Effect of Au Grown on GaAs Substrate for Applying as Counter Electrode on Conversion Efficiency of Dye-Sensitized Solar Cells


GURBUZ O. , KIRSOY A., Kilicarslan F. , ERDEN İ. , BOZDOĞAN A., Firat Y.

ENERGY AND ENVIRONMENT FOCUS, vol.5, no.4, pp.268-273, 2016 (Journal Indexed in ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 5 Issue: 4
  • Publication Date: 2016
  • Doi Number: 10.1166/eef.2016.1224
  • Journal Name: ENERGY AND ENVIRONMENT FOCUS
  • Page Numbers: pp.268-273

Abstract

The symmetric Bis(4-fluorophenyl)-methoxy phthalocyanine (H2Pc) and its complexes (ZnPc and CoPc) were synthesized and studied photovoltaic properties of these compounds with the applicability of these synthesized compounds in dye-sensitized solar cells (DSSCs) as photosensitizers. Au thin film was grown on (100) oriented GaAs substrates by thermal evaporation technique for applying as counter electrode (CE) in DSSCs. The as-prepared Au/GaAs electrodes, assembled with this material as CE, were confirmed as substitution for platinum (Pt) counter electrode in DSSCs. The DSSC based on Au/GaAs thin films CE achieves power conversion efficiency (PCE) of 1.72%. The DSSC based on ZnPc exhibited significantly photovoltaic activities than metal free (H2Pc) and metal complexes (CoPc). Electrochemical impedance spectroscopy (EIS) demonstrated that the Au/GaAs as CE is effective for tri-iodide reduction. We presume that this study will open a way to fabricate DSSC devices with a CE based on Au/GaAs electrodes.