Open-circuit voltage improvement by using TiO2 nanotubes as a working electrode of dye-sensitized solar cell

X. D. Li, D. W. Zhang, Z. Sun, Y. W. Chen, S. M. Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The titanium dioxide nanotubes (TiNTs) were directly fabricated from commercial P25 TiO2 via alkali hydrothermal transformation. The optimized synthesis, thermal and hydrothermal stability, and consequent optical properties of the titanate nanotubes were systematically studied. The TiO 2 nanotubes were characterized by transmission electron microscopy. Dye-sensitized solar cells (DSSCs) were constructed with films made of grown TiO2 nanotubes as working electrodes. The nanocrystalline TiO 2 pastes were prepared with PEG (Mw 20000) and as made TiO 2 nanotubes. The titania thin films were grown by screen printing method in order to efficiently control the DSSC fabrication process. The microstructures of nanoporous films in solar cells were characterized by scanning electron microscope (SEM) and Brunauer Emmett Teller (BET) analysis. A metal-free organic dye (referred to as D102 dye) was used as a sensitizer. A high conversion efficiency of light-to-electricity of around 6% under illumination of simulated AM1.5 sunlight (65mW/cm2) was achieved with the TiO2 nanotube cell. Compared with the case of DSSCs with TiO2 nanoparticles, the open-circuit voltage and fill factor of DSSCs with TiO2 nanotubes increased significantly. The related mechanisms are discussed.

Original languageEnglish
Title of host publication2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
Pages746-750
Number of pages5
DOIs
StatePublished - 2008
Event2008 2nd IEEE International Nanoelectronics Conference, INEC 2008 - Shanghai, China
Duration: 24 Mar 200827 Mar 2008

Publication series

Name2008 2nd IEEE International Nanoelectronics Conference, INEC 2008

Conference

Conference2008 2nd IEEE International Nanoelectronics Conference, INEC 2008
Country/TerritoryChina
CityShanghai
Period24/03/0827/03/08

Keywords

  • Dye-sensitized solar cells
  • Fill factor
  • Open-circuit voltage
  • Titanium dioxide nanotubes

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