell quantum dots with tunable surface composition

KL Sowers, Z Hou, JJ Peterson, B Swartz, S Pal… - Chemical Physics, 2016 - Elsevier
We report the synthesis and optical characterization of core/shell CdSe/CdS quantum dots
(QDs) with controlled surface composition. Using secondary phosphine chalcogenide and …

Carbazole-decorated fluorescent CdS quantum dots: A potential light-harvesting material

T Mallick, A Karmakar, M Kar, S Dutta… - Journal of Physics and …, 2022 - Elsevier
An organic-inorganic nanohybrid system (AMC-CdS QD) comprised of a fluorescent
carbazole analog, AMC (3-amino-N-methyl carbazole), and CdS QDs has been synthesized …

Structural, magnetic, and optoelectronic properties of new ferromagnetic semiconductors Cd0.75Os0.25S and Cd0.75Ir0.25S: Insight from DFT computations

M Boudjelal, M Batouche, T Seddik, T Antri… - Optical and Quantum …, 2022 - Springer
This paper investigates in detail the structural, magnetic, and optoelectronic properties of
Cd0. 75TM0. 25S (TM= Os and Ir) alloys having a zinc-blende structure of the ferromagnetic …

Atomistic analysis of room temperature quantum coherence in two-dimensional CdSe nanostructures

S Pal, P Nijjar, T Frauenheim, OV Prezhdo - Nano Letters, 2017 - ACS Publications
Recent experiments on CdSe nanoplatelets synthesized with precisely controlled thickness
that eliminates ensemble disorder have allowed accurate measurement of quantum …