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Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control
[Image: see text] We report a colloidal synthesis approach to CsPbBr(3) nanoplatelets (NPLs). The nucleation and growth of the platelets, which takes place at room temperature, is triggered by the injection of acetone in a mixture of precursors that would remain unreactive otherwise. The low growth...
Autores principales: | , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2016
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4731826/ https://www.ncbi.nlm.nih.gov/pubmed/26726764 http://dx.doi.org/10.1021/jacs.5b12124 |
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author | Akkerman, Quinten A. Motti, Silvia Genaro Srimath Kandada, Ajay Ram Mosconi, Edoardo D’Innocenzo, Valerio Bertoni, Giovanni Marras, Sergio Kamino, Brett A. Miranda, Laura De Angelis, Filippo Petrozza, Annamaria Prato, Mirko Manna, Liberato |
author_facet | Akkerman, Quinten A. Motti, Silvia Genaro Srimath Kandada, Ajay Ram Mosconi, Edoardo D’Innocenzo, Valerio Bertoni, Giovanni Marras, Sergio Kamino, Brett A. Miranda, Laura De Angelis, Filippo Petrozza, Annamaria Prato, Mirko Manna, Liberato |
author_sort | Akkerman, Quinten A. |
collection | PubMed |
description | [Image: see text] We report a colloidal synthesis approach to CsPbBr(3) nanoplatelets (NPLs). The nucleation and growth of the platelets, which takes place at room temperature, is triggered by the injection of acetone in a mixture of precursors that would remain unreactive otherwise. The low growth temperature enables the control of the plate thickness, which can be precisely tuned from 3 to 5 monolayers. The strong two-dimensional confinement of the carriers at such small vertical sizes is responsible for a narrow PL, strong excitonic absorption, and a blue shift of the optical band gap by more than 0.47 eV compared to that of bulk CsPbBr(3). We also show that the composition of the NPLs can be varied all the way to CsPbBr(3) or CsPbI(3) by anion exchange, with preservation of the size and shape of the starting particles. The blue fluorescent CsPbCl(3) NPLs represent a new member of the scarcely populated group of blue-emitting colloidal nanocrystals. The exciton dynamics were found to be independent of the extent of 2D confinement in these platelets, and this was supported by band structure calculations. |
format | Online Article Text |
id | pubmed-4731826 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-47318262016-02-10 Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control Akkerman, Quinten A. Motti, Silvia Genaro Srimath Kandada, Ajay Ram Mosconi, Edoardo D’Innocenzo, Valerio Bertoni, Giovanni Marras, Sergio Kamino, Brett A. Miranda, Laura De Angelis, Filippo Petrozza, Annamaria Prato, Mirko Manna, Liberato J Am Chem Soc [Image: see text] We report a colloidal synthesis approach to CsPbBr(3) nanoplatelets (NPLs). The nucleation and growth of the platelets, which takes place at room temperature, is triggered by the injection of acetone in a mixture of precursors that would remain unreactive otherwise. The low growth temperature enables the control of the plate thickness, which can be precisely tuned from 3 to 5 monolayers. The strong two-dimensional confinement of the carriers at such small vertical sizes is responsible for a narrow PL, strong excitonic absorption, and a blue shift of the optical band gap by more than 0.47 eV compared to that of bulk CsPbBr(3). We also show that the composition of the NPLs can be varied all the way to CsPbBr(3) or CsPbI(3) by anion exchange, with preservation of the size and shape of the starting particles. The blue fluorescent CsPbCl(3) NPLs represent a new member of the scarcely populated group of blue-emitting colloidal nanocrystals. The exciton dynamics were found to be independent of the extent of 2D confinement in these platelets, and this was supported by band structure calculations. American Chemical Society 2016-01-02 2016-01-27 /pmc/articles/PMC4731826/ /pubmed/26726764 http://dx.doi.org/10.1021/jacs.5b12124 Text en Copyright © 2016 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Akkerman, Quinten A. Motti, Silvia Genaro Srimath Kandada, Ajay Ram Mosconi, Edoardo D’Innocenzo, Valerio Bertoni, Giovanni Marras, Sergio Kamino, Brett A. Miranda, Laura De Angelis, Filippo Petrozza, Annamaria Prato, Mirko Manna, Liberato Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title | Solution
Synthesis Approach to Colloidal Cesium Lead
Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title_full | Solution
Synthesis Approach to Colloidal Cesium Lead
Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title_fullStr | Solution
Synthesis Approach to Colloidal Cesium Lead
Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title_full_unstemmed | Solution
Synthesis Approach to Colloidal Cesium Lead
Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title_short | Solution
Synthesis Approach to Colloidal Cesium Lead
Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control |
title_sort | solution
synthesis approach to colloidal cesium lead
halide perovskite nanoplatelets with monolayer-level thickness control |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4731826/ https://www.ncbi.nlm.nih.gov/pubmed/26726764 http://dx.doi.org/10.1021/jacs.5b12124 |
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