Perez-Garcia, Beatriz and Zuniga-Perez, Jesus and Munoz-Sanjose, Vicente and Colchero, Jaime and Palacios-Lidon, Elisa (2007) Formation and rupture of Schottky nanocontacts on ZnO nanocolumns. NANO LETTERS, 7 (6). pp. 1505-1511.
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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl070238m
In this paper, the electrical transport and mechanical properties of Pt/ZnO Schottky nanocontacts have been studied simultaneously during the formation and rupture of the nanocontacts. By combining multidimensional conducting scanning force spectroscopy with appropriated data processing, the physical relevant parameters (the ideality factor, the Schottky barrier height, and the rupture voltage) are obtained. It has been found that the transport curves strongly depend on the loading force. For loading forces higher than a threshold value, the transport characteristics are similar to those of large-area Schottky contact, while below this threshold deviations from strictly thermionic emission are detected. Above the threshold, stable and reproducible Pt/ZnO nanocontacts with ideality factors of about 2 and Schottky barrier heights of around 0.45 eV have been obtained.
|Uncontrolled Keywords:||Schottky - nanocontacts - zinc oxide - spectroscopy|
|Subjects:||Analytical Science > Microscopy and probe methods|
|Deposited On:||07 Sep 2009 13:56|
|Last Modified:||07 Sep 2009 13:56|
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