ISSN:
1434-6036
Keywords:
PACS. 73.30.+y Surface double layers, Schottky barriers, and work functions - 73.40.Ei Rectification
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: Unreconstructed interfaces may be prepared by evaporation of thick Pb films onto surfaces at room temperature. Current-voltage and capacitance-voltage characteristics of such Schottky contacts were measured in the temperature range between 140 and 300 K. The experimental data are analyzed by applying the thermionic-emission theory of inhomogeneous metal-semiconductor contacts as well as the “standard” thermionic-emission theory. From both methods the Schottky barrier height of laterally homogeneous contacts results as 0.724 eV. This value is by 74 meV larger than the previously observed barrier heights of laterally homogeneous interfaces. Similar differences were reported for unreconstructed and reconstructed Al- and contacts. The reduced barrier heights of all these interfaces are explained by the electric dipole associated with the stacking faults of reconstructions at surfaces and interfaces.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050634
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