Abstract
In this letter, we investigated the mechanism that forms thin silicon and germanium oxide films with a high-quality interface using a low-temperature neutral beam oxidation (NBO) process. Because NBO has high reactivity due to bombardment by energetic oxygen-neutral beams even at low substrate temperatures, we found that an extremely low activation energy for the atomic layer oxidation reaction could be achieved during the process itself. As a result, there was little suboxide at the interface between the oxide films and the semiconductor, and device characteristics with a high performance were observed.
Original language | English |
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Article number | 203111 |
Journal | Applied Physics Letters |
Volume | 98 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2011 May 16 |