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Chemical Sintering of Nanoparticles: A Methodology for Low-Temperature Fabrication of Dye-Sensitized TiO2 Films
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- Authors
- Nam-Gyu Park, Kwang Man Kim, Man Gu Kang, Kwang Sun Ryu, Soon Ho Chang, Yu-Ju Shin
- Issue Date
- 2005-10
- Citation
- Advanced Materials, v.17, no.19, pp.2349-2353
- Language
- English
- Type
- Journal Article
- Project Code
- 05MB1500, Development of ionics device for operating next-generation PC, Ryu Kwang Sun
- Abstract
- The binder-free TiO2 pastes that have been developed using acid-base chemistry were reported. The TiO2 were found to exhibit viscosity as high as 5.3×104 cP, which enabled the formation of thick TiO2 films without requiring the thermal sintering effect. IPCE was measured as a function of wavelength from 400 to 800 nm using a specially designed IPCE system for dye-sensitized solar cells. It was observed that the high frequency semi-circles become featureless due to poor electrical contact between the particles in the TiO2 network.
- KSP Keywords
- Acid-base chemistry, Dye-sensitized solar cells(DSCs), High Frequency(HF), Low temperature(LT), Low temperature fabrication, Sensitized TiO2, Sintering effect, Thermal sintering, binder-free, chemical sintering, electrical contact