Ordered mesoporous particles in titania films with hierarchical structure as scattering layers in dye-sensitized solar cells

Yuli Xiong, Daping He, Yun Jin, Petra J. Cameron, Karen J. Edler

Research output: Contribution to journalArticle

20 Citations (Scopus)
103 Downloads (Pure)

Abstract

This work aimed to understand the relationship between the physical properties of scattering particle layers in dye-sensitized solar cells (DSSCs) and their performance, to assist optimization of this component of the DSSC. Highly ordered anatase 2D-hexagonal mesoporous titania (meso-TiO2) nanoparticles with a high surface area and large pore size were fabricated. Meso-TiO2 was used as scattering particles and mixed with titania nanocrystallites at weight proportions ranging from 0 to 100%. Films made from the composites were used as scattering layers in DSSCs. The influence of meso-TiO2 proportion on the structure, morphology, and optical properties of the films were investigated. The results show that the films became more porous, with a larger surface roughness, and had higher surface areas and greater light-scattering effects when meso-TiO2 was incorporated. The performance of these scattering layers in relatively large, 1 cm2 area, DSSCs was studied to link cell performance to the detailed physical properties of the meso-TiO2/nanoparticle films. The optimum composition of scattering layers was obtained by mixing 50 wt % meso-TiO2 with titania nanoparticles.
Original languageEnglish
Pages (from-to)22552-22559
Number of pages8
JournalJournal of Physical Chemistry C
Volume119
Issue number39
Early online date8 Sep 2015
DOIs
Publication statusPublished - 1 Oct 2015

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