Enhanced photoelectrical performance of TiO2 electrodes integrated with microtube-network structures

Yong Zhao, Jin Zhai, Tianxin Wei, Lei Jiang, Daoben Zhu

Research output: Contribution to journalArticleResearchpeer-review

44 Citations (Scopus)

Abstract

Microtube-network structures were coupled into nanocrystalline TiO2 porous photoelectrodes, resulting in a 30% enhancement of the total photo-to-electrical conversion efficiency comparing to that of conventional electrodes of the same thickness. The textural material was formed by thermal removal of electrospun polymer nanofibers, which were encapsulated in a TiO2 nanoparticle matrix. Due to the microtube-network structure in the photoelectrodes, the optical path length within the porous film was considerably extended and the internal resistance of the devices was decreased, resulting in better light-collection efficiency, reduced charge recombination and fast ionic diffusion, and thus higher photoelectrical performance.

Original languageEnglish
Pages (from-to)5084-5089
Number of pages6
JournalJournal of Materials Chemistry
Volume17
Issue number48
DOIs
Publication statusPublished - 4 Dec 2007
Externally publishedYes

Cite this