USE OF CARBON CO-IMPLANTATION WITH MILLISECOND ANNEAL TO PRODUCE ULTRA-SHALLOW JUNCTIONS
Embodiments of the present invention include methods for forming an ultra-shallow junction in a substrate. In one embodiment, the method includes providing a silicon substrate, co-implanting the silicon substrate with carbon and a dopant to form a doped silicon substrate, and exposing the silicon su...
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Main Authors | , |
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Format | Patent |
Language | English French |
Published |
07.02.2008
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Subjects | |
Online Access | Get full text |
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Summary: | Embodiments of the present invention include methods for forming an ultra-shallow junction in a substrate. In one embodiment, the method includes providing a silicon substrate, co-implanting the silicon substrate with carbon and a dopant to form a doped silicon substrate, and exposing the silicon substrate to a short time thermal anneal. In certain embodiments, the silicon substrate is exposed to a rapid thermal anneal after co-implanting the silicon substrate but prior to exposing the silicon substrate to a short time thermal anneal. In certain embodiments, the pre-amorphization implant is performed on the silicon substrate prior to implanting the silicon substrate with carbon and a dopant. In certain embodiments, the silicon substrate is a monocrystalline silicon substrate.
L'invention porte dans ses différentes variantes sur des procédés de formation de jonctions très peu profondes dans des substrats. Dans une exécution, le procédé consiste à co-implanter dans un substrat de silicium du carbone et un dopant pour obtenir un substrat dopé au silicium, puis à exposer le substrat à un recuit de courte durée. Dans certaines exécutions, le substrat est exposé à un recuit ultra rapide après sa co-implantation, mais avant de l'exposer à un recuit de courte durée. Dans certaines exécutions, on effectue un implant de pré-amorphisation dans le substrat de silicium avant sa co-implantation de carbone et de dopant. Dans certaines exécutions, le substrat de silicium est monocristallin. |
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Bibliography: | Application Number: WO2007US74606 |