Unexpected long-term instability of ZnO nanowires "protected" by a TiO2 shell

Yang Yang; Sik Kim Dong; Yong Qin; Andreas Berger; Roland Scholz; Hyunbin Kim; Mato Knez; Ulrich Gösele

doi:10.1021/ja906120a

Unexpected long-term instability of ZnO nanowires "protected" by a TiO₂ shell

Yang Yang, Sik Kim Dong, Yong Qin, Andreas Berger, Roland Scholz, Hyunbin Kim, Mato Knez, Ulrich Gösele

Max Planck Institute of Microstructure Physics

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

(Chemical Equation Presented) We revealed the aggravated instability of (0001)-oriented ZnO nanowires when they were deposited by a TiO₂ shell even under ambient conditions. Trace UV photons from daylight and moisture from air, which generally have negligible effects on "bare" ZnO nanowires, can obviously enhance their photocorrosion due to the high bandgap of TiO₂ as well as this conformal core-shell heterostructure.

Original language	English
Pages (from-to)	13920-13921
Number of pages	2
Journal	Journal of the American Chemical Society
Volume	131
Issue number	39
DOIs	https://doi.org/10.1021/ja906120a
State	Published - 7 Oct 2009
Externally published	Yes

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AU - Yang, Yang

AU - Dong, Sik Kim

AU - Qin, Yong

AU - Berger, Andreas

AU - Scholz, Roland

AU - Kim, Hyunbin

AU - Knez, Mato

AU - Gösele, Ulrich

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AB - (Chemical Equation Presented) We revealed the aggravated instability of (0001)-oriented ZnO nanowires when they were deposited by a TiO2 shell even under ambient conditions. Trace UV photons from daylight and moisture from air, which generally have negligible effects on "bare" ZnO nanowires, can obviously enhance their photocorrosion due to the high bandgap of TiO2 as well as this conformal core-shell heterostructure.

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Unexpected long-term instability of ZnO nanowires "protected" by a TiO₂ shell

Abstract

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