Effect of sodium on photovoltaic properties of dye-sensitized solar cells assembled with anatase TiO2 nanosheets with exposed {001} facets

Xia Wu; Gaoqing Max Lu; Lianzhou Wang

doi:10.1016/j.jcis.2012.10.007

Effect of sodium on photovoltaic properties of dye-sensitized solar cells assembled with anatase TiO2 nanosheets with exposed {001} facets

J Colloid Interface Sci. 2013 Feb 1:391:70-3. doi: 10.1016/j.jcis.2012.10.007. Epub 2012 Oct 13.

Authors

Xia Wu¹, Gaoqing Max Lu, Lianzhou Wang

Affiliation

¹ ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia.

PMID: 23123028
DOI: 10.1016/j.jcis.2012.10.007

Abstract

Anatase TiO(2) nanosheets with exposed reactive {001} facets were prepared in the presence of HF. The photovoltaic properties of NaOH-washed anatase TiO(2) nanosheets with exposed {001} facets were investigated by assembling the TiO(2) as photoanodes in dye-sensitized solar cells (DSSCs). A decreased overall efficiency and increased recombination rate was observed in comparison with the H(2)O-washed counterpart by both dark current scan and open-circuit voltage decay scan, and XPS confirmed that the deleterious effect of sodium ions is responsible for this reduced efficiency in DSSCs.