Abstract
Experimental investigations show that the 1/f noise intensityC and the contact resistanceR can be used to analyse contacts. The simply prepared contacts are fritted by discharging a capacitor, resulting in a multi-spot contact. A model relatesC andR to a number of contact spotsk with radiusa. More impulse-frittings at increasing energies decreaseC andR, thus enhancing the values ofk anda. From experimentalC vsR plots two regions are determined for GaAs: A fritting (a=constant) and A+B fritting (a∝k). Calculated values ofk are in good agreement with the number of peaks or pits formed by etching the semiconductor surface. From experimentalC vsW orR vsW curves, withW the cumulative impulse-fritting energy, the conclusion can be made thatka 3 is proportional toW.
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L.K.J.Vandamme, R. Tijburg: To be published
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Ortmans, L.H.F., Vandamme, L.K.J. Characterization of impulse-fritting procedures of contacts by measuring 1/f noise. Appl. Phys. 9, 147–151 (1976). https://doi.org/10.1007/BF00903951
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DOI: https://doi.org/10.1007/BF00903951