Doping group IIB metal ions into quantum dot shells via the one-pot decomposition of metal-dithiocarbamates

Joseph C. Bear; Nathan Hollingsworth; Anna Roffey; Paul D. Mcnaughter; Andrew G. Mayes; Thomas J. Macdonald; Thomas Nann; Wing H. Ng; Anthony J. Kenyon; Graeme Hogarth; Ivan P. Parkin

doi:10.1002/adom.201400570

Doping group IIB metal ions into quantum dot shells via the one-pot decomposition of metal-dithiocarbamates

Joseph C. Bear, Nathan Hollingsworth^*, Anna Roffey, Paul D. Mcnaughter, Andrew G. Mayes, Thomas J. Macdonald, Thomas Nann, Wing H. Ng, Anthony J. Kenyon, Graeme Hogarth, Ivan P. Parkin

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

Almost half of solar energy reaching the Earth is in the infrared, and for solar cells, IR absorbing/emitting quantum dots are highly effective photovoltaic materials. As a possible approach to generating such materials, an investigation into the incorporation of group IIB metal ions during the shelling of II-VI and III-V semiconductor core/shell quantum dots is presented. Quantum dot shells consist of ZnS and an additional metal sulphide, obtained from the decomposition of metal dithiocarbamate single-source precursors. Resultant quantum dots are characterized and interrogated using transmission electron microscopy, high-resolution transmission electron microscopy, electron diffraction, time-of-flight-secondary ion mass spectroscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, photoluminescence emission and lifetime spectroscopy, and UV-vis spectroscopy. It is demonstrated that on incorporation of an additional metal sulphide during shelling, photoluminescence properties change dramatically according to the element and indeed, its concentration. Tunable infrared emission is achieved for Hg addition, thus a one-pot method for the synthesis of infrared emitting quantum dots from visible luminescent cores is hereby developed.

Original language	English
Pages (from-to)	704-712
Number of pages	9
Journal	Advanced Optical Materials
Volume	3
Issue number	5
Early online date	24 Feb 2015
DOIs	https://doi.org/10.1002/adom.201400570
Publication status	Published - May 2015

Keywords

Core/shells
Photoluminescence
Quantum dots
Single source

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10.1002/adom.201400570

Doping Group IIB Metal_BEAR_Published2015_GREEM SMSubmitted manuscript, 1.25 MB

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title = "Doping group IIB metal ions into quantum dot shells via the one-pot decomposition of metal-dithiocarbamates",

abstract = "Almost half of solar energy reaching the Earth is in the infrared, and for solar cells, IR absorbing/emitting quantum dots are highly effective photovoltaic materials. As a possible approach to generating such materials, an investigation into the incorporation of group IIB metal ions during the shelling of II-VI and III-V semiconductor core/shell quantum dots is presented. Quantum dot shells consist of ZnS and an additional metal sulphide, obtained from the decomposition of metal dithiocarbamate single-source precursors. Resultant quantum dots are characterized and interrogated using transmission electron microscopy, high-resolution transmission electron microscopy, electron diffraction, time-of-flight-secondary ion mass spectroscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, photoluminescence emission and lifetime spectroscopy, and UV-vis spectroscopy. It is demonstrated that on incorporation of an additional metal sulphide during shelling, photoluminescence properties change dramatically according to the element and indeed, its concentration. Tunable infrared emission is achieved for Hg addition, thus a one-pot method for the synthesis of infrared emitting quantum dots from visible luminescent cores is hereby developed.",

keywords = "Core/shells, Photoluminescence, Quantum dots, Single source",

author = "Bear, {Joseph C.} and Nathan Hollingsworth and Anna Roffey and Mcnaughter, {Paul D.} and Mayes, {Andrew G.} and Macdonald, {Thomas J.} and Thomas Nann and Ng, {Wing H.} and Kenyon, {Anthony J.} and Graeme Hogarth and Parkin, {Ivan P.}",

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doi = "10.1002/adom.201400570",

language = "English",

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AU - Bear, Joseph C.

AU - Hollingsworth, Nathan

AU - Roffey, Anna

AU - Mcnaughter, Paul D.

AU - Mayes, Andrew G.

AU - Macdonald, Thomas J.

AU - Nann, Thomas

AU - Ng, Wing H.

AU - Kenyon, Anthony J.

AU - Hogarth, Graeme

AU - Parkin, Ivan P.

PY - 2015/5

Y1 - 2015/5

N2 - Almost half of solar energy reaching the Earth is in the infrared, and for solar cells, IR absorbing/emitting quantum dots are highly effective photovoltaic materials. As a possible approach to generating such materials, an investigation into the incorporation of group IIB metal ions during the shelling of II-VI and III-V semiconductor core/shell quantum dots is presented. Quantum dot shells consist of ZnS and an additional metal sulphide, obtained from the decomposition of metal dithiocarbamate single-source precursors. Resultant quantum dots are characterized and interrogated using transmission electron microscopy, high-resolution transmission electron microscopy, electron diffraction, time-of-flight-secondary ion mass spectroscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, photoluminescence emission and lifetime spectroscopy, and UV-vis spectroscopy. It is demonstrated that on incorporation of an additional metal sulphide during shelling, photoluminescence properties change dramatically according to the element and indeed, its concentration. Tunable infrared emission is achieved for Hg addition, thus a one-pot method for the synthesis of infrared emitting quantum dots from visible luminescent cores is hereby developed.

AB - Almost half of solar energy reaching the Earth is in the infrared, and for solar cells, IR absorbing/emitting quantum dots are highly effective photovoltaic materials. As a possible approach to generating such materials, an investigation into the incorporation of group IIB metal ions during the shelling of II-VI and III-V semiconductor core/shell quantum dots is presented. Quantum dot shells consist of ZnS and an additional metal sulphide, obtained from the decomposition of metal dithiocarbamate single-source precursors. Resultant quantum dots are characterized and interrogated using transmission electron microscopy, high-resolution transmission electron microscopy, electron diffraction, time-of-flight-secondary ion mass spectroscopy, X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, photoluminescence emission and lifetime spectroscopy, and UV-vis spectroscopy. It is demonstrated that on incorporation of an additional metal sulphide during shelling, photoluminescence properties change dramatically according to the element and indeed, its concentration. Tunable infrared emission is achieved for Hg addition, thus a one-pot method for the synthesis of infrared emitting quantum dots from visible luminescent cores is hereby developed.

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KW - Single source

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ER -

Doping group IIB metal ions into quantum dot shells via the one-pot decomposition of metal-dithiocarbamates

Abstract

Keywords

UN SDGs

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