Investigation of the behaviour of tunable chalcogenide-Bismuth based perovskite BiTl (SxSe1-x)3(X = 0, 0.33, 0.67, 1): first principles calculations
Keywords:
Chalcogenide based perovskite, Electro-optical properties, Optoelectronics, Thermal sensor, PhotovoltaicAbstract
Density functional theory (DFT) driven by the quantum ESPRESSO code was used in this study to investigate the structural, opto-electronic, and thermoelectric properties of ternary perovskite chalcogenide compound. This is to examine their possible use in optoelectronics and reducing the dependency on silicon and fossil fuel. The Perovskite compounds crystalize in the cubic phase with a space group Pm-3m. The volume versus energy is fitted by the Birch-Murnaghan equation of state which yielded the equilibrium lattice constant of 8.353, 8.488, 8.629 and 8.806, bulk modulus of 255.8, 242.7, 233.5 and 222.4, for BiTlS3 , BiTlS2 Se1 , BiTlS1 Se2 and BiTlSe3 . Indirect band gaps of 2.6 eV, 2.7 eV, 2.9 eV, and 3.2 eV were obtained for BiTlS3 , BiTlS2 Se1 , BiTlS1 Se2 and BiTlSe3 compounds, respectively. Also, increment in the energy from 0 eV to 10 eV resulted in optical properties fluctuation within 0 cm-1 to 1.5 × 109 cm-1 for absorption coefficient in the compounds. However, a variation from 10 eV to 20 eV moved the absorption coefficient to 4.2 × 109 cm-1 for all the compounds from visible to the UV range. Furthermore, the observed properties show that the value of figure of merit obtained is 0.125 for BiTlS3 , 0.100 for BiTlS2 Se1 , 0.068 for BiTlS1 Se2 and 0.055 for BiTlSe3 at 300 K. By adjusting the chalcogen ratio, BiTlX3 (X = S, Se) possess the tunable band gap in the whole visible light range, which is of great significance for the development of new-type, high-efficient semiconductor material and optoelectronic devices, while the low thermoelectric values predict the compounds use as sensors. The proposed results may pave the way for further investigations into the use of the perovskite compounds for optoelectronic devices.
Published
How to Cite
Issue
Section
Copyright (c) 2024 Muteeu A. Olopade, Anthony B. Adegboyega, Kayode I. Ogungbemi, Adeyinka D. Adewoyin

This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Similar Articles
- Timothy Kayode Samson, Francis Olatunbosun Aweda, Wind speed prediction in some major cities in Africa using Linear Regression and Random Forest algorithms , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 4, November 2024
- Kenneth Christopher Ugwoke, Nnanna Nwojo Agwu, Saleh Abdullahi, Artificial potential field path length reduction using Kenneth-Nnanna-Saleh algorithm , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- Emmanuel Adeyefa, O. S. Esan, Exponentially Fitted Chebyshev Based Algorithm as Second Order Initial Value Solver , Journal of the Nigerian Society of Physical Sciences: Volume 2, Issue 1, February 2020
- E. Udensi, R. B. Salau, S. O. Salihu, M. M. Ndamitso, M. T. Bisiriyu, Chemometric authentication of branded and crude spices using integrated GC–MS fingerprints and elemental profiling , Journal of the Nigerian Society of Physical Sciences: Volume 8, Issue 3, August 2026
- Omodele Olubi, Ebeneze Oniya, Taoreed Owolabi, Development of Predictive Model for Radon-222 Estimation in the Atmosphere using Stepwise Regression and Grid Search Based-Random Forest Regression , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 2, May 2021
- Terver Daniel, F. Eriba-Idoko, J. O. Tsor, S. T. Kungur, E. O. Enokela, F. Gbaorun, E. C. Hemba, A. A. McAsule, N. S. Akiiga, P. O. Ushie, Effects of Repeated Frying on Physical Properties of Cooking Oil obtained from Local Markets in Makurdi Metropolis, Benue State, Nigeria. , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 4, November 2021
- Enobong R. Essien, Violette N. Atasie, Ngozi A. Adeleye, Luqman A. Adams, Synthesis and in vitro bioactivity of sodium metasilicate-derived silicon-substituted hydroxyapatite , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 3, August 2024
- Kazeem A. Tijani, Chinwendu. E. Madubueze, Isaac O. Onwubuya, Nkiruka Maria-Assumpta Akabuike, John Olajide Akanni, Mathematical modelling of the dynamical system of military population, focusing on the impact of welfare , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- I. E. Otuokere, J. G. Ohwimu, K. C. Amadi, C. O. Alisa, F. C. Nwadire, O. U. Igwe, A. A. Okoyeagu, C. M. Ngwu, Synthesis, Characterization and Molecular Docking Studies of Mn (II) Complex of Sulfathiazole , Journal of the Nigerian Society of Physical Sciences: Volume 1, Issue 3, August 2019
- C. O. Lawani , G. J. Ibeha, Olumide Ige, D. Eli, J. O. Emmanuel, A. J. Ukwenya, P. O. Oyedare, Numerical Simulation of Copper Indium Gallium Diselenide Solar Cells Using One Dimensional SCAPS Software , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 2, May 2021
You may also start an advanced similarity search for this article.

