Constructing density functional tight-binding parameters for electronic structure modeling of lead-bromide perovskites, perovskitoids, and related structures

J Junke Jiang (Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,) T Tammo van der Heide (Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,) S Simon Thébaud (Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,) C Carlos Raúl Lien-Medrano (Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,) A Arnaud Fihey (Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)−UMR 6226) L Laurent Pedesseau (Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,) C Claudio Quarti (Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons 4 , Place du Parc 20, Mons 7000,) M Marios Zacharias (Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,) G George Volonakis (Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR - UMR 6226) M Mikaël Kepenekian (ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Univ Rennes, UMR 6226, Rennes F-35000, France) B Bálint Aradi (Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,) M Michael A. Sentef J Jacky Even (ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Univ Rennes, UMR 6226, Rennes F-35000, France) C Claudine Katan (Univ Rennes)

Abstract

Density functional tight-binding (DFTB), a semi-empirical approach rooted in density functional theory, is well-suited for simulating large periodic systems. Following Jiang et al. [Phys. Rev. Mater. 9, 023803 (2025)], we have specifically tailored DFTB parameters for accurate electronic bandgap calculations in both three-dimensional and two-dimensional lead bromide perovskites, significantly reducing computational costs compared to conventional ab initio methods. Our electronic DFTB parameters provide reliable predictions for key electronic properties, such as bandgaps and effective masses, closely matching existing experimental data and advanced many body perturbation theory calculations. Furthermore, our approach successfully captures the bandgap trends observed in mixed-halide perovskites, reflecting the variation with halide composition. In addition, we explore the transferability of the newly optimized DFTB parameters to predict the electronic properties of a variety of low-dimensional perovskites and related structures with edge- or face-sharing octahedra.

Article Details

Volume / Issue Vol. 165, Issue 2
Published July 14, 2026
ISSN 0021-9606
Publisher American Institute of Physics

Journal Info

The Journal of Chemical Physics

American Institute of Physics

ISSN: 0021-9606 Physical Sciences

Authors (14)

J

Junke Jiang

Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,

T

Tammo van der Heide

Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,

S

Simon Thébaud

Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,

C

Carlos Raúl Lien-Medrano

Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,

A

Arnaud Fihey

Univ Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes)−UMR 6226

L

Laurent Pedesseau

Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,

C

Claudio Quarti

Laboratory for Chemistry of Novel Materials, Materials Research Institute, University of Mons 4 , Place du Parc 20, Mons 7000,

M

Marios Zacharias

Univ Rennes, INSA Rennes, CNRS, Institut FOTON–UMR 6082 1 , F-35000 Rennes,

G

George Volonakis

Univ Rennes, ENSCR, INSA Rennes, CNRS, ISCR - UMR 6226

M

Mikaël Kepenekian

ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Univ Rennes, UMR 6226, Rennes F-35000, France

B

Bálint Aradi

Institute for Theoretical Physics and Bremen Center for Computational Materials Science, University of Bremen 2 , 28359 Bremen,

M

Michael A. Sentef

J

Jacky Even

ENSCR, INSA Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes), Univ Rennes, UMR 6226, Rennes F-35000, France

C

Claudine Katan

Univ Rennes