Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals: Tunable composition and optical properties

Keng Liang Ou, Jian Cin Fan, Jem Kun Chen, Chih Ching Huang, Liang Yih Chen, Jinn Hsuan Ho, Jia Yaw Chang

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

In this study, we demonstrate that Cu 2ZnSn(S xSe 1-x) 4 nanocrystals with a tunable bandgap could be synthesized by a "hot-injection" protocol. In this protocol, metal stearates dissolved in oleylamine were injected into a hot solution of anion precursors in 1-octadecene (ODE) at a given reaction temperature. ODE, which is a low-cost, low-hazard, and air-stable liquid, was used as the solvent. Oleylamine was chosen as both the reagent to activate the precursors and as the capping agent for the nanocrystals. The composition of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals could be adjusted across the x range from 0 to 1 by varying the S/Se reactant ratio. The lattice parameters (a and c) measured from X-ray diffraction patterns decreased linearly with increasing Se content. This trend was consistent with Vegard's law, which confirmed the formation of homogeneous Cu 2ZnSn(S xSe 1-x) 4 nanocrystals. The A 1 symmetry modes of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals seen by Raman spectroscopy gradually shifted with decreasing x (S content) to the lower frequency side and completely disappeared when x = 0. The absorption spectra of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals revealed that the bandgaps of the nanocrystals could be adjusted over the range 1.0-1.5 eV by decreasing the S content. The relatively small value for the bowing parameter indicated that the synthesized Cu 2ZnSn(S xSe 1-x) 4 nanocrystals had good miscibility.

Original languageEnglish
Pages (from-to)14667-14673
Number of pages7
JournalJournal of Materials Chemistry
Volume22
Issue number29
DOIs
Publication statusPublished - Aug 7 2012

Fingerprint

Nanocrystals
Optical properties
Chemical analysis
Energy gap
Stearates
Bending (forming)
Crystal symmetry
Diffraction patterns
Lattice constants
Anions
Raman spectroscopy
Absorption spectra
Hazards
Negative ions
Solubility
Metals
X ray diffraction
Liquids
Air
Costs

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)

Cite this

Ou, K. L., Fan, J. C., Chen, J. K., Huang, C. C., Chen, L. Y., Ho, J. H., & Chang, J. Y. (2012). Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals: Tunable composition and optical properties. Journal of Materials Chemistry, 22(29), 14667-14673. https://doi.org/10.1039/c2jm31901b

Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals : Tunable composition and optical properties. / Ou, Keng Liang; Fan, Jian Cin; Chen, Jem Kun; Huang, Chih Ching; Chen, Liang Yih; Ho, Jinn Hsuan; Chang, Jia Yaw.

In: Journal of Materials Chemistry, Vol. 22, No. 29, 07.08.2012, p. 14667-14673.

Research output: Contribution to journalArticle

Ou, Keng Liang ; Fan, Jian Cin ; Chen, Jem Kun ; Huang, Chih Ching ; Chen, Liang Yih ; Ho, Jinn Hsuan ; Chang, Jia Yaw. / Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals : Tunable composition and optical properties. In: Journal of Materials Chemistry. 2012 ; Vol. 22, No. 29. pp. 14667-14673.
@article{3f8dccf76016405288b6291b1d9d23b0,
title = "Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals: Tunable composition and optical properties",
abstract = "In this study, we demonstrate that Cu 2ZnSn(S xSe 1-x) 4 nanocrystals with a tunable bandgap could be synthesized by a {"}hot-injection{"} protocol. In this protocol, metal stearates dissolved in oleylamine were injected into a hot solution of anion precursors in 1-octadecene (ODE) at a given reaction temperature. ODE, which is a low-cost, low-hazard, and air-stable liquid, was used as the solvent. Oleylamine was chosen as both the reagent to activate the precursors and as the capping agent for the nanocrystals. The composition of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals could be adjusted across the x range from 0 to 1 by varying the S/Se reactant ratio. The lattice parameters (a and c) measured from X-ray diffraction patterns decreased linearly with increasing Se content. This trend was consistent with Vegard's law, which confirmed the formation of homogeneous Cu 2ZnSn(S xSe 1-x) 4 nanocrystals. The A 1 symmetry modes of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals seen by Raman spectroscopy gradually shifted with decreasing x (S content) to the lower frequency side and completely disappeared when x = 0. The absorption spectra of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals revealed that the bandgaps of the nanocrystals could be adjusted over the range 1.0-1.5 eV by decreasing the S content. The relatively small value for the bowing parameter indicated that the synthesized Cu 2ZnSn(S xSe 1-x) 4 nanocrystals had good miscibility.",
author = "Ou, {Keng Liang} and Fan, {Jian Cin} and Chen, {Jem Kun} and Huang, {Chih Ching} and Chen, {Liang Yih} and Ho, {Jinn Hsuan} and Chang, {Jia Yaw}",
year = "2012",
month = "8",
day = "7",
doi = "10.1039/c2jm31901b",
language = "English",
volume = "22",
pages = "14667--14673",
journal = "Journal of Materials Chemistry",
issn = "0959-9428",
publisher = "The Royal Society of Chemistry",
number = "29",

