Abstract
This study reports for the first time the theoretical prediction of structural, electronic, elastic and optical properties of cubic BaLiCl3, BaLiBr3, and BaLiI3 perovskites. The corresponding properties of the well-known BaLiF3 are also theoretically investigated. Density Functional Theory (DFT) using the Generalized Gradient Approximation (GGA) was implemented within the Quantum Espresso package to investigate the properties of the perovskites. The results revealed that BaLiX3 (X = F, Cl, Br, and I) are in ionic crystal forms with optimized lattice parameters of 4.04, 4.90, 5.21, and 5.66 Å, respectively. The minor band gaps were found to be 6.62 eV (Γ→Γ), 4.29 eV (R→Γ), 3.50 eV (R→Γ), and 2.58 eV (R→Γ) for the respective compounds. The investigation of their elastic properties indicated that these perovskites are all mechanically stable, while only BaLiBr3 and BaLiI3 are malleable. Finally, the studied perovskites exhibit excellent optical properties, including low reflectivity and high absorption in the ultraviolet region. Hence, it is predicted that these perovskites are suitable for various optoelectronic applications involving absorption in the UV region. However, BaLiBr3 and BaLiI3 are more favorable than BaLiF3 and BaLiCl3 to be deposited as thin films due to their flexibility.
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Investigation of heavy thallium perovskites TlGeX (X = Cl, Br and I) for optoelectronic and thermoelectric applications: A DFT study;Materials Today Communications;2023-12
2. First-principles calculations to investigate optoelectronic, thermoelectric and elastic properties of novel lead-free halide perovskites CsRbPtX6 (X = Cl, Br and I) compounds for solar cells applications;Physica B: Condensed Matter;2023-11
3. Lead-free Perovskites TlGeClxBr3-x (x=0,1,2,3) as Promising Materials for Solar Cell Application: a DFT Study;Journal of Physics: Conference Series;2023-11-01
4. First-principles calculations to investigate lead-free double perovskites CsInSbAgX6 (X = Cl, Br and I) for optoelectronic and thermoelectric applications;Computational and Theoretical Chemistry;2023-09
5. Lead-free perovskites InSnX3(X = Cl, Br, I) for solar cell applications: a DFT study on the mechanical, optoelectronic, and thermoelectric properties;Materials Research Express;2023-09-01