Strain-dependent structural, electronic, mechanical, optical and thermoelectric properties of Sr3NBr3 perovskites for solar cell applications

Halide perovskites are a class of materials with excellent potential for solar cell applications due to their excellent optical and electronic properties. In this study, strain-dependent physical properties of Sr3NBr3 perovskites are investigated and theoretical results are reported here. The struct...

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Published in:Physical chemistry chemical physics : PCCP 2025-01, Vol.27 (6), p.3160-3170
Main Authors: Amina, Akhter, Naseem, Salhah Hamed Alrefaee, Nurmuhammedov, Anvar, Soliyeva, Mukhlisa, Pervaiz Ahmad, Tirth, Vineet, Algahtani, Ali, Mohsen, Q, Alsaqer, O, Hadia, N M A, Zaman, Abid
Format: Article
Language:English
Subjects:
Compressive properties
Dispersion curve analysis
Dynamic stability
Elastic anisotropy
Elastic properties
Free energy
Heat of formation
Optical properties
Perovskites
Photovoltaic cells
Physical properties
Power factor
Solar cells
Strain analysis
Tensile strain
Thermoelectric materials
Ultraviolet reflection
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Summary:Halide perovskites are a class of materials with excellent potential for solar cell applications due to their excellent optical and electronic properties. In this study, strain-dependent physical properties of Sr3NBr3 perovskites are investigated and theoretical results are reported here. The structural properties indicate that Sr3NBr3 has a cubic structure. Calculation of the formation energy confirms the thermodynamic stability of Sr3NBr3 in the pristine state and under compressive and tensile strain. Phonon dispersion curves confirm the dynamic stability of Sr3NBr3, while its mechanical stability is verified through elastic constant calculations. The material exhibits anisotropy, which diminishes under tensile strain. Additionally, the band structure and density of states are analyzed to investigate the strain-induced changes in its electronic properties. The results show that pristine and strained Sr3NBr3 systems have semiconducting nature. The Sr3NBr3 material shows excellent optical absorption in the visible range. In the energy range of 10 eV to 13 eV (ultraviolet region), an excellent reflection of up to 70% is observed for Sr3NBr3. Besides, we studied different thermoelectric features to explore the thermoelectric properties of Sr3NBr3. A high power factor of 4.46 × 1011 W m−1 K−2 s−1 is found for the hole-doped system.
ISSN:1463-9076
1463-9084
1463-9084
DOI:10.1039/d4cp04895d