Cu2-xS1-ySey alloy nanocrystals with broadly tunable near-infrared localized surface plasmon resonance

Xin Liu; Xianliang Wang; Mark T. Swihart

doi:10.1021/cm402848k

Cu_2-xS_1-ySe_y alloy nanocrystals with broadly tunable near-infrared localized surface plasmon resonance

Xin Liu
, Xianliang Wang
, Mark T. Swihart

Department of Chemical and Biological Engineering

University at Buffalo

SUNY Buffalo

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

91 Scopus citations

Abstract

We report facile methods for synthesizing monodisperse Cu _2-xS_1-ySe_y alloy nanocrystals (NCs) with tunable composition and size. The near-infrared (NIR) localized surface plasmon resonance (LSPR) in these self-doped Cu_2-xS_1-ySe _y alloy NCs can be tuned over a broad range from 975 to 1650 nm. The LSPR shifted to longer wavelength with increasing sulfur content and with increased concentration of oleic acid used in the synthesis. This method provides new possibilities for broadly tuning LSPR wavelength by controlling the anion composition, cationic vacancy concentration, and surface ligands in heavily doped Cu_2-xS_1-ySe_y alloy NCs. This opens up access to LSPR absorbance across a broad portion of the near-IR using small colloidal quasi-isotropic NCs.

Original language	English
Pages (from-to)	4402-4408
Number of pages	7
Journal	Chemistry of Materials
Volume	25
Issue number	21
DOIs	https://doi.org/10.1021/cm402848k
State	Published - Nov 12 2013

Keywords

colloidal synthesis
doped semiconductor nanocrystals
localized surface plasmon resonance
ternary semiconductor nanocrystals

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10.1021/cm402848k

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title = "Cu2-xS1-ySey alloy nanocrystals with broadly tunable near-infrared localized surface plasmon resonance",

abstract = "We report facile methods for synthesizing monodisperse Cu 2-xS1-ySey alloy nanocrystals (NCs) with tunable composition and size. The near-infrared (NIR) localized surface plasmon resonance (LSPR) in these self-doped Cu2-xS1-ySe y alloy NCs can be tuned over a broad range from 975 to 1650 nm. The LSPR shifted to longer wavelength with increasing sulfur content and with increased concentration of oleic acid used in the synthesis. This method provides new possibilities for broadly tuning LSPR wavelength by controlling the anion composition, cationic vacancy concentration, and surface ligands in heavily doped Cu2-xS1-ySey alloy NCs. This opens up access to LSPR absorbance across a broad portion of the near-IR using small colloidal quasi-isotropic NCs.",

keywords = "colloidal synthesis, doped semiconductor nanocrystals, localized surface plasmon resonance, ternary semiconductor nanocrystals",

author = "Xin Liu and Xianliang Wang and Swihart, \{Mark T.\}",

year = "2013",

month = nov,

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doi = "10.1021/cm402848k",

language = "English",

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journal = "Chemistry of Materials",

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TY - JOUR

T1 - Cu2-xS1-ySey alloy nanocrystals with broadly tunable near-infrared localized surface plasmon resonance

AU - Liu, Xin

AU - Wang, Xianliang

AU - Swihart, Mark T.

PY - 2013/11/12

Y1 - 2013/11/12

N2 - We report facile methods for synthesizing monodisperse Cu 2-xS1-ySey alloy nanocrystals (NCs) with tunable composition and size. The near-infrared (NIR) localized surface plasmon resonance (LSPR) in these self-doped Cu2-xS1-ySe y alloy NCs can be tuned over a broad range from 975 to 1650 nm. The LSPR shifted to longer wavelength with increasing sulfur content and with increased concentration of oleic acid used in the synthesis. This method provides new possibilities for broadly tuning LSPR wavelength by controlling the anion composition, cationic vacancy concentration, and surface ligands in heavily doped Cu2-xS1-ySey alloy NCs. This opens up access to LSPR absorbance across a broad portion of the near-IR using small colloidal quasi-isotropic NCs.

AB - We report facile methods for synthesizing monodisperse Cu 2-xS1-ySey alloy nanocrystals (NCs) with tunable composition and size. The near-infrared (NIR) localized surface plasmon resonance (LSPR) in these self-doped Cu2-xS1-ySe y alloy NCs can be tuned over a broad range from 975 to 1650 nm. The LSPR shifted to longer wavelength with increasing sulfur content and with increased concentration of oleic acid used in the synthesis. This method provides new possibilities for broadly tuning LSPR wavelength by controlling the anion composition, cationic vacancy concentration, and surface ligands in heavily doped Cu2-xS1-ySey alloy NCs. This opens up access to LSPR absorbance across a broad portion of the near-IR using small colloidal quasi-isotropic NCs.

KW - colloidal synthesis

KW - doped semiconductor nanocrystals

KW - localized surface plasmon resonance

KW - ternary semiconductor nanocrystals

UR - https://www.scopus.com/pages/publications/84887579063

U2 - 10.1021/cm402848k

DO - 10.1021/cm402848k

M3 - Article

SN - 0897-4756

VL - 25

SP - 4402

EP - 4408

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 21

ER -

Cu_2-xS_1-ySe_y alloy nanocrystals with broadly tunable near-infrared localized surface plasmon resonance

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