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Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals

[Image: see text] Optoelectronic devices based on lead halide perovskites are processed in facile ways, yet are remarkably efficient. There are extensive research efforts investigating lead-free perovskite and perovskite-related compounds, yet there are challenges to synthesize these materials in fo...

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Autores principales: Abfalterer, Anna, Shamsi, Javad, Kubicki, Dominik J., Savory, Christopher N., Xiao, James, Divitini, Giorgio, Li, Weiwei, Macpherson, Stuart, Gałkowski, Krzysztof, MacManus-Driscoll, Judith L., Scanlon, David O., Stranks, Samuel D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7724740/
https://www.ncbi.nlm.nih.gov/pubmed/33313512
http://dx.doi.org/10.1021/acsmaterialslett.0c00393
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author Abfalterer, Anna
Shamsi, Javad
Kubicki, Dominik J.
Savory, Christopher N.
Xiao, James
Divitini, Giorgio
Li, Weiwei
Macpherson, Stuart
Gałkowski, Krzysztof
MacManus-Driscoll, Judith L.
Scanlon, David O.
Stranks, Samuel D.
author_facet Abfalterer, Anna
Shamsi, Javad
Kubicki, Dominik J.
Savory, Christopher N.
Xiao, James
Divitini, Giorgio
Li, Weiwei
Macpherson, Stuart
Gałkowski, Krzysztof
MacManus-Driscoll, Judith L.
Scanlon, David O.
Stranks, Samuel D.
author_sort Abfalterer, Anna
collection PubMed
description [Image: see text] Optoelectronic devices based on lead halide perovskites are processed in facile ways, yet are remarkably efficient. There are extensive research efforts investigating lead-free perovskite and perovskite-related compounds, yet there are challenges to synthesize these materials in forms that can be directly integrated into thin film devices rather than as bulk powders. Here, we report on the colloidal synthesis and characterization of lead-free, antifluorite Cs(2)ZrX(6) (X = Cl, Br) nanocrystals that are readily processed into thin films. We use transmission electron microscopy and powder X-ray diffraction measurements to determine their size and structural properties, and solid-state nuclear magnetic resonance measurements reveal the presence of oleate ligand, together with a disordered distribution of Cs surface sites. Density functional theory calculations reveal the band structure and fundamental band gaps of 5.06 and 3.91 eV for Cs(2)ZrCl(6) and Cs(2)ZrBr(6), respectively, consistent with experimental values. Finally, we demonstrate that the Cs(2)ZrCl(6) and Cs(2)ZrBr(6) nanocrystal thin films exhibit tunable, broad white photoluminescence with quantum yields of 45% for the latter, with respective peaks in the blue and green spectral regions and mixed systems exhibiting properties between them. Our work represents a critical step toward the application of lead-free Cs(2)ZrX(6) nanocrystal thin films into next-generation light-emitting applications.
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spelling pubmed-77247402020-12-09 Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals Abfalterer, Anna Shamsi, Javad Kubicki, Dominik J. Savory, Christopher N. Xiao, James Divitini, Giorgio Li, Weiwei Macpherson, Stuart Gałkowski, Krzysztof MacManus-Driscoll, Judith L. Scanlon, David O. Stranks, Samuel D. ACS Mater Lett [Image: see text] Optoelectronic devices based on lead halide perovskites are processed in facile ways, yet are remarkably efficient. There are extensive research efforts investigating lead-free perovskite and perovskite-related compounds, yet there are challenges to synthesize these materials in forms that can be directly integrated into thin film devices rather than as bulk powders. Here, we report on the colloidal synthesis and characterization of lead-free, antifluorite Cs(2)ZrX(6) (X = Cl, Br) nanocrystals that are readily processed into thin films. We use transmission electron microscopy and powder X-ray diffraction measurements to determine their size and structural properties, and solid-state nuclear magnetic resonance measurements reveal the presence of oleate ligand, together with a disordered distribution of Cs surface sites. Density functional theory calculations reveal the band structure and fundamental band gaps of 5.06 and 3.91 eV for Cs(2)ZrCl(6) and Cs(2)ZrBr(6), respectively, consistent with experimental values. Finally, we demonstrate that the Cs(2)ZrCl(6) and Cs(2)ZrBr(6) nanocrystal thin films exhibit tunable, broad white photoluminescence with quantum yields of 45% for the latter, with respective peaks in the blue and green spectral regions and mixed systems exhibiting properties between them. Our work represents a critical step toward the application of lead-free Cs(2)ZrX(6) nanocrystal thin films into next-generation light-emitting applications. American Chemical Society 2020-11-11 2020-12-07 /pmc/articles/PMC7724740/ /pubmed/33313512 http://dx.doi.org/10.1021/acsmaterialslett.0c00393 Text en © 2020 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 Abfalterer, Anna
Shamsi, Javad
Kubicki, Dominik J.
Savory, Christopher N.
Xiao, James
Divitini, Giorgio
Li, Weiwei
Macpherson, Stuart
Gałkowski, Krzysztof
MacManus-Driscoll, Judith L.
Scanlon, David O.
Stranks, Samuel D.
Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title_full Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title_fullStr Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title_full_unstemmed Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title_short Colloidal Synthesis and Optical Properties of Perovskite-Inspired Cesium Zirconium Halide Nanocrystals
title_sort colloidal synthesis and optical properties of perovskite-inspired cesium zirconium halide nanocrystals
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7724740/
https://www.ncbi.nlm.nih.gov/pubmed/33313512
http://dx.doi.org/10.1021/acsmaterialslett.0c00393
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