Surface-treated TiO2 nanoparticles for dye-sensitized solar cells with remarkably enhanced performance

Xukai Xin, Margaret Scheiner, Meidan Ye, Zhiqun Lin

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Dye-sensitized solar cells (DSSCs) were prepared by capitalizing on mesoporous P-25 TiO2 nanoparticle film sensitized with N719 dyes. Subjecting TiO2 nanoparticle films to TiCl4 treatment, the device performance was improved. More importantly, O2 plasma processing of TiO2 film that was not previously TiCl 4-treated resulted in a lower efficiency; by contrast, subsequent O2 plasma exposure after TiCl4 treatment markedly enhanced the power conversion efficiency, PCE, of DSSCs. Remarkably, with TiCl 4 and O2 plasma treatments dye-sensitized TiO2 nanoparticle solar cells produced with 21 μm thick TiO2 film illuminated under 100 mW/cm2 exhibited a PCE as high as 8.35%, twice of untreated cells of 3.86%.

Original languageEnglish
Pages (from-to)14594-14598
Number of pages5
JournalLangmuir
Volume27
Issue number23
DOIs
StatePublished - 6 Dec 2011

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