Effect of selenium content of CuInSexalloy nanopowder precursors on recrystallization of printed CuInSe2absorber layers during selenization heat treatment

Armin E. Zaghi, Marie Buffiere, Jaseok Koo, Guy Brammertz, Maria Batuk, Christophe Verbist, Joke Hadermann, Woo Kyoung Kim, Marc Meuris, Jef Poortmans, Jef Vleugels

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Polycrystalline CuInSe2semiconductors are efficient light absorber materials for thin film solar cell technology, whereas printing is one of the promising low cost and non-vacuum approaches for the fabrication of thin film solar cells. The printed precursors are transformed into a dense polycrystalline CuInSe2semiconductor film via thermal treatment in ambient selenium atmosphere (selenization). In this study, the effect of the selenium content in high purity mechanically synthesized CuInSex(x = 2, 1.5, 1 or 0.5) alloy precursors on the recrystallization of the CuInSe2phase during the selenization process was investigated. The nanostructure and phase variation of CuInSexnanopowders were investigated by different characterization techniques. The recrystallization process of the 1-2 μm thick CuInSexcoatings into the CuInSe2phase during selenization in selenium vapor was investigated via in-situ high temperature X-ray diffraction. The CuInSexprecursors with lower selenium content showed a more pronounced phase conversion into CuInSe2compared to the higher selenium content CuInSexprecursors. Moreover, the CuInSex(x = 0.5 and 1) precursor resulted in a denser polycrystalline CuInSe2semiconductor film with larger crystals. This could be attributed to a more intensive atomic interdiffusion within the CuInSexprecursor system compared to a CuInSe2phase precursor, and the formation of intermediate CuSe and CuSe2fluxing phases during selenization.

Original languageEnglish
Pages (from-to)11-17
Number of pages7
JournalThin Solid Films
Volume582
DOIs
Publication statusPublished - 1 May 2015
Externally publishedYes

Fingerprint

Selenium
selenium
heat treatment
Heat treatment
solar cells
low vacuum
absorbers (materials)
thin films
printing
Printing
Nanostructures
purity
Vapors
vapors
Fabrication
atmospheres
X ray diffraction
Crystals
fabrication
diffraction

Keywords

  • Copper
  • CuInSe
  • HR-TEM in-situ
  • HT-XRD
  • Indium
  • Nanopowder
  • Selenium alloy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Effect of selenium content of CuInSexalloy nanopowder precursors on recrystallization of printed CuInSe2absorber layers during selenization heat treatment. / Zaghi, Armin E.; Buffiere, Marie; Koo, Jaseok; Brammertz, Guy; Batuk, Maria; Verbist, Christophe; Hadermann, Joke; Kim, Woo Kyoung; Meuris, Marc; Poortmans, Jef; Vleugels, Jef.

In: Thin Solid Films, Vol. 582, 01.05.2015, p. 11-17.

Research output: Contribution to journalArticle

Zaghi, Armin E. ; Buffiere, Marie ; Koo, Jaseok ; Brammertz, Guy ; Batuk, Maria ; Verbist, Christophe ; Hadermann, Joke ; Kim, Woo Kyoung ; Meuris, Marc ; Poortmans, Jef ; Vleugels, Jef. / Effect of selenium content of CuInSexalloy nanopowder precursors on recrystallization of printed CuInSe2absorber layers during selenization heat treatment. In: Thin Solid Films. 2015 ; Vol. 582. pp. 11-17.
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abstract = "Polycrystalline CuInSe2semiconductors are efficient light absorber materials for thin film solar cell technology, whereas printing is one of the promising low cost and non-vacuum approaches for the fabrication of thin film solar cells. The printed precursors are transformed into a dense polycrystalline CuInSe2semiconductor film via thermal treatment in ambient selenium atmosphere (selenization). In this study, the effect of the selenium content in high purity mechanically synthesized CuInSex(x = 2, 1.5, 1 or 0.5) alloy precursors on the recrystallization of the CuInSe2phase during the selenization process was investigated. The nanostructure and phase variation of CuInSexnanopowders were investigated by different characterization techniques. The recrystallization process of the 1-2 μm thick CuInSexcoatings into the CuInSe2phase during selenization in selenium vapor was investigated via in-situ high temperature X-ray diffraction. The CuInSexprecursors with lower selenium content showed a more pronounced phase conversion into CuInSe2compared to the higher selenium content CuInSexprecursors. Moreover, the CuInSex(x = 0.5 and 1) precursor resulted in a denser polycrystalline CuInSe2semiconductor film with larger crystals. This could be attributed to a more intensive atomic interdiffusion within the CuInSexprecursor system compared to a CuInSe2phase precursor, and the formation of intermediate CuSe and CuSe2fluxing phases during selenization.",
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AU - Verbist, Christophe

AU - Hadermann, Joke

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AB - Polycrystalline CuInSe2semiconductors are efficient light absorber materials for thin film solar cell technology, whereas printing is one of the promising low cost and non-vacuum approaches for the fabrication of thin film solar cells. The printed precursors are transformed into a dense polycrystalline CuInSe2semiconductor film via thermal treatment in ambient selenium atmosphere (selenization). In this study, the effect of the selenium content in high purity mechanically synthesized CuInSex(x = 2, 1.5, 1 or 0.5) alloy precursors on the recrystallization of the CuInSe2phase during the selenization process was investigated. The nanostructure and phase variation of CuInSexnanopowders were investigated by different characterization techniques. The recrystallization process of the 1-2 μm thick CuInSexcoatings into the CuInSe2phase during selenization in selenium vapor was investigated via in-situ high temperature X-ray diffraction. The CuInSexprecursors with lower selenium content showed a more pronounced phase conversion into CuInSe2compared to the higher selenium content CuInSexprecursors. Moreover, the CuInSex(x = 0.5 and 1) precursor resulted in a denser polycrystalline CuInSe2semiconductor film with larger crystals. This could be attributed to a more intensive atomic interdiffusion within the CuInSexprecursor system compared to a CuInSe2phase precursor, and the formation of intermediate CuSe and CuSe2fluxing phases during selenization.

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