Document Type : Research Paper
Authors
Physics and Accelerators Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box:11365-8486, Tehran-Iran
Abstract
CsSnBr3 nanocrystals are better than other lead-free perovskites because of their ease and low-cost synthesis, long-term function, and good stability. It is a suitable selection for use in tandem photodetectors. In this study, using the density functional theory, in the first stage, the elastic and electronic properties were calculated. Next, using the calculated quantities, the product of mobility-lifetime (µτ) of the charge carriers of CsSnBr3 was calculated. According to the results obtained, both of the electron and the hole have the lifetime-mobility product of an order 10-3 (V / cm2). The main reason for this can be attributed to the small effective mass of the charge carriers. However, this product has been reported for commercial detectors such as CdTe and CZT for electrons was of an order 10-3-10-2 and for holes in of an order 10-4-10-5. Therefore, due to the same of the product µτ in the CsSnBr3 crystal, the final pulse will be the sum of both charge carriers. As a result, the CsSnBr3 structure can show better potential for use in X-ray and gamma detectors.
Highlights
- F.S. Galasso, Structure, Properties and Preparation of Perovskite-Type Compounds, (Pergamon, New York, (1969).
- R.J.D. Tilley, Perovskites structure-property relationships, (John Wiley & Sons, 2016).
- Y.T. Feng, R. Zheng, Recent advances in radiation detection technologies enabled by metal-halide perovskites, Materials Advances (2021).
- L. Binghan, et al, All‐Inorganic Perovskite CsSnBr3 as a Thermally Stable, Free‐Carrier Semiconductor, Angew. Chem. Int. Ed, 57 (40), 13154 (2018).
- P.W.O. Nyawere, N.W. Makau, G.O. Amolo, First-principles calculations of the elastic constants of the cubic, orthorhombic and hexagonal phases of BaF2, Physica B: Condens. Matter, 434, 122 (2014).
- https://dalcorso.github.io/thermo_pw.
- M.I. Kholil, et al, Influence of molybdenum and technetium doping on visible light absorption, optical and electronic properties of lead-free perovskite CsSnBr3 for optoelectronic applications, RSC Adv, 11(4), 2405 (2021).
- J. Bardeen, W. Shockley, Deformation potentials and mobilities in non-polar crystal, s, Phys. Rev., 80(1), 72 (1950).
- E. Kaxiras, Atomic and electronic structure of solids, (Cambridge University Press, Cambridge, 2003).
- X. Guangbiao, et al, Structural and Optoelectronic Properties of Two-Dimensional Ruddlesden – Popper Hybrid Perovskite CsSnBr3, Nanomaterials, 11(8), 2119 (2021).
- L.Y. Huang, W.R. Lambrecht, Electronic band structure, phonons, and exciton binding energies of halide perovskites CsSnCl 3, CsSnBr 3, and CsSnI 3, Phys. Rev, B 88(16), 165203 (2013).
- D.S. Sordo, et al, Progress in the development of CdTe and CdZnTe semiconductor radiation detectors for astrophysical and medical applications, Sensors, 9(5), 3491-3526 (2009).
- T.E. Schlesinger, et al, Cadmium zinc telluride and its use as a nuclear radiation detector material, Materials Science and Engineering: R: Reports, 32(4-5), 103-189 (2001).
- S. Gupta, et al, CsSnBr3, a lead-free halide perovskite for long-term solar cell application: insights on SnF2 addition, ACS Energy Letters, 1(5), 1028-1033 (2016).
Keywords
Main Subjects
- F.S. Galasso, Structure, Properties and Preparation of Perovskite-Type Compounds, (Pergamon, New York, (1969).
- R.J.D. Tilley, Perovskites structure-property relationships, (John Wiley & Sons, 2016).
- Y.T. Feng, R. Zheng, Recent advances in radiation detection technologies enabled by metal-halide perovskites, Materials Advances (2021).
- L. Binghan, et al, All‐Inorganic Perovskite CsSnBr3 as a Thermally Stable, Free‐Carrier Semiconductor, Angew. Chem. Int. Ed, 57 (40), 13154 (2018).
- P.W.O. Nyawere, N.W. Makau, G.O. Amolo, First-principles calculations of the elastic constants of the cubic, orthorhombic and hexagonal phases of BaF2, Physica B: Condens. Matter, 434, 122 (2014).
- https://dalcorso.github.io/thermo_pw.
- M.I. Kholil, et al, Influence of molybdenum and technetium doping on visible light absorption, optical and electronic properties of lead-free perovskite CsSnBr3 for optoelectronic applications, RSC Adv, 11(4), 2405 (2021).
- J. Bardeen, W. Shockley, Deformation potentials and mobilities in non-polar crystal, s, Phys. Rev., 80(1), 72 (1950).
- E. Kaxiras, Atomic and electronic structure of solids, (Cambridge University Press, Cambridge, 2003).
- X. Guangbiao, et al, Structural and Optoelectronic Properties of Two-Dimensional Ruddlesden – Popper Hybrid Perovskite CsSnBr3, Nanomaterials, 11(8), 2119 (2021).
- L.Y. Huang, W.R. Lambrecht, Electronic band structure, phonons, and exciton binding energies of halide perovskites CsSnCl 3, CsSnBr 3, and CsSnI 3, Phys. Rev, B 88(16), 165203 (2013).
- D.S. Sordo, et al, Progress in the development of CdTe and CdZnTe semiconductor radiation detectors for astrophysical and medical applications, Sensors, 9(5), 3491-3526 (2009).
- T.E. Schlesinger, et al, Cadmium zinc telluride and its use as a nuclear radiation detector material, Materials Science and Engineering: R: Reports, 32(4-5), 103-189 (2001).
- S. Gupta, et al, CsSnBr3, a lead-free halide perovskite for long-term solar cell application: insights on SnF2 addition, ACS Energy Letters, 1(5), 1028-1033 (2016).
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