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Kinetically Controlled Fabrication of Single-Crystalline TiO2 Nanobrush Architectures with High Energy {001} Facets

Title
Kinetically Controlled Fabrication of Single-Crystalline TiO2 Nanobrush Architectures with High Energy {001} Facets
Authors
Fan, LishaGao, XiangLee, DongkyuGuo, Er-JiaLee, Shin BuhmSnijders, Paul CWard, Thomas Z.Eres, GyulaChisholm, MattheLee, Ho Nyung
DGIST Authors
Lee, Shin Buhm
Issue Date
2017-08
Citation
Advanced Science, 4(8)
Type
Article
Article Type
Article
Keywords
SENSITIZED SOLAR-CELLSPULSED-LASER DEPOSITIONONE-DIMENSIONAL NANOSTRUCTURESTRANSPARENT CONDUCTING OXIDEBALLISTIC AGGREGATIONGROWTHRUTILEFILMSPERFORMANCENANORODS
ISSN
2198-3844
Abstract
This study demonstrates that precise control of nonequilibrium growth conditions during pulsed laser deposition (PLD) can be exploited to produce single-crystalline anatase TiO2 nanobrush architectures with large surface areas terminated with high energy {001} facets. The data indicate that the key to nanobrush formation is controlling the atomic surface transport processes to balance defect aggregation and surface-smoothing processes. High-resolution scanning transmission electron microscopy data reveal that defect-mediated aggregation is the key to TiO2 nanobrush formation. The large concentration of defects present at the intersection of domain boundaries promotes aggregation of PLD growth species, resulting in the growth of the single-crystalline nanobrush architecture. This study proposes a model for the relationship between defect creation and growth mode in nonequilibrium environments, which enables application of this growth method to novel nanostructure design in a broad range of materials.
URI
http://hdl.handle.net/20.500.11750/6525
DOI
10.1002/advs.201700045
Publisher
Wiley-VCH Verlag
Related Researcher
  • Author Lee, Shinbuhm shinbuhmlee Lab
  • Research Interests Multifunctional films; Experimental condensed matter physics
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials Scienceshinbuhmlee Lab1. Journal Articles


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