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Fabrication of Nanosheet/Nestlike Nanoarray Hierarchical TiO2 Film for Dye-Sensitized Solar Cell
Chang Meng-Lei1,2; Li Xin-Jun1
AbstractA hierarchical configuration of TiO2 nanoarray film, comprising a nestlike TiO2 nanoarray layer integrated with a nanosheet network overlayer, was constructed. The hierarchical TiO2 film was obtained by the post-hydrothermal treatment with NaOH solution on hydrothermally synthesized TiO2-derived nanostructured arrays grown on fluorine-doped tin oxide substrate (FTO). The TiO2 films were characterized by field-emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy, and absorbance spectroscopy. FE-SEM shows that the hierarchical TiO2 film with a thickness of 1.5 mu m is composed of a nanosheet overlayer (similar to 0.2 mu m height) and the nestlike nanoarray layer (similar to 1.3 mu m height). XRD patterns display that the TiO2 films have pure anatase phase structure. UV-Vis spectra reveal enhanced light scattering and dye adsorption ability of the hierarchical TiO2 film. For the dye-sensitized solar cell (DSSC) based on the nanosheet/nestlike nanoarray hierarchical TiO2 film, a short-circuit current (J(sc)) of 7.79, open-circuit voltage (V-oc) of 0.80 V, fill factor (FF) of 0.40, and photoelectric conversion efficiency (eta) of 2.48% are achieved. Within the dye-sensitized solar cell, the photoelectric conversion efficiency of the hierarchical TiO2 film was nearly ten times higher than that of nanostructured array film.
KeywordTio2 Nanosheet/nestlike Nanoarray Hydrothermal Synthesis Dye-sensitized Solar Cell Photoelectric Conversion
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedChemistry
Indexed BySCI
WOS SubjectChemistry, Physical
WOS IDWOS:000305035700011
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chang Meng-Lei,Li Xin-Jun. Fabrication of Nanosheet/Nestlike Nanoarray Hierarchical TiO2 Film for Dye-Sensitized Solar Cell[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(6):1368-1372.
APA Chang Meng-Lei,&Li Xin-Jun.(2012).Fabrication of Nanosheet/Nestlike Nanoarray Hierarchical TiO2 Film for Dye-Sensitized Solar Cell.ACTA PHYSICO-CHIMICA SINICA,28(6),1368-1372.
MLA Chang Meng-Lei,et al."Fabrication of Nanosheet/Nestlike Nanoarray Hierarchical TiO2 Film for Dye-Sensitized Solar Cell".ACTA PHYSICO-CHIMICA SINICA 28.6(2012):1368-1372.
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