Metallic alloy nanoparticle-based fabrication and optical properties of a Cu(In1-xGax)S2 absorber layer for solar cells

Yo Min Choi; Young In Lee; Seil Kim; Yong Ho Choa

doi:10.1016/j.jallcom.2014.06.174

Metallic alloy nanoparticle-based fabrication and optical properties of a Cu(In_1-xGa_x)S₂ absorber layer for solar cells

Yo Min Choi
, Young In Lee
, Seil Kim
, Yong Ho Choa

Dept. of Materials Science & Engineering

Hanyang University

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

14 Scopus citations

Abstract

A highly-densified Cu(In_1-xGa _x)S₂ (CIGS2) absorber layer was fabricated using copper, indium and gallium (CIG) metallic alloy nanoparticles synthesized by salt-assisted ultrasonic spray pyrolysis (SAUSP) followed by direct thermal reduction. The reduction process in salt matrix minimized aggregation of CIG metallic alloy nanoparticles that have the potential to lead to higher film densification during sulfurization. To optimize the amount of salt, various NaCl/precursor ratios were used for SAUSP and Cu-In metallic alloy nanoparticles with average particle size of 79 nm were obtained. The CIGS2 obtained in the present study exhibited a variable band-gap ranging from 1.46 to 2.4 eV depending on the Ga/(In + Ga) ratio, which corresponded to the respective bulk materials.

Original language	English
Pages (from-to)	496-500
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	615
DOIs	https://doi.org/10.1016/j.jallcom.2014.06.174
State	Published - 5 Dec 2014

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Metallic alloy nanoparticle
Salt matrix annealing
Salt-assisted ultrasonic pyrolysis

Access to Document

10.1016/j.jallcom.2014.06.174

Cite this

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title = "Metallic alloy nanoparticle-based fabrication and optical properties of a Cu(In1-xGax)S2 absorber layer for solar cells",

abstract = "A highly-densified Cu(In1-xGa x)S2 (CIGS2) absorber layer was fabricated using copper, indium and gallium (CIG) metallic alloy nanoparticles synthesized by salt-assisted ultrasonic spray pyrolysis (SAUSP) followed by direct thermal reduction. The reduction process in salt matrix minimized aggregation of CIG metallic alloy nanoparticles that have the potential to lead to higher film densification during sulfurization. To optimize the amount of salt, various NaCl/precursor ratios were used for SAUSP and Cu-In metallic alloy nanoparticles with average particle size of 79 nm were obtained. The CIGS2 obtained in the present study exhibited a variable band-gap ranging from 1.46 to 2.4 eV depending on the Ga/(In + Ga) ratio, which corresponded to the respective bulk materials.",

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author = "Choi, \{Yo Min\} and Lee, \{Young In\} and Seil Kim and Choa, \{Yong Ho\}",

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T1 - Metallic alloy nanoparticle-based fabrication and optical properties of a Cu(In1-xGax)S2 absorber layer for solar cells

AU - Choi, Yo Min

AU - Lee, Young In

AU - Kim, Seil

AU - Choa, Yong Ho

PY - 2014/12/5

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N2 - A highly-densified Cu(In1-xGa x)S2 (CIGS2) absorber layer was fabricated using copper, indium and gallium (CIG) metallic alloy nanoparticles synthesized by salt-assisted ultrasonic spray pyrolysis (SAUSP) followed by direct thermal reduction. The reduction process in salt matrix minimized aggregation of CIG metallic alloy nanoparticles that have the potential to lead to higher film densification during sulfurization. To optimize the amount of salt, various NaCl/precursor ratios were used for SAUSP and Cu-In metallic alloy nanoparticles with average particle size of 79 nm were obtained. The CIGS2 obtained in the present study exhibited a variable band-gap ranging from 1.46 to 2.4 eV depending on the Ga/(In + Ga) ratio, which corresponded to the respective bulk materials.

AB - A highly-densified Cu(In1-xGa x)S2 (CIGS2) absorber layer was fabricated using copper, indium and gallium (CIG) metallic alloy nanoparticles synthesized by salt-assisted ultrasonic spray pyrolysis (SAUSP) followed by direct thermal reduction. The reduction process in salt matrix minimized aggregation of CIG metallic alloy nanoparticles that have the potential to lead to higher film densification during sulfurization. To optimize the amount of salt, various NaCl/precursor ratios were used for SAUSP and Cu-In metallic alloy nanoparticles with average particle size of 79 nm were obtained. The CIGS2 obtained in the present study exhibited a variable band-gap ranging from 1.46 to 2.4 eV depending on the Ga/(In + Ga) ratio, which corresponded to the respective bulk materials.

KW - Metallic alloy nanoparticle

KW - Salt matrix annealing

KW - Salt-assisted ultrasonic pyrolysis

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