Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

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

Full text not available in this repository. (Request a copy from the Strathclyde author)

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.