Two-Membrane-Pieces Sensitizing Technology and Cyanines Sensitized Nano-TiO₂ Materials

Abstract:

Two-membrane-pieces sensitizing method and the corresponding equipments were developed to prepare cyanines sensitized nanoTiO₂ photo anode materials. The cyanines were synthesized from N-p-carboxybenzyl-2,3,3-trimethyl-3H-indoleninium-5-sulfonate potassium and squaric acid or 2-chloro-1-formyl-3-(hydroxymethylene) cyclohex-1-ene. The maximum UV-Vis absorption wavelengths of them were 631 nm and 782 nm, respectively. The nanoTiO₂ thin films were prepared on ITO conductive glass from tetrabutyl titanate by sol-gel technique, and were sensitized with the dyes by two-membrane-pieces dye sensitizing method or immersion sensitizing method. Compared with traditional immersion sensitizing method, two-membrane-pieces sensitizing method was an environmentally friendly and economical process due to less dye consumption and less waste formed.

• Periodical: Advanced Materials Research (Volumes 785-786)
• Pages: 823-826
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.785-786.823
• Online since: September 2013
• Authors: Li Qiu Wang, Li Hui Zheng, Yang Liu, Shu Ping Sun, Peng Jun Wang, Xin Ting Wang, Yang Yang Hao, Tian Cheng He
• Keywords: Cyanine Dyes, Dye Sensitizing Method, Nano-TiO₂ Film, Photo Sensitizing Materials

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