Nanotech 2003 Vol. 3
Nanotech 2003 Vol. 3
Technical Proceedings of the 2003 Nanotechnology Conference and Trade Show, Volume 3

Nano Devices and Systems Chapter 7

Mechanical and Semiconductor Properties of Nanophase Amorphic Diamond Coatings for High Power Electronics

Authors: F. Davanloo, C.B. Collins and F.J. Agee

Affilation: University of Texas at Dallas, United States

Pages: 350 - 353

Keywords: nanophase diamond, high power electronics, photoconductive switch

The mechanical and semiconductor properties of amorphic diamond can be employed to improve the high power photoconductive semiconductor switch longevity by coating the switch cathode or anode areas or both. In this work issues concerning the switch longevity were studied by fabrication and testing the GaAs photoconductive switches treated with the amorphic diamond under different switch configurations, gap settings and diamond coating thickness. The tunneling of electrons from amorphic diamond to GaAs during the off-state stage of operation provided pre-avalanche sites that diffused conduction current upon switch activation. A significant improvement in switch lifetime was demonstrated by testing the diamond-coated switch performance in a prototype pulser. Elementary processes involved in conduction of diamond treated switch and other design options such as coating of switch anode area are examined and discussed.

ISBN: 0-9728422-2-5
Pages: 560

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