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
- Kanak Saini, Monika Saini, Ashish Kumar, Dinesh Kumar Saini, Availability predictions of solar power plants using multiple regression and neural networks: an analytical study , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 2, May 2025
- Ekemini Ituen, Peace Madu, Adewale Olamoyesan, Gospel Asuquo, Chibueze J. Olelewe, Emmanuel E. Etim, Adsorption of dithiazolidine compounds on Fe(110) surface and potential for corrosion inhibition: DFT calculations and adsorption locator/Monte Carlo adsorption simulations , Journal of the Nigerian Society of Physical Sciences: Volume 8, Issue 3, August 2026
- Selvaraju Sivamani, Marwan Ahmed Sulieman Al Aamri, Aseela Musalem Awad Anthroon Jaboob, Azeezah Mohammed Masoud Kashoob, Layal Kamall Abdullah Al-Hakeem, Mouna Salim Mhaad Said Almashany, Muna Ahmed Mohammed Safrar, Heterogeneous Catalyzed Synthesis of Biodiesel from Crude Sunflower Oil , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 1, February 2022
- Kashif Hussain, Oluwaseun Adeyeye, Nazihah Ahmad, Numerical Solution of Second Order Fuzzy Ordinary Differential Equations using Two-Step Block Method with Third and Fourth Derivatives , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 2, May 2023
- Odilon Joseph TOWANOU, Hagninou Elagnon Venance Donnou, Gabin Koto N’Gobi, Augustin Enonsi Leode, Basile Kounouh´ewa, Solar Energy Storage by Fuel Cell Technology at Abomey-Calavi (Benin) , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 2, May 2023
- Olalekan Taofeek Wahab, Salaudeen Alaro Musa, AbdulAzeez Kayode Jimoh, Kazeem Adesina Dauda, Constructive approach and randomization of a two-parameter chaos system for securing data , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 2, May 2024
- D. C. Iweobodo, G. C. Abanum, O. Ogoegbulem , N. I. Ochonogor, I. N. Njoseh, Discretization of the Caputo time-fractional advection-diffusion problems with certain wavelet basis function , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- A. E. Ibor, D. O. Egete, A. O. Otiko, D. U. Ashishie, Detecting network intrusions in cyber-physical systems using deep autoencoder-based dimensionality reduction approach anddeep neural networks , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- A. K. Usman, Y. A. Hassan, A. A. Bery, A. S. Akingboye, M. D. Dick, B. M. Ahmed, R. O. Aderoju, Hybrid deep belief network and fuzzy clustering approach for geothermal prospectivity mapping in northeastern Nigeria using magnetic and landsat data , Journal of the Nigerian Society of Physical Sciences: Volume 8, Issue 1, February 2026
- Ibukun Akinsola, Alabi Aderemi Babatunde, Adedayo Kayode Seun, Nicola Coppede, Characterizations of Galena as Potential Photosensitizer in a Natural Dye-Sensitized Solar Cell , 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.

