Dye-sensitized solar cells using laser processing techniques

H. Kim, A. Piqué, G. P. Kushto, R. C.Y. Auyeung, S. H. Lee, Craig B. Arnold, Z. H. Kafafi

Research output: Contribution to journalConference article

8 Scopus citations

Abstract

Laser processing techniques, such as laser direct-write (LDW) and laser sintering, have been used to deposit mesoporous nanocrystalline TiO2 (nc-TiO2) films for use in dye-sensitized solar cells. LDW enables the fabrication of conformal structures containing metals, ceramics, polymers and composites on rigid and flexible substrates without the use of masks or additional patterning techniques. The transferred material maintains a porous, high surface area structure that is ideally suited for dye-sensitized solar cells. In this experiment, a pulsed UV laser (355nm) is used to forward transfer a paste of commercial TiO2 nanopowder (P25) onto transparent conducting electrodes on flexible polyethyleneterephthalate (PET) and rigid glass substrates. For the cells based on flexible PET substrates, the transferred TiO2 layers were sintered using an in-situ laser to improve electron paths without damaging PET substrates. In this paper, we demonstrate the use of laser processing techniques to produce nc-TiO2 films (-10 μn thickness) on glass for use in dye-sensitized solar cells (Voc = 690 mV, Jsc = 8.7 mA/cm2, ff= 0.67, η = 4.0% at 100 mW/cm2).

Original languageEnglish (US)
Pages (from-to)348-356
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5339
DOIs
StatePublished - 2004
EventPhoton Processing in Microelectronics and Photonics III - San Jose, CA, United States
Duration: Jan 26 2004Jan 29 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Dye-sensitized solar cells
  • Laser annealing
  • Laser direct-write
  • Laser forward transfer
  • Nanocrystalline tio

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