Highly luminescent CuGaxIn1-xSySe2-y nanocrystals from organometallic single-source precursors

Oliver Kluge; Ilan Jen La Plante; Mahmud Diab; Michael Volokh; Ayelet Teitelboim; Taleb Mokari

doi:10.1039/c4tc02842b

Highly luminescent CuGa_xIn_1-xS_ySe_2-y nanocrystals from organometallic single-source precursors

Oliver Kluge, Ilan Jen La Plante, Mahmud Diab, Michael Volokh, Ayelet Teitelboim, Taleb Mokari

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

Abstract

The solution-based thermolysis of the organometallic single-source precursors [(ⁱPr₃PCu)₄(MeGa)₄S₆] (1) and [(ⁱPr₃PCu)₄(MeIn)₄Se₆] (2) is investigated. Multinary semiconductor nanocrystals with sizes in the range of 3-10 nm are obtained by a simple heating-up process in a solvent mixture of long-chain alkyl thiols and amines. The thiols also serve as a sulfur source and capping ligand for the nanoparticles. By mixing 1 and 2, nanocrystal compositions in the range from CuGaS₂ to CuInSSe are accessible. Surface passivation of the nanocrystals with ZnS results in high stability and bright photoluminescence (PL). PL maxima are observed in the spectral range between 600 and 800 nm, depending on the size and composition of the nanocrystals. The highest PL quantum yields exceed 50% and are observed for a gallium to indium ratio of 1:5.

Original language	English
Pages (from-to)	4657-4662
Number of pages	6
Journal	Journal of Materials Chemistry C
Volume	3
Issue number	18
DOIs	https://doi.org/10.1039/c4tc02842b
State	Published - 14 May 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2015.

ASJC Scopus subject areas

General Chemistry
Materials Chemistry

Access to Document

10.1039/c4tc02842b

Cite this

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title = "Highly luminescent CuGaxIn1-xSySe2-y nanocrystals from organometallic single-source precursors",

abstract = "The solution-based thermolysis of the organometallic single-source precursors [(iPr3PCu)4(MeGa)4S6] (1) and [(iPr3PCu)4(MeIn)4Se6] (2) is investigated. Multinary semiconductor nanocrystals with sizes in the range of 3-10 nm are obtained by a simple heating-up process in a solvent mixture of long-chain alkyl thiols and amines. The thiols also serve as a sulfur source and capping ligand for the nanoparticles. By mixing 1 and 2, nanocrystal compositions in the range from CuGaS2 to CuInSSe are accessible. Surface passivation of the nanocrystals with ZnS results in high stability and bright photoluminescence (PL). PL maxima are observed in the spectral range between 600 and 800 nm, depending on the size and composition of the nanocrystals. The highest PL quantum yields exceed 50% and are observed for a gallium to indium ratio of 1:5.",

author = "Oliver Kluge and Plante, {Ilan Jen La} and Mahmud Diab and Michael Volokh and Ayelet Teitelboim and Taleb Mokari",

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T1 - Highly luminescent CuGaxIn1-xSySe2-y nanocrystals from organometallic single-source precursors

AU - Kluge, Oliver

AU - Plante, Ilan Jen La

AU - Diab, Mahmud

AU - Volokh, Michael

AU - Teitelboim, Ayelet

AU - Mokari, Taleb

PY - 2015/5/14

Y1 - 2015/5/14

N2 - The solution-based thermolysis of the organometallic single-source precursors [(iPr3PCu)4(MeGa)4S6] (1) and [(iPr3PCu)4(MeIn)4Se6] (2) is investigated. Multinary semiconductor nanocrystals with sizes in the range of 3-10 nm are obtained by a simple heating-up process in a solvent mixture of long-chain alkyl thiols and amines. The thiols also serve as a sulfur source and capping ligand for the nanoparticles. By mixing 1 and 2, nanocrystal compositions in the range from CuGaS2 to CuInSSe are accessible. Surface passivation of the nanocrystals with ZnS results in high stability and bright photoluminescence (PL). PL maxima are observed in the spectral range between 600 and 800 nm, depending on the size and composition of the nanocrystals. The highest PL quantum yields exceed 50% and are observed for a gallium to indium ratio of 1:5.

AB - The solution-based thermolysis of the organometallic single-source precursors [(iPr3PCu)4(MeGa)4S6] (1) and [(iPr3PCu)4(MeIn)4Se6] (2) is investigated. Multinary semiconductor nanocrystals with sizes in the range of 3-10 nm are obtained by a simple heating-up process in a solvent mixture of long-chain alkyl thiols and amines. The thiols also serve as a sulfur source and capping ligand for the nanoparticles. By mixing 1 and 2, nanocrystal compositions in the range from CuGaS2 to CuInSSe are accessible. Surface passivation of the nanocrystals with ZnS results in high stability and bright photoluminescence (PL). PL maxima are observed in the spectral range between 600 and 800 nm, depending on the size and composition of the nanocrystals. The highest PL quantum yields exceed 50% and are observed for a gallium to indium ratio of 1:5.

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