Publication:
Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2010-06-04
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Iop Publishing Ltd
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
ZnO nanorods containing different hollow structures have been grown by a thermal evaporation-deposition method with a mixture of ZnS and SnO(2) powders as precursor. Transmission electron microscopy shows rods with rows of voids as well as rods with empty channels along the growth axis. The presence of Sn nanoprecipitates associated with the empty regions indicates, in addition, that these are generated by diffusion processes during growth, probably due to an inhomogeneous distribution of Sn. The mechanism of forming voids and precipitates appears to be based on diffusion processes similar to the Kirkendall effect, which can lead to void formation at interfaces of bulk materials or in core-shell nanostructures. In some cases the nanorods are ZnO tubes partially filled with Sn that has been found to melt and expand by heating the nanotubes under the microscope electron beam. Such metal-semiconductor nanostructures have potential applications as thermal nanosensors or as electrical nanocomponents.
Description
© 2010 IOP Publishing Ltd. This work was supported by MEC (Project MAT2006-01259 and MAT2009-07882). Y Ortega thanks the Spanish Ministry of Science and Innovation for financial support through the ‘José Castillejo’ mobility grant program.
Unesco subjects
Keywords
Citation
[1] Wang R M, Xing Y J, Xu J and Yu D P 2003 New J. Phys. 55 115 [2] Mensah S L, Kayastha V K, Ivanov I N, Geohegan D and Yap Y K 2007 Appl. Phys. Lett. 90 103108 [3] Qiu Y and Yang S 2008 Nanotechnology 19 265606 [4] Yin Y, Rioux R M, Erdonmez C K, Hughes S, Somorjai G A and Alivisatos A P 2004 Science 304 711 [5] Fan H J, Knez M, Scholz R, Nielsch K, Pippel E, Hesse D, ZachariasM and G¨osele U 2006 Nat. Mater. 5 627 [6] Smigelskas A D and Kirkendall E O 1947 Trans. AIME 171 130 [7] Yang Y, Kim D S, Knez M, Scholz R, Berger A, Pippel E, Hesse D, G¨osele U and ZachariasM 2008 J. Phys. Chem. C 112 4068 [8] Peng H, Xie C, Schoen D T, Mcllwrath K, Zhang X F and Cui Y 2007 Nano Lett. 7 3734 [9] Ortega Y, Fern´andez P and Piqueras J 2009 J. Cryst. Growth 311 3231 [10] Grym J, Fernández P and Piqueras J 2005 Nanotechnology 16 931 [11] Ortega Y, Fernández P and Piqueras J 2007 Nanotechnology 18 115606 [12] Ortega Y, Fernández P and Piqueras J 2009 J. Appl. Phys. 105 054315 [13] Nogales E, Méndez B and Piqueras J 2005 Appl. Phys. Lett. 86 113112 [14] Magdas D A, Cremades A and Piqueras J 2006 Appl. Phys. Lett. 88 113107 [15] Alem´an B, Fernández P and Piqueras J 2009 Appl. Phys. Lett. 95 013111 [16] Gao Y and Bando Y 2002 Nature 415 599 [17] Tao X, Dong L, Zhang W, Zhang X, Cheng J, Huang H and Gan Y 2007 Carbon 47 3122 [18] Hu J, Li Q, Zhan J, Jiao Y, Liu Z, Ringer S P, Bando Y and Goldberg D 2008 Nano 2 107
Collections