Effect of thermal treatment on the characteristics of iridium Schottky barrier diodes on n-Ge (1 0 0)
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Date
Authors
Chawanda, Albert
Coelho, Sergio M.M.
Auret, Francois Danie
Mtangi, C.
Nyamhere, J.M.
Nel, Jacqueline Margot
Diale, M. (Mmantsae Moche)
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Iridium (Ir) Schottky barrier diodes were deposited on bulk grown (100) Sbdoped
n-type germanium by using the electron beam deposition system. Electrical
characterization of these contacts using current-voltage (I-V) and capacitance-voltage
(C-V) measurements was performed under various annealing conditions. The variation
of the electrical properties of these Schottky diodes can be attributed to combined
effects of interfacial reaction and phase transformation during the annealing process.
Thermal stability of the Ir/n-Ge (100) was observed up to annealing temperature of
500oC. Furthermore, structural characterization of these samples was performed by
using a scanning electron microscopy (SEM) at different annealing temperatures.
Results have also revealed that the onset temperature for agglomeration in a 20 nm
Ir/n-Ge (100) system occurs between 600-700oC.
Description
Keywords
Schottky contacts, Annealing conditions, Electron beam deposition system
Sustainable Development Goals
Citation
Chawanda, A, Coelho, SMM, Auret, FD, Mtangi, W, Nyamhere, C, Nel, JM & Daile, M 2012, 'Effect of thermal treatment on the characteristics of iridium Schottky barrier diodes on n-Ge (1 0 0)', Journal of Alloys and Compounds, vol. 513, no. 2, pp. 44-49.