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A New Junction Termination Using a Deep Trench Filled With BenzoCycloButene

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6 Author(s)
Théolier, L. ; CNRS, Univ. de Toulouse, Toulouse, France ; Mahfoz-Kotb, H. ; Isoird, K. ; Morancho, F.
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A new junction termination for high-voltage devices using a deep trench filled with dielectric, which dramatically decreases the junction-termination area, is proposed and fabricated. The termination breakdown voltage dependence on the dielectric critical electric field (E Cd) and its permittivity (??rd) is theoretically studied. Finally, the proposed junction termination is experimentally validated using BenzoCycloButene (BCB) as dielectric material. Experimental results show that the proposed termination sustains more than 1200 V with a 70-??m-width and 100- ??m-depth trench filled by BCB.

Published in:

Electron Device Letters, IEEE  (Volume:30 ,  Issue: 6 )