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Oriented Assembled TiO2Hierarchical NanowireArrays with Fast Electron Transport Properties.
- Source :
-
Nano Letters . Apr2014, Vol. 14 Issue 4, p1848-1852. 5p. - Publication Year :
- 2014
-
Abstract
- Developinghigh surface area nanostructured electrodes with rapidcharge transport is essential for artificial photosynthesis, solarcells, photocatalysis, and energy storage devices. Substantial researchefforts have been recently focused on building one-dimensional (1D)nanoblocks with fast charge transport into three-dimensional (3D)hierarchical architectures. However, except for the enlargement insurface area, there is little experimental evidence of fast electrontransport in these 3D nanostructure-based solar cells. In this communication,we report single-crystal-like 3D TiO2branched nanowirearrays consisting of 1D branch epitaxially grown from the primarytrunk. These 3D branched nanoarrays not only demonstrate 71% enlargementin large surface area (compared with 1D nanowire arrays) but alsoexhibit fast charge transport property (comparable to that in 1D singlecrystal nanoarrays), leading to 52% improvement in solar conversionefficiency. The orientated 3D assembly strategy reported here canbe extended to assemble other metal oxides with one or multiple componentsand thus represents a critical avenue toward high-performance optoelectronics. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15306984
- Volume :
- 14
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Nano Letters
- Publication Type :
- Academic Journal
- Accession number :
- 95475675
- Full Text :
- https://doi.org/10.1021/nl4046262