Light-soaking tests of zinc oxide photoanodes sensitized with an indoline dye on different transparent conductive substrates

B. Onwona-Agyeman, A. Yaya, G. R.A. Kumara, M. Nakao

Research output: Contribution to journalArticlepeer-review

Abstract

Dye-sensitized solar cells (DSCs) were prepared using porous zinc oxide (ZnO) films on aluminum-doped zinc oxide (AZO) and fluorine-doped tin oxide (FTO) transparent conductive glass substrates. X-ray diffraction measurements revealed that, the porous ZnO films were crystallographically oriented differently on the two transparent substrates. The two DSCs were prepared using metal-free indoline dye as the sensitizer and a liquid electrolyte as the hole conductor. Measurements of the power conversion efficiency of the two DSCs over a period of time showed deterioration in the conversion efficiency of the DSCs with the deterioration being faster in ZnO/FTO than ZnO/AZO. The deterioration is attributed mainly to the decrease in light-harvesting ability of the sensitizer and recombination of photo-excited electrons resulting in the decrease in the short-circuit photocurrent densities and the open-circuit voltages in both DSCs during the light-soaking process.

Original languageEnglish
Pages (from-to)949-958
Number of pages10
JournalAIMS Energy
Volume6
Issue number6
DOIs
Publication statusPublished - 2018

Keywords

  • Crystallographic orientation
  • Photovoltaic
  • Semiconductor
  • Spray deposition
  • Thin film
  • Transparent conductor

Fingerprint

Dive into the research topics of 'Light-soaking tests of zinc oxide photoanodes sensitized with an indoline dye on different transparent conductive substrates'. Together they form a unique fingerprint.

Cite this