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Latent gel electrolyte precursors for quasi-solid dye sensitized solar cells: The comparison of nano-particle cross-linkers with polymer cross-linkers

Paper ID Volume ID Publish Year Pages File Format Full-Text
28731 44089 2006 7 PDF Available
Title
Latent gel electrolyte precursors for quasi-solid dye sensitized solar cells: The comparison of nano-particle cross-linkers with polymer cross-linkers
Abstract

New latent gel electrolyte precursors (Precursor 1) consisting of ionic liquids and latent gelators are reported. The gelators are composed of poly(vinylpyridine) (PVP) and di-carboxylic acids. Gelation is caused by the reaction between PVP and di-carboxylic acid. Precursor 1 is liquid and is injected into cells and porous TiO2 electrodes. Because of the latent properties, the viscosity of Precursor 1 does not increase at room temperature. After the Precursor 1 is injected into cells and into porous TiO2 layers, the cell is heated at 90 °C. Solidification occurs swiftly. The latent mechanism is discussed. The trend of photo-voltaic performance for the cell filled with Precursor 1 before and after gelation was compared with that for the cell filled with previously reported latent gel electrolyte Precursor 2 composed of nano-particles and di-carobxylic acids. Photo-voltaic performance for the former decreased after quasi-solidification, but the latter did not. This is explained by insufficient phase-separations of gelator backbone from ionic liquid electrolytes after solidification.

Keywords
Dye sensitized solar cells; Nano-particle; Electrolyte; Quasi-solid; Gel electrolytes; TiO2; Nano; Chemically cross-linked gel; Polyvinylpyridine; Silica: photo-conversion; Diffusion coefficient; Phase-separation; Phase-segregation
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Latent gel electrolyte precursors for quasi-solid dye sensitized solar cells: The comparison of nano-particle cross-linkers with polymer cross-linkers
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 179, Issues 1–2, 1 April 2006, Pages 42–48
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us