Structure-intact Ti O2 nanoparticles for efficient electron transport in dye-sensitized solar cells

Kai Ping Wang, Hsisheng Teng

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Ti O2 anatase nanoparticles were synthesized from a titanate for application in dye-sensitized solar cells. Structural analysis with x-ray absorption fine structure spectroscopy showed that this titanate-derived Ti O2 had a low density of oxygen-vacancy defects that would serve as the trap sites to impede electron transport. The transit time of the photogenerated electrons, measured by intensity modulated photocurrent spectroscopy, was significantly shorter in the titanate-derived Ti O2 than in the conventional sol-gel-derived Ti O2. This structure-intact feature of the titanate-derived Ti O2 has led to a high photocurrent for dye-sensitized solar cells.

Original languageEnglish
Article number173102
JournalApplied Physics Letters
Volume91
Issue number17
DOIs
Publication statusPublished - 2007 Nov 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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