RT Journal Article
T1 Voids, nanochannels and formation of nanotubes with mobile Sn fillings in Sn doped ZnO nanorods
A1 Ortega Villafuerte, Yanicet
A1 Dieker, Ch
A1 Jaeger, W.
A1 Piqueras De Noriega, Francisco Javier
A1 Fernández Sánchez, Paloma
AB 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.
PB Iop Publishing Ltd
SN 0957-4484
YR 2010
FD 2010-06-04
LK https://hdl.handle.net/20.500.14352/44216
UL https://hdl.handle.net/20.500.14352/44216
LA eng
NO © 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.
NO MEC
NO Spanish Ministry of Science and Innovation
DS Docta Complutense
RD 12 abr 2025