Interfacial effect on the optoelectronic and piezoelectric properties of Ge-Sn terminated Halide Perovskite heterostructure from first-principles study

Fuente: arXiv
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Autores principales: Celestine, L., Zosiamliana, R., Laltlanmawii, H., Chettri, B., Hima, Lalhum, Zuala, Lalhriat, Gurung, S., Laref, A., Rai, D. P.
Formato: Preprint
Publicado: 2025
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author Celestine, L.
Zosiamliana, R.
Laltlanmawii, H.
Chettri, B.
Hima, Lalhum
Zuala, Lalhriat
Gurung, S.
Laref, A.
Rai, D. P.
author_facet Celestine, L.
Zosiamliana, R.
Laltlanmawii, H.
Chettri, B.
Hima, Lalhum
Zuala, Lalhriat
Gurung, S.
Laref, A.
Rai, D. P.
contents Since the very early stages of research on sustainable technologies, green energy conversion has always been a prime focus. With the discoveries of countless functional materials in recent years, significant progress has been made to meet the global energy demand for sustainable development. Among them, halide perovskites have emerged as one of the most promising and reliable materials. In this work, we have investigated the lead-free halide perovskites, vis CsGeCl3 and RbSnBr3, within a framework of density functional theory (DFT) to explore their potential applicability in harvesting clean and renewable energy. This study gives a comprehensive analysis of the bulk, surface (001), and Ge-Sn-terminated interfaces within GGA and mGGA functionals. Interestingly, the inherent asymmetric arrangements of the systems exhibit remarkable optoelectronic and piezoelectric properties. The piezoelectric performance of each surface cut has been validated through the electromechanical coupling calculation.
format Preprint
id arxiv_https___arxiv_org_abs_2512_10471
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Interfacial effect on the optoelectronic and piezoelectric properties of Ge-Sn terminated Halide Perovskite heterostructure from first-principles study
Celestine, L.
Zosiamliana, R.
Laltlanmawii, H.
Chettri, B.
Hima, Lalhum
Zuala, Lalhriat
Gurung, S.
Laref, A.
Rai, D. P.
Materials Science
Since the very early stages of research on sustainable technologies, green energy conversion has always been a prime focus. With the discoveries of countless functional materials in recent years, significant progress has been made to meet the global energy demand for sustainable development. Among them, halide perovskites have emerged as one of the most promising and reliable materials. In this work, we have investigated the lead-free halide perovskites, vis CsGeCl3 and RbSnBr3, within a framework of density functional theory (DFT) to explore their potential applicability in harvesting clean and renewable energy. This study gives a comprehensive analysis of the bulk, surface (001), and Ge-Sn-terminated interfaces within GGA and mGGA functionals. Interestingly, the inherent asymmetric arrangements of the systems exhibit remarkable optoelectronic and piezoelectric properties. The piezoelectric performance of each surface cut has been validated through the electromechanical coupling calculation.
title Interfacial effect on the optoelectronic and piezoelectric properties of Ge-Sn terminated Halide Perovskite heterostructure from first-principles study
topic Materials Science
url https://arxiv.org/abs/2512.10471