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Theoretical Study on the Carrier Mobility and Optical Properties of CsPbI(3) by DFT
[Image: see text] The advantages of organic–inorganic hybrid halide perovskites and related materials, such as high absorption coefficient, appropriate band gap, excellent carrier mobility, and long carrier life, provide the possibility for the preparation of low-cost and high-efficiency solar cell...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153995/ https://www.ncbi.nlm.nih.gov/pubmed/34056310 http://dx.doi.org/10.1021/acsomega.1c00734 |
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author | Gao, Li-Ke Tang, Yan-Lin |
author_facet | Gao, Li-Ke Tang, Yan-Lin |
author_sort | Gao, Li-Ke |
collection | PubMed |
description | [Image: see text] The advantages of organic–inorganic hybrid halide perovskites and related materials, such as high absorption coefficient, appropriate band gap, excellent carrier mobility, and long carrier life, provide the possibility for the preparation of low-cost and high-efficiency solar cell materials. Among the inorganic materials, CsPbI(3) is paid more attention to by researchers as CsPbI(3) has incomparable advantages. In this paper, based on density functional theory (DFT), we first analyze the crystal structure, electronic properties, and work function of two common bulk structures of CsPbI(3) and their slices, and then, we study the carrier mobility, exciton binding energy, and light absorption coefficient. Considering that CsPbI(3) contains heavy elements, the spin–orbit coupling (SOC) effect was also considered in the calculation. The highest mobility is that electrons of the cubic structure reach 1399 cm(2) V(–1) S(–1) after considering the SOC effect, which is equal to that of traditional solar cells (such as Si-based, PbSe, and PbTe). The lowest exciton binding energy is 101 meV in the cubic bulk structure, which is beneficial to the separation of photogenerated carriers. In the visible region, the absorption coefficient of the cubic structure is the best among all structures, reaching 10(5) cm(–1). Through the study of mobility, exciton binding energy, and light absorption coefficient, it is found that the cubic bulk structure in all structures of CsPbI(3) has the best photoelectric performance. This paper can provide some guidance for the experimental preparation of CsPbI(3) as a potential high-efficiency solar cell material. |
format | Online Article Text |
id | pubmed-8153995 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-81539952021-05-27 Theoretical Study on the Carrier Mobility and Optical Properties of CsPbI(3) by DFT Gao, Li-Ke Tang, Yan-Lin ACS Omega [Image: see text] The advantages of organic–inorganic hybrid halide perovskites and related materials, such as high absorption coefficient, appropriate band gap, excellent carrier mobility, and long carrier life, provide the possibility for the preparation of low-cost and high-efficiency solar cell materials. Among the inorganic materials, CsPbI(3) is paid more attention to by researchers as CsPbI(3) has incomparable advantages. In this paper, based on density functional theory (DFT), we first analyze the crystal structure, electronic properties, and work function of two common bulk structures of CsPbI(3) and their slices, and then, we study the carrier mobility, exciton binding energy, and light absorption coefficient. Considering that CsPbI(3) contains heavy elements, the spin–orbit coupling (SOC) effect was also considered in the calculation. The highest mobility is that electrons of the cubic structure reach 1399 cm(2) V(–1) S(–1) after considering the SOC effect, which is equal to that of traditional solar cells (such as Si-based, PbSe, and PbTe). The lowest exciton binding energy is 101 meV in the cubic bulk structure, which is beneficial to the separation of photogenerated carriers. In the visible region, the absorption coefficient of the cubic structure is the best among all structures, reaching 10(5) cm(–1). Through the study of mobility, exciton binding energy, and light absorption coefficient, it is found that the cubic bulk structure in all structures of CsPbI(3) has the best photoelectric performance. This paper can provide some guidance for the experimental preparation of CsPbI(3) as a potential high-efficiency solar cell material. American Chemical Society 2021-04-19 /pmc/articles/PMC8153995/ /pubmed/34056310 http://dx.doi.org/10.1021/acsomega.1c00734 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Gao, Li-Ke Tang, Yan-Lin Theoretical Study on the Carrier Mobility and Optical Properties of CsPbI(3) by DFT |
title | Theoretical Study on the Carrier Mobility and Optical
Properties of CsPbI(3) by DFT |
title_full | Theoretical Study on the Carrier Mobility and Optical
Properties of CsPbI(3) by DFT |
title_fullStr | Theoretical Study on the Carrier Mobility and Optical
Properties of CsPbI(3) by DFT |
title_full_unstemmed | Theoretical Study on the Carrier Mobility and Optical
Properties of CsPbI(3) by DFT |
title_short | Theoretical Study on the Carrier Mobility and Optical
Properties of CsPbI(3) by DFT |
title_sort | theoretical study on the carrier mobility and optical
properties of cspbi(3) by dft |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8153995/ https://www.ncbi.nlm.nih.gov/pubmed/34056310 http://dx.doi.org/10.1021/acsomega.1c00734 |
work_keys_str_mv | AT gaolike theoreticalstudyonthecarriermobilityandopticalpropertiesofcspbi3bydft AT tangyanlin theoreticalstudyonthecarriermobilityandopticalpropertiesofcspbi3bydft |