Abstract
We combine nuclear reaction analysis and electrical measurements to study the effect of water exposure (D2O) on the n-type 4H-SiC carbon face (000 1¯) MOS system and to compare to standard silicon based structures. We find that: (1) The bulk of the oxides on Si and SiC behave essentially the same with respect to deuterium accumulation; (2) there is a significant difference in accumulation of deuterium at the semiconductor/dielectric interface, the SiC C-face structure absorbs an order of magnitude more D than pure Si; (3) standard interface passivation schemes such as NO annealing greatly reduce the interfacial D accumulation; and (4) the effective interfacial charge after D2O exposure is proportional to the total D amount at the interface.
Original language | English |
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Article number | 191602 |
Journal | Applied Physics Letters |
Volume | 105 |
Issue number | 19 |
DOIs | |
Publication status | Published - Nov 10 2014 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)