}

TY - JOUR

T1 - Hot-injection synthesis of monodispersed Cu 2ZnSn(S xSe 1-x) 4 nanocrystals

T2 - Tunable composition and optical properties

AU - Ou, Keng Liang

AU - Fan, Jian Cin

AU - Chen, Jem Kun

AU - Huang, Chih Ching

AU - Chen, Liang Yih

AU - Ho, Jinn Hsuan

AU - Chang, Jia Yaw

PY - 2012/8/7

Y1 - 2012/8/7

N2 - In this study, we demonstrate that Cu 2ZnSn(S xSe 1-x) 4 nanocrystals with a tunable bandgap could be synthesized by a "hot-injection" protocol. In this protocol, metal stearates dissolved in oleylamine were injected into a hot solution of anion precursors in 1-octadecene (ODE) at a given reaction temperature. ODE, which is a low-cost, low-hazard, and air-stable liquid, was used as the solvent. Oleylamine was chosen as both the reagent to activate the precursors and as the capping agent for the nanocrystals. The composition of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals could be adjusted across the x range from 0 to 1 by varying the S/Se reactant ratio. The lattice parameters (a and c) measured from X-ray diffraction patterns decreased linearly with increasing Se content. This trend was consistent with Vegard's law, which confirmed the formation of homogeneous Cu 2ZnSn(S xSe 1-x) 4 nanocrystals. The A 1 symmetry modes of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals seen by Raman spectroscopy gradually shifted with decreasing x (S content) to the lower frequency side and completely disappeared when x = 0. The absorption spectra of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals revealed that the bandgaps of the nanocrystals could be adjusted over the range 1.0-1.5 eV by decreasing the S content. The relatively small value for the bowing parameter indicated that the synthesized Cu 2ZnSn(S xSe 1-x) 4 nanocrystals had good miscibility.

AB - In this study, we demonstrate that Cu 2ZnSn(S xSe 1-x) 4 nanocrystals with a tunable bandgap could be synthesized by a "hot-injection" protocol. In this protocol, metal stearates dissolved in oleylamine were injected into a hot solution of anion precursors in 1-octadecene (ODE) at a given reaction temperature. ODE, which is a low-cost, low-hazard, and air-stable liquid, was used as the solvent. Oleylamine was chosen as both the reagent to activate the precursors and as the capping agent for the nanocrystals. The composition of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals could be adjusted across the x range from 0 to 1 by varying the S/Se reactant ratio. The lattice parameters (a and c) measured from X-ray diffraction patterns decreased linearly with increasing Se content. This trend was consistent with Vegard's law, which confirmed the formation of homogeneous Cu 2ZnSn(S xSe 1-x) 4 nanocrystals. The A 1 symmetry modes of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals seen by Raman spectroscopy gradually shifted with decreasing x (S content) to the lower frequency side and completely disappeared when x = 0. The absorption spectra of the Cu 2ZnSn(S xSe 1-x) 4 nanocrystals revealed that the bandgaps of the nanocrystals could be adjusted over the range 1.0-1.5 eV by decreasing the S content. The relatively small value for the bowing parameter indicated that the synthesized Cu 2ZnSn(S xSe 1-x) 4 nanocrystals had good miscibility.

UR - http://www.scopus.com/inward/record.url?scp=84863705320&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863705320&partnerID=8YFLogxK

U2 - 10.1039/c2jm31901b

DO - 10.1039/c2jm31901b

M3 - Article

AN - SCOPUS:84863705320

VL - 22

SP - 14667

EP - 14673

JO - Journal of Materials Chemistry

JF - Journal of Materials Chemistry

SN - 0959-9428

IS - 29

ER -