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Structural investigations into colour-tuneable fluorescent InZnP-based quantum dots from zinc carboxylate and aminophosphine precursors

Burkitt-Gray, Mary ; Casavola, Marianna ; Clark, Pip C.J. ; Fairclough, Simon M. ; Flavell, Wendy R. ; Fleck, Roland A. ; Haigh, Sarah J. ; Ke, Jack Chun Ren ; Leontiadou, Marina and Lewis, Edward A. , et al. (2022) In Nanoscale 15(4). p.1763-1774
Abstract

Fluorescent InP-based quantum dots have emerged as valuable nanomaterials for display technologies, biological imaging, and optoelectronic applications. The inclusion of zinc can enhance both their emissive and structural properties and reduce interfacial defects with ZnS or CdS shells. However, the sub-particle distribution of zinc and the role this element plays often remains unclear, and it has previously proved challenging to synthesise Zn-alloyed InP-based nanoparticles using aminophosphine precursors. In this report, we describe the synthesis of alloyed InZnP using zinc carboxylates, achieving colour-tuneable fluorescence from the unshelled core materials, followed by a one-pot ZnS or CdS deposition using diethyldithiocarbamate... (More)

Fluorescent InP-based quantum dots have emerged as valuable nanomaterials for display technologies, biological imaging, and optoelectronic applications. The inclusion of zinc can enhance both their emissive and structural properties and reduce interfacial defects with ZnS or CdS shells. However, the sub-particle distribution of zinc and the role this element plays often remains unclear, and it has previously proved challenging to synthesise Zn-alloyed InP-based nanoparticles using aminophosphine precursors. In this report, we describe the synthesis of alloyed InZnP using zinc carboxylates, achieving colour-tuneable fluorescence from the unshelled core materials, followed by a one-pot ZnS or CdS deposition using diethyldithiocarbamate precursors. Structural analysis revealed that the “core/shell” particles synthesised here were more accurately described as homogeneous extended alloys with the constituent shell elements diffusing through the entire core, including full-depth inclusion of zinc.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanoscale
volume
15
issue
4
pages
12 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:85146185525
  • pmid:36601869
ISSN
2040-3364
DOI
10.1039/d2nr02803d
language
English
LU publication?
yes
id
df36fba7-15bb-4dc3-9b2c-866b04ec35fe
date added to LUP
2023-02-16 09:42:59
date last changed
2024-06-23 10:40:47
@article{df36fba7-15bb-4dc3-9b2c-866b04ec35fe,
  abstract     = {{<p>Fluorescent InP-based quantum dots have emerged as valuable nanomaterials for display technologies, biological imaging, and optoelectronic applications. The inclusion of zinc can enhance both their emissive and structural properties and reduce interfacial defects with ZnS or CdS shells. However, the sub-particle distribution of zinc and the role this element plays often remains unclear, and it has previously proved challenging to synthesise Zn-alloyed InP-based nanoparticles using aminophosphine precursors. In this report, we describe the synthesis of alloyed InZnP using zinc carboxylates, achieving colour-tuneable fluorescence from the unshelled core materials, followed by a one-pot ZnS or CdS deposition using diethyldithiocarbamate precursors. Structural analysis revealed that the “core/shell” particles synthesised here were more accurately described as homogeneous extended alloys with the constituent shell elements diffusing through the entire core, including full-depth inclusion of zinc.</p>}},
  author       = {{Burkitt-Gray, Mary and Casavola, Marianna and Clark, Pip C.J. and Fairclough, Simon M. and Flavell, Wendy R. and Fleck, Roland A. and Haigh, Sarah J. and Ke, Jack Chun Ren and Leontiadou, Marina and Lewis, Edward A. and Osiecki, Jacek and Qazi-Chaudhry, Basma and Vizcay-Barrena, Gema and Wichiansee, Wijittra and Green, Mark}},
  issn         = {{2040-3364}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{1763--1774}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Nanoscale}},
  title        = {{Structural investigations into colour-tuneable fluorescent InZnP-based quantum dots from zinc carboxylate and aminophosphine precursors}},
  url          = {{http://dx.doi.org/10.1039/d2nr02803d}},
  doi          = {{10.1039/d2nr02803d}},
  volume       = {{15}},
  year         = {{2022}},
}