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New techniques for the study of Gunn diode contacts

Gurney, William and Orton, J.W. (1974) New techniques for the study of Gunn diode contacts. Solid State Electronics, 17 (7). pp. 743-750. ISSN 0038-1101

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Abstract

Measurements are reported which provide direct evidence of the relationship between the frequency-temperature behaviour of GaAs and InP Gunn diodes and the quality of their cathode contacts. The technique used consists of damaging the cathode contact in a controlled manner while monitoring the current-voltage characteristic and df/dT. These results are compared with computer simulations of I-V characteristics and RF performance using a model diode with a region of either reduced carrier concentration or reduced mobility immediately beneath the contact. Qualitative agreement is obtained between theory and experiment. Magnetoresistance measurements on diodes both before and after damage are analysed to show that the damaged contact region contains both reduced carrier concentration and reduced mobility. Computer simulation using an appropriate model predicts I-V characteristics in general agreement with experimental observations.

Item type: Article
ID code: 41447
Keywords: measurements, Gunn diodes , Probabilities. Mathematical statistics, Materials Chemistry, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Condensed Matter Physics
Subjects: Science > Mathematics > Probabilities. Mathematical statistics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 15 Oct 2012 12:59
    Last modified: 05 Sep 2014 18:03
    URI: http://strathprints.strath.ac.uk/id/eprint/41447

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