Synthesis of solution-processed Cu<inf>2</inf>ZnSnSe<inf>4</inf> thin films on transparent conducting oxide glass substrates

Agus Ismail, Jin Woo Cho, Se Jin Park, Yun Jeong Hwang, Byoung Koun Min

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3 Citations (Scopus)

Abstract

Cu<inf>2</inf>ZnSnSe<inf>4</inf> (CZTSe) thin films were synthesized on transparent conducting oxide glass substrates via a simple, non-toxic, and low-cost process using a precursor solution paste. A three-step heating process (oxidation, sulfurization, and selenization) was employed to synthesize a CZTSe thin film as an absorber layer for use in thin-film solar cells. In particular, we focused on the effects of sulfurization conditions on CZTSe film formation. We found that sulfurization at 400 °C involves the formation of secondary phases such as CuSe2 and Cu<inf>2</inf>SnSe3, but they gradually disappeared when the temperature was increased. The formed CZTSe thin films showed homogenous and good crystallinity with grain sizes of approximately 600 nm. A solar cell device was tentatively fabricated and showed a power conversion efficiency of 2.2% on an active area of 0.44 cm<sup>2</sup> with an open circuit voltage of 365 mV, a short current density of 20.6 mA/cm<sup>2</sup>, and a fill factor of 28.7%.

Original languageEnglish
Pages (from-to)1985-1988
Number of pages4
JournalBulletin of the Korean Chemical Society
Volume35
Issue number7
DOIs
Publication statusPublished - 2014 Jul 20

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Keywords

  • CZTSe
  • Solar Cells
  • Solution processes
  • Transparent conducting oxide glass

ASJC Scopus subject areas

  • Chemistry(all)

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