Opaque Pt counter electrodes for dye-sensitized solar cells

ATLI A., YILDIZ A.

International Journal of Energy Research, vol.46, no.5, pp.6543-6552, 2022 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 46 Issue: 5
  • Publication Date: 2022
  • Doi Number: 10.1002/er.7590
  • Journal Name: International Journal of Energy Research
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Environment Index, INSPEC, Metadex, Pollution Abstracts, Civil Engineering Abstracts
  • Page Numbers: pp.6543-6552
  • Keywords: counter electrode, dye sensitized solar cell, Pt
  • Ankara Yıldırım Beyazıt University Affiliated: Yes

Abstract

© 2022 John Wiley & Sons Ltd.An opaque platinum (Pt) film is deposited via the chemical bath method on an FTO substrate and assigned as a counter electrode (CE) of dye-sensitized solar cells (DSSCs). Optical properties opaque Pt film indicates the enhanced reflectivity compared to a conventional transparent Pt CE deposited by a spin coating method. The electrochemical impedance spectroscopy manifests the opaque Pt CE has a smaller series and charge-transfer resistances than that of transparent Pt. Tafel and cyclic voltammetry results verify the superiority of opaque Pt CE considering excellent electrocatalytic activity toward redox couple. A mechanical stability test affirms the excellent adhesion properties of the opaque Pt CE on FTO substrates. As a consequence, DSSC having the opaque Pt CE delivers a high electrical power conversion efficiency of 5.06%, outperforming the cell with the transparent Pt CE (4.31%) under the same conditions. Prospectively, the design of a device with an opaque Pt CE can be extended to other optoelectronic applications, opening up the opportunities for a host of high-performance devices.