Enhancing performance of P3HT: TIO 2 solar cells using doped and surface modified TiO 2 nanorods

Yu Chieh Tu, Herman Lim, Chih Yu Chang, Jing Jong Shyue, Wei Fang Su

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Here we demonstrated an approach to increase performance of P3HT:TiO 2 solar cell either by electron deficient boron or electron rich bismuth doping into TiO 2 nanorods. The B doping increases the absorption, crystallinity and electron mobility of TiO 2 nanorods. The Bi-doped TiO 2 has higher J sc as compared with B-doped TiO 2 , mainly due to the improvement of electron density and increased absorption of TiO 2 nanorods. The devices were fabricated from TiO 2 nanorods being surface modified by organic dye W-4. The dye facilitates the bandgap alignment and compatibility between TiO 2 and P3HT. The power conversion efficiency of solar cell has been increased by 1.33 times and 1.30 times for Bi-doped TiO 2 and B-doped TiO 2 , respectively, as compared with that of as-synthesized TiO 2 . The results suggest the optical and electronic properties of TiO 2 can be tuned by various dopants to enhance the device performance.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalJournal of Colloid and Interface Science
Publication statusPublished - Jun 5 2015
Externally publishedYes


  • Doping
  • Nanorods
  • P3HT
  • Polymer
  • Solar cell
  • TiO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry


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