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Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications

In this investigation, we have demonstrated the synthesis of lead-free CsSnBr(3) (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB′B) nanocrystals, with a stable cubic perovskite structure following a facile hot injection technique. The Bi substitution in CSB was found to play a vital role in reducing th...

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Autores principales: Adib, Md. Asif, Sharmin, Fahmida, Basith, M. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628993/
https://www.ncbi.nlm.nih.gov/pubmed/37941959
http://dx.doi.org/10.1039/d3na00309d
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author Adib, Md. Asif
Sharmin, Fahmida
Basith, M. A.
author_facet Adib, Md. Asif
Sharmin, Fahmida
Basith, M. A.
author_sort Adib, Md. Asif
collection PubMed
description In this investigation, we have demonstrated the synthesis of lead-free CsSnBr(3) (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB′B) nanocrystals, with a stable cubic perovskite structure following a facile hot injection technique. The Bi substitution in CSB was found to play a vital role in reducing the size of the nanocrystals significantly, from 316 ± 93 to 87 ± 22 nm. Additionally, Bi doping has inhibited the oxidation of Sn(2+) of CSB perovskite. A reduction in the optical band gap from 1.89 to 1.73 eV was observed for CSB′B and the PL intensity was quenched due to the introduction of the Bi(3+) dopant. To demonstrate one of the visible-light-driven applications of the nanocrystals, photodegradation experiments were carried out as a test case. Interestingly, under UV-vis irradiation, the degradation efficiency of CSB′B was roughly one order lower than that of P25 titania nanoparticles; however, it was almost five times higher when driven by visible light under identical conditions. The water stability of CSB′B perovskite and suppression of the oxidative degradation of Sn were confirmed through XRD and XPS analyses after photocatalysis. Moreover, by employing experimental parameters, DFT-based first-principles calculations were performed, which demonstrated an excellent qualitative agreement between experimental and theoretical outcomes. The as-synthesized Bi-doped CSB might be a stable halide perovskite with potential in visible-light-driven applications.
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spelling pubmed-106289932023-11-08 Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications Adib, Md. Asif Sharmin, Fahmida Basith, M. A. Nanoscale Adv Chemistry In this investigation, we have demonstrated the synthesis of lead-free CsSnBr(3) (CSB) and 5 mol% bismuth (Bi) doped CSB (CSB′B) nanocrystals, with a stable cubic perovskite structure following a facile hot injection technique. The Bi substitution in CSB was found to play a vital role in reducing the size of the nanocrystals significantly, from 316 ± 93 to 87 ± 22 nm. Additionally, Bi doping has inhibited the oxidation of Sn(2+) of CSB perovskite. A reduction in the optical band gap from 1.89 to 1.73 eV was observed for CSB′B and the PL intensity was quenched due to the introduction of the Bi(3+) dopant. To demonstrate one of the visible-light-driven applications of the nanocrystals, photodegradation experiments were carried out as a test case. Interestingly, under UV-vis irradiation, the degradation efficiency of CSB′B was roughly one order lower than that of P25 titania nanoparticles; however, it was almost five times higher when driven by visible light under identical conditions. The water stability of CSB′B perovskite and suppression of the oxidative degradation of Sn were confirmed through XRD and XPS analyses after photocatalysis. Moreover, by employing experimental parameters, DFT-based first-principles calculations were performed, which demonstrated an excellent qualitative agreement between experimental and theoretical outcomes. The as-synthesized Bi-doped CSB might be a stable halide perovskite with potential in visible-light-driven applications. RSC 2023-10-04 /pmc/articles/PMC10628993/ /pubmed/37941959 http://dx.doi.org/10.1039/d3na00309d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Adib, Md. Asif
Sharmin, Fahmida
Basith, M. A.
Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title_full Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title_fullStr Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title_full_unstemmed Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title_short Tuning the morphology, stability and optical properties of CsSnBr(3) nanocrystals through bismuth doping for visible-light-driven applications
title_sort tuning the morphology, stability and optical properties of cssnbr(3) nanocrystals through bismuth doping for visible-light-driven applications
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628993/
https://www.ncbi.nlm.nih.gov/pubmed/37941959
http://dx.doi.org/10.1039/d3na00309d
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