Rapid microwave synthesis of porous TiO2 spheres and their applications in dye-sensitized solar cells

Hong-En Wang, Ling-Xia Zheng, Chao-Ping Liu, Yan-Kuan Liu, Chun-Yan Luan, Hua Cheng, Yang Yang Li, Ludvik Martinu, Juan Antonio Zapien, Igor Bello

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

118 Citations (Scopus)

Abstract

Porous anatase TiO2 spheres with sizes ranging from 150 to 250 nm were synthesized by a rapid microwave treatment of spherical titanium glycolate precursors preformed via an ethylene glycol-mediated sol-gel process. The effects of various experimental conditions on the formation of titanium glycolate precursors and final TiO2 spheres were investigated. A dye-sensitized solar cell (DSSC) assembled with the as-synthesized porous TiO2 spheres as photoanodes exhibits a 5% energy conversion efficiency, which is almost 40% higher than that made of the standard commercial Degussa P25 TiO2 nanopowders. © 2011 American Chemical Society.
Original languageEnglish
Pages (from-to)10419-10425
JournalThe Journal of Physical Chemistry C
Volume115
Issue number21
DOIs
Publication statusPublished - 2 Jun 2011

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