Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals

Liang Li, Anshu Pandey, Jeffrey M. Pietryga, Victor I Klimov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Copper indium sulfide (CIS) is of great interest for application in thin-film photovoltaics due to its 1.5 eV band gap. In particular, nanocrystals of CIS have received increased attention of late because of their potential amenity towards low-cost fabrication methods. I will discuss an efficient, gram-scale synthesis of this material that uses the anion precursor also as both ligand and solvent, allowing for nearly complete consumption of the more expensive cationic precursors and minimizing waste. Time-resolved spectroscopic studies show that, despite emission quantum yields as high as 10%, the as-synthesized CIS NCs show non-exponential PL dynamics. After overcoating the CIS nanocrystals with higher band gap shell materials, however, quantum yield improve by an order of magnitude and the PL decay becomes almost purely exponential, which yields important insight into the emission mechanisms in this material. Finally, I will discuss the solution-based fabrication of solar cells based on CIS nanocrystals.

Original languageEnglish
Title of host publicationACS National Meeting Book of Abstracts
Publication statusPublished - 2011
Event242nd ACS National Meeting and Exposition - Denver, CO, United States
Duration: Aug 28 2011Sep 1 2011

Other

Other242nd ACS National Meeting and Exposition
CountryUnited States
CityDenver, CO
Period8/28/119/1/11

Fingerprint

Indium sulfide
Nanocrystals
Copper
Optical properties
Quantum yield
Energy gap
Fabrication
Anions
Solar cells
Negative ions
Ligands
Thin films
Costs

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Li, L., Pandey, A., Pietryga, J. M., & Klimov, V. I. (2011). Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals. In ACS National Meeting Book of Abstracts

Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals. / Li, Liang; Pandey, Anshu; Pietryga, Jeffrey M.; Klimov, Victor I.

ACS National Meeting Book of Abstracts. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Li, L, Pandey, A, Pietryga, JM & Klimov, VI 2011, Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals. in ACS National Meeting Book of Abstracts. 242nd ACS National Meeting and Exposition, Denver, CO, United States, 8/28/11.
Li L, Pandey A, Pietryga JM, Klimov VI. Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals. In ACS National Meeting Book of Abstracts. 2011
Li, Liang ; Pandey, Anshu ; Pietryga, Jeffrey M. ; Klimov, Victor I. / Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals. ACS National Meeting Book of Abstracts. 2011.
@inproceedings{8a90791ac26b426b963568812ac9bd01,
title = "Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals",
abstract = "Copper indium sulfide (CIS) is of great interest for application in thin-film photovoltaics due to its 1.5 eV band gap. In particular, nanocrystals of CIS have received increased attention of late because of their potential amenity towards low-cost fabrication methods. I will discuss an efficient, gram-scale synthesis of this material that uses the anion precursor also as both ligand and solvent, allowing for nearly complete consumption of the more expensive cationic precursors and minimizing waste. Time-resolved spectroscopic studies show that, despite emission quantum yields as high as 10{\%}, the as-synthesized CIS NCs show non-exponential PL dynamics. After overcoating the CIS nanocrystals with higher band gap shell materials, however, quantum yield improve by an order of magnitude and the PL decay becomes almost purely exponential, which yields important insight into the emission mechanisms in this material. Finally, I will discuss the solution-based fabrication of solar cells based on CIS nanocrystals.",
author = "Liang Li and Anshu Pandey and Pietryga, {Jeffrey M.} and Klimov, {Victor I}",
year = "2011",
language = "English",
booktitle = "ACS National Meeting Book of Abstracts",

}

TY - GEN

T1 - Synthesis and optical properties of highly luminescent CuInS2 based core/shell nanocrystals

AU - Li, Liang

AU - Pandey, Anshu

AU - Pietryga, Jeffrey M.

AU - Klimov, Victor I

PY - 2011

Y1 - 2011

N2 - Copper indium sulfide (CIS) is of great interest for application in thin-film photovoltaics due to its 1.5 eV band gap. In particular, nanocrystals of CIS have received increased attention of late because of their potential amenity towards low-cost fabrication methods. I will discuss an efficient, gram-scale synthesis of this material that uses the anion precursor also as both ligand and solvent, allowing for nearly complete consumption of the more expensive cationic precursors and minimizing waste. Time-resolved spectroscopic studies show that, despite emission quantum yields as high as 10%, the as-synthesized CIS NCs show non-exponential PL dynamics. After overcoating the CIS nanocrystals with higher band gap shell materials, however, quantum yield improve by an order of magnitude and the PL decay becomes almost purely exponential, which yields important insight into the emission mechanisms in this material. Finally, I will discuss the solution-based fabrication of solar cells based on CIS nanocrystals.

AB - Copper indium sulfide (CIS) is of great interest for application in thin-film photovoltaics due to its 1.5 eV band gap. In particular, nanocrystals of CIS have received increased attention of late because of their potential amenity towards low-cost fabrication methods. I will discuss an efficient, gram-scale synthesis of this material that uses the anion precursor also as both ligand and solvent, allowing for nearly complete consumption of the more expensive cationic precursors and minimizing waste. Time-resolved spectroscopic studies show that, despite emission quantum yields as high as 10%, the as-synthesized CIS NCs show non-exponential PL dynamics. After overcoating the CIS nanocrystals with higher band gap shell materials, however, quantum yield improve by an order of magnitude and the PL decay becomes almost purely exponential, which yields important insight into the emission mechanisms in this material. Finally, I will discuss the solution-based fabrication of solar cells based on CIS nanocrystals.

UR - http://www.scopus.com/inward/record.url?scp=84861042454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84861042454&partnerID=8YFLogxK

M3 - Conference contribution

BT - ACS National Meeting Book of Abstracts

ER -