Document Detail

Template-Free Synthesis of Hierarchical TiO2 Structures and Their Application in Dye-Sensitized Solar Cells.
MedLine Citation:
PMID:  21557615     Owner:  NLM     Status:  Publisher    
We demonstrate here to synthesize a hierarchical TiO2 architecture without any surfactants or templates. Two kinds of structure existed simultaneously, the ordered nanoarrays at bottom provided direct conduction pathways for photogenerated electrons while the upper micro-flowers consisted of nanobelt building units increased the light harvesting ability as the scattering part. The formation mechanism of the hierarchical architecture has been proposed by studying the morphology evolution processes upon reaction time. The performance of Dye-Sensitized Solar Cells based on the obtained anatase TiO2 has been also studied, giving a JSC=12.44 mA cm-2, VOC =0.64 V, FF =69.05%, and η=5.53%, which is superior than commerical TiO2 (P25). The UV-Vis results indicate that the obtained morphology is beneficial to light-scattering and thus increases the light harvesting ability. This hierarchical TiO2 structure offers great potential for the development of high-efficiency DSSCs.
Fang Shao; Jing Sun; Lian Gao; Songwang Yang; Jianqiang Luo
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-10
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8244     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-11     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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