Surface study of chemically modified TiO2 films for use in low temperature dye-sensitised solar cells

D. K. Mishra, Jyh-Ming Ting

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The photoelectrode films were prepared by commercially available TiO 2. No binder or surfactants were used in the paste making process. The TiO2 films were prepared by a glass rod similar to doctor blading where a scotch tape was used as a spacer. Thus formed films were treated at 140 °C for 2 h in air. Surface morphology and particle size distribution were carried out using SEM and TEM respectively. Surface studies of as grown films and after dye absorption were analysed using ATR-FTIR and XPS. Two types of dye anchoring were indicated by ATR analysis when different amount of acetic acid used for the paste preparation. The series resistance of the dye-sensitised solar cell was calculated from current-voltage plot in dark (e.g. LT-3 101.5 ω) and found very close to the value under illumination conditions (e.g. LT-3 115.8 ω). The solar cell parameters including the resistance of the cells were 1.23 mA, 3.3%, 88 ω (1.85 mM acetic acid) and 1.14 mA, 3.35%, 94.5 ω (8.5 mM acetic acid) for short circuit current, efficiency and resistance respectively.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalJournal of Alloys and Compounds
Volume561
DOIs
Publication statusPublished - 2013 Jun 5

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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