Characteristics of Dye-Sensitized Solar Cells with TiO2 Stripes

Wen Feng Lai, Pei Ling Chao, Xin Yu Lin, Yin Pei Chen, Jih Hsin Liu, Tz Feng Lin, Wei Chou Hsu, Chia Yi Huang

Research output: Contribution to journalArticlepeer-review

Abstract

A TiO2 strip array with a thickness of 90 nm was fabricated by photolithography and physical vapor deposition. This work utilized the chemical and physical methods to fabricate the TiO2 strip array. A porous semiconductor layer made of TiO2 nanoparticles was coated on the TiO2 strip array. The TiO2 strip array has a one-dimensional protrusive structure. The energy conversion efficiency (4.38%) of a dye-sensitized solar cell (DSSC) with the TiO2 strip array exceeded that (3.20%) of a DSSC without a TiO2 strip array by 37%. In addition, this result was verified by the electrochemical impedance spectra of the two DSSCs. Therefore, the TiO2 strip array can be used to increase the energy conversion efficiencies of DSSCs. The large energy conversion efficiency of the DSSC with the TiO2 strip array arises from the large surface area of the one-dimensional protrusive structure and its specific electron transport paths. The DSSC with the TiO2 strip array has advantages of economical production cost, easy fabrication, and boosting energy conversion efficiency.

Original languageEnglish
Article number4212
JournalMaterials
Volume15
Issue number12
DOIs
Publication statusPublished - 2022 Jun 1

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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