Electrophoretic deposition of Ga-Cu core-shell nanocomposites for CuGaS2 thin films

Yeon Soo Lee; Ji Hyun Cha; Byoung Koun Min; Duk Young Jung

doi:10.1016/j.solmat.2014.02.040

Electrophoretic deposition of Ga-Cu core-shell nanocomposites for CuGaS₂ thin films

Yeon Soo Lee, Ji Hyun Cha, Byoung Koun Min, Duk Young Jung

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

13 Citations (Scopus)

Abstract

This work reports on the syntheses of copper-gallium bimetallic nanoparticles by ultrasound-assisted chemical reduction method in alcohol solutions to prepare CuGaS₂ thin films. Gallium metal (Ga) in the form of pellet was dispersed in tetraethylene glycol by ultrasonic treatment. The chemical reduction of copper sulfate (CuSO₄) into copper metal by NaBH₄ at the surface of the Ga droplets enabled the formation of Ga-Cu core-shell structure. The Ga droplets with submicrometer size were homogenously coated with ~40-nm Cu nanoparticles. The exothermic transition of the Ga-Cu core-shell nanocomposite materials occurred at 485 °C, which corresponds to the crystalline phase formation of γ-Cu₉Ga ₄. Ga-Cu nanocomposites with a 1:1 ratio were deposited onto molybdenum substrate via electrophoretic deposition method as a precursor of CuGaS₂, a p-type semiconductor. Mechanical pressing and sulfurization provided dense CuGaS₂ thin films with good crystallinity and high phase purity.

Original language	English
Pages (from-to)	138-144
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	125
DOIs	https://doi.org/10.1016/j.solmat.2014.02.040
Publication status	Published - 2014 Jun

Bibliographical note

Funding Information:
This work was supported by the “National Agenda Project” program of Korea Research Council of Fundamental Science & Technology (KRCF) and by the Industrial Strategic Technology Development Program ( 10033436, KEIT ).

Keywords

CIGS
Chemical reductions
Core-shell
Photovoltaic cells
Precursor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2014.02.040

Cite this

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title = "Electrophoretic deposition of Ga-Cu core-shell nanocomposites for CuGaS2 thin films",

abstract = "This work reports on the syntheses of copper-gallium bimetallic nanoparticles by ultrasound-assisted chemical reduction method in alcohol solutions to prepare CuGaS2 thin films. Gallium metal (Ga) in the form of pellet was dispersed in tetraethylene glycol by ultrasonic treatment. The chemical reduction of copper sulfate (CuSO4) into copper metal by NaBH4 at the surface of the Ga droplets enabled the formation of Ga-Cu core-shell structure. The Ga droplets with submicrometer size were homogenously coated with ~40-nm Cu nanoparticles. The exothermic transition of the Ga-Cu core-shell nanocomposite materials occurred at 485 °C, which corresponds to the crystalline phase formation of γ-Cu9Ga 4. Ga-Cu nanocomposites with a 1:1 ratio were deposited onto molybdenum substrate via electrophoretic deposition method as a precursor of CuGaS2, a p-type semiconductor. Mechanical pressing and sulfurization provided dense CuGaS2 thin films with good crystallinity and high phase purity.",

keywords = "CIGS, Chemical reductions, Core-shell, Photovoltaic cells, Precursor",

author = "Lee, {Yeon Soo} and Cha, {Ji Hyun} and Min, {Byoung Koun} and Jung, {Duk Young}",

note = "Funding Information: This work was supported by the “National Agenda Project” program of Korea Research Council of Fundamental Science & Technology (KRCF) and by the Industrial Strategic Technology Development Program ( 10033436, KEIT ).",

year = "2014",

month = jun,

doi = "10.1016/j.solmat.2014.02.040",

language = "English",

volume = "125",

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journal = "Solar Energy Materials and Solar Cells",

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publisher = "Elsevier B.V.",

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T1 - Electrophoretic deposition of Ga-Cu core-shell nanocomposites for CuGaS2 thin films

AU - Lee, Yeon Soo

AU - Cha, Ji Hyun

AU - Min, Byoung Koun

AU - Jung, Duk Young

N1 - Funding Information: This work was supported by the “National Agenda Project” program of Korea Research Council of Fundamental Science & Technology (KRCF) and by the Industrial Strategic Technology Development Program ( 10033436, KEIT ).

PY - 2014/6

Y1 - 2014/6

N2 - This work reports on the syntheses of copper-gallium bimetallic nanoparticles by ultrasound-assisted chemical reduction method in alcohol solutions to prepare CuGaS2 thin films. Gallium metal (Ga) in the form of pellet was dispersed in tetraethylene glycol by ultrasonic treatment. The chemical reduction of copper sulfate (CuSO4) into copper metal by NaBH4 at the surface of the Ga droplets enabled the formation of Ga-Cu core-shell structure. The Ga droplets with submicrometer size were homogenously coated with ~40-nm Cu nanoparticles. The exothermic transition of the Ga-Cu core-shell nanocomposite materials occurred at 485 °C, which corresponds to the crystalline phase formation of γ-Cu9Ga 4. Ga-Cu nanocomposites with a 1:1 ratio were deposited onto molybdenum substrate via electrophoretic deposition method as a precursor of CuGaS2, a p-type semiconductor. Mechanical pressing and sulfurization provided dense CuGaS2 thin films with good crystallinity and high phase purity.

AB - This work reports on the syntheses of copper-gallium bimetallic nanoparticles by ultrasound-assisted chemical reduction method in alcohol solutions to prepare CuGaS2 thin films. Gallium metal (Ga) in the form of pellet was dispersed in tetraethylene glycol by ultrasonic treatment. The chemical reduction of copper sulfate (CuSO4) into copper metal by NaBH4 at the surface of the Ga droplets enabled the formation of Ga-Cu core-shell structure. The Ga droplets with submicrometer size were homogenously coated with ~40-nm Cu nanoparticles. The exothermic transition of the Ga-Cu core-shell nanocomposite materials occurred at 485 °C, which corresponds to the crystalline phase formation of γ-Cu9Ga 4. Ga-Cu nanocomposites with a 1:1 ratio were deposited onto molybdenum substrate via electrophoretic deposition method as a precursor of CuGaS2, a p-type semiconductor. Mechanical pressing and sulfurization provided dense CuGaS2 thin films with good crystallinity and high phase purity.

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KW - Chemical reductions

KW - Core-shell

KW - Photovoltaic cells

KW - Precursor

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