Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites

[Image: see text] Cesium lead halides have intrinsically unstable crystal lattices and easily transform within perovskite and nonperovskite structures. In this work, we explore the conversion of the perovskite CsPbBr(3) into Cs(4)PbBr(6) in the presence of PbS at 450 °C to produce doped nanocrystal-...

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Autores principales: Calcabrini, Mariano, Genç, Aziz, Liu, Yu, Kleinhanns, Tobias, Lee, Seungho, Dirin, Dmitry N., Akkerman, Quinten A., Kovalenko, Maksym V., Arbiol, Jordi, Ibáñez, Maria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7887873/
https://www.ncbi.nlm.nih.gov/pubmed/33614964
http://dx.doi.org/10.1021/acsenergylett.0c02448
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author Calcabrini, Mariano
Genç, Aziz
Liu, Yu
Kleinhanns, Tobias
Lee, Seungho
Dirin, Dmitry N.
Akkerman, Quinten A.
Kovalenko, Maksym V.
Arbiol, Jordi
Ibáñez, Maria
author_facet Calcabrini, Mariano
Genç, Aziz
Liu, Yu
Kleinhanns, Tobias
Lee, Seungho
Dirin, Dmitry N.
Akkerman, Quinten A.
Kovalenko, Maksym V.
Arbiol, Jordi
Ibáñez, Maria
author_sort Calcabrini, Mariano
collection PubMed
description [Image: see text] Cesium lead halides have intrinsically unstable crystal lattices and easily transform within perovskite and nonperovskite structures. In this work, we explore the conversion of the perovskite CsPbBr(3) into Cs(4)PbBr(6) in the presence of PbS at 450 °C to produce doped nanocrystal-based composites with embedded Cs(4)PbBr(6) nanoprecipitates. We show that PbBr(2) is extracted from CsPbBr(3) and diffuses into the PbS lattice with a consequent increase in the concentration of free charge carriers. This new doping strategy enables the adjustment of the density of charge carriers between 10(19) and 10(20) cm(–3), and it may serve as a general strategy for doping other nanocrystal-based semiconductors.
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spelling pubmed-78878732021-02-17 Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites Calcabrini, Mariano Genç, Aziz Liu, Yu Kleinhanns, Tobias Lee, Seungho Dirin, Dmitry N. Akkerman, Quinten A. Kovalenko, Maksym V. Arbiol, Jordi Ibáñez, Maria ACS Energy Lett [Image: see text] Cesium lead halides have intrinsically unstable crystal lattices and easily transform within perovskite and nonperovskite structures. In this work, we explore the conversion of the perovskite CsPbBr(3) into Cs(4)PbBr(6) in the presence of PbS at 450 °C to produce doped nanocrystal-based composites with embedded Cs(4)PbBr(6) nanoprecipitates. We show that PbBr(2) is extracted from CsPbBr(3) and diffuses into the PbS lattice with a consequent increase in the concentration of free charge carriers. This new doping strategy enables the adjustment of the density of charge carriers between 10(19) and 10(20) cm(–3), and it may serve as a general strategy for doping other nanocrystal-based semiconductors. American Chemical Society 2021-01-21 2021-02-12 /pmc/articles/PMC7887873/ /pubmed/33614964 http://dx.doi.org/10.1021/acsenergylett.0c02448 Text en © 2021 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Calcabrini, Mariano
Genç, Aziz
Liu, Yu
Kleinhanns, Tobias
Lee, Seungho
Dirin, Dmitry N.
Akkerman, Quinten A.
Kovalenko, Maksym V.
Arbiol, Jordi
Ibáñez, Maria
Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title_full Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title_fullStr Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title_full_unstemmed Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title_short Exploiting the Lability of Metal Halide Perovskites for Doping Semiconductor Nanocomposites
title_sort exploiting the lability of metal halide perovskites for doping semiconductor nanocomposites
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7887873/
https://www.ncbi.nlm.nih.gov/pubmed/33614964
http://dx.doi.org/10.1021/acsenergylett.0c02448
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