Solvent volume-driven CuInAlS2 nanoflake counter electrode for effective electrocatalytic tri-iodide reduction in dye-sensitized solar cells

C. Ravi Dhas, A. Jennifer Christy, R. Venkatesh, Subhendu K. Panda, B. Subramanian, K. Ravichandran, P. Sudhagar, A. Moses Ezhil Raj

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The influence of solvent volume on the properties of CuInAlS2 (CIAS) thin films deposited using simple and cost-effective nebulizer spray technique is studied. The polycrystalline CIAS thin films with tetragonal structure have been observed from the XRD results. SEM images show nanoflake-like structure on the film surface. The elemental presence and its chemical composition were examined by XPS and EDS. The deposited CIAS film for different solvent volume exhibited p-type semiconductor. Cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel polarization measurements demonstrated that CIAS counter electrodes are capable of tri-iodide reduction process. The performances of photocurrent density-voltage for the CIAS CE exhibited the maximum efficiency of 2.55% with the short-circuit current density of 7.22 mA cm−2. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)2485-2497
Number of pages13
JournalJournal of Solid State Electrochemistry
Volume22
Issue number8
Early online date20 Apr 2018
DOIs
Publication statusPublished - Aug 2018

Keywords

  • CIAS
  • Counter electrode
  • Dye-sensitized solar cells
  • Nebulizer spray
  • Thickness

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

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