Patent ID: 9157146
Filing Date: 2015-10-13
Classification: C23C,G02B

Abstract:
1. A method for depositing a silicon carbide thin film on a moving substrate while independently controlling sputtering of a plurality of targets made of different materials and plasma exposure in a vacuum state by using a film formation apparatus configured that a reaction process region and a plurality of film formation process regions are arranged spatially separated from one another in a single vacuum container and that processing in the respective regions can be controlled independently, comprising the steps of: after sputtering the plurality of targets sequentially in the respective film formation process regions in an inert gas atmosphere to form an interlayer thin film containing silicon and carbon on a substrate; exposing the interlayer thin film with plasma generated in an atmosphere of a mixed gas of an inert gas and hydrogen, wherein a hydrogen concentration is 3 to 20%, in the reaction process region to bring film conversion into an ultrathin film; and subsequently, repeating formation of another interlayer thin film on the ultrathin film and film conversion into another ultrathin film.