Hybrid poly (3-hexylthiophene)/titanium dioxide nanorods material for solar cell applications

Tsung Wei Zeng, Hsi Hsing Lo, Chia Hao Chang, Yun Yue Lin, Chun Wei Chen, Wei Fang Su

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

We conducted an extensive study on poly(3-hexylthiophene) (P3HT) in combination with titanium dioxide (TiO 2 ) nanorods hybrid material for polymer solar cell applications. The device performance critically depends on the morphology of the hybrid film that will be determined by the molecular weight of P3HT, the solvent type, the hybrid compositions, the surface ligand on the TiO 2 nanorods, film thickness, process conditions, and so on. The current-voltage characteristic of the device fabricated in air has shown a power conversion efficiency of 0.83% under air mass (AM) 1.5 illumination using high molecular weight (65,000 D) P3HT, high boiling point solvent trichlorobenzene, and pyridine-modified TiO 2 nanorods with a film thickness of about 100 nm. The Kelvin probe force microscopy (KPFM) study of hybrid films shows large-scale phase separation with domain size greater than 10 nm, which may be the main factor limiting device performance.

Original languageEnglish
Pages (from-to)952-957
Number of pages6
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number6-7
DOIs
Publication statusPublished - Jun 1 2009
Externally publishedYes

Keywords

  • Hybrid
  • Kelvin probe force microscopy
  • Nanorod
  • Poly(3-hexylthiophene)
  • Solar cell
  • Titanium dioxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films

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