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Interfacial Self-Assembly and Oriented Attachment in the Family of PbX (X = S, Se, Te) Nanocrystals
[Image: see text] The realization of materials with new optoelectronic properties draws much scientific attention toward the field of nanocrystal superstructures. Low-dimensional superstructures created by interfacial assembly and oriented attachment of PbSe nanocrystals are a striking example becau...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical
Society
2018
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6004561/ https://www.ncbi.nlm.nih.gov/pubmed/29930743 http://dx.doi.org/10.1021/acs.jpcc.8b01876 |
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author | van Overbeek, Carlo Peters, Joep L. van Rossum, Susan A. P. Smits, Marc van Huis, Marijn A. Vanmaekelbergh, Daniel |
author_facet | van Overbeek, Carlo Peters, Joep L. van Rossum, Susan A. P. Smits, Marc van Huis, Marijn A. Vanmaekelbergh, Daniel |
author_sort | van Overbeek, Carlo |
collection | PubMed |
description | [Image: see text] The realization of materials with new optoelectronic properties draws much scientific attention toward the field of nanocrystal superstructures. Low-dimensional superstructures created by interfacial assembly and oriented attachment of PbSe nanocrystals are a striking example because theory showed that PbSe sheets with a honeycomb geometry possess non-trivial flat bands and Dirac cones in the valence and conduction bands. Here, we report on the formation of one-dimensional linear and zigzag structures and two-dimensional (2D) square and honeycomb structures for the entire lead chalcogenide family: PbX (X = S, Se, Te). We observe that PbTe, with a lower bulk melting temperature and enthalpy of formation than those of PbSe, shows a higher nanocrystal surface reactivity, such that the surface must be passivated and the reaction conditions moderated to obtain reasonably ordered superstructures. The present findings constitute a step forward in the realization of a larger family of atomically coherent 2D superstructures with variable IV–VI and II–VI compositions and with electronic properties dictated by the nanogeometry. |
format | Online Article Text |
id | pubmed-6004561 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Chemical
Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-60045612018-06-19 Interfacial Self-Assembly and Oriented Attachment in the Family of PbX (X = S, Se, Te) Nanocrystals van Overbeek, Carlo Peters, Joep L. van Rossum, Susan A. P. Smits, Marc van Huis, Marijn A. Vanmaekelbergh, Daniel J Phys Chem C Nanomater Interfaces [Image: see text] The realization of materials with new optoelectronic properties draws much scientific attention toward the field of nanocrystal superstructures. Low-dimensional superstructures created by interfacial assembly and oriented attachment of PbSe nanocrystals are a striking example because theory showed that PbSe sheets with a honeycomb geometry possess non-trivial flat bands and Dirac cones in the valence and conduction bands. Here, we report on the formation of one-dimensional linear and zigzag structures and two-dimensional (2D) square and honeycomb structures for the entire lead chalcogenide family: PbX (X = S, Se, Te). We observe that PbTe, with a lower bulk melting temperature and enthalpy of formation than those of PbSe, shows a higher nanocrystal surface reactivity, such that the surface must be passivated and the reaction conditions moderated to obtain reasonably ordered superstructures. The present findings constitute a step forward in the realization of a larger family of atomically coherent 2D superstructures with variable IV–VI and II–VI compositions and with electronic properties dictated by the nanogeometry. American Chemical Society 2018-05-14 2018-06-14 /pmc/articles/PMC6004561/ /pubmed/29930743 http://dx.doi.org/10.1021/acs.jpcc.8b01876 Text en Copyright © 2018 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. |
spellingShingle | van Overbeek, Carlo Peters, Joep L. van Rossum, Susan A. P. Smits, Marc van Huis, Marijn A. Vanmaekelbergh, Daniel Interfacial Self-Assembly and Oriented Attachment in the Family of PbX (X = S, Se, Te) Nanocrystals |
title | Interfacial Self-Assembly and Oriented Attachment
in the Family of PbX (X = S, Se, Te) Nanocrystals |
title_full | Interfacial Self-Assembly and Oriented Attachment
in the Family of PbX (X = S, Se, Te) Nanocrystals |
title_fullStr | Interfacial Self-Assembly and Oriented Attachment
in the Family of PbX (X = S, Se, Te) Nanocrystals |
title_full_unstemmed | Interfacial Self-Assembly and Oriented Attachment
in the Family of PbX (X = S, Se, Te) Nanocrystals |
title_short | Interfacial Self-Assembly and Oriented Attachment
in the Family of PbX (X = S, Se, Te) Nanocrystals |
title_sort | interfacial self-assembly and oriented attachment
in the family of pbx (x = s, se, te) nanocrystals |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6004561/ https://www.ncbi.nlm.nih.gov/pubmed/29930743 http://dx.doi.org/10.1021/acs.jpcc.8b01876 |
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