Patent ID: 8912624

Claim:
A semiconductor substrate comprising: a single-crystal semiconductor film containing halogen; a first insulating film overlapped with the single-crystal semiconductor film, the first insulating film comprising silicon and oxygen as its composition and containing halogen; a second insulating film overlapped with the first insulating film, the second insulating film comprising silicon and nitrogen as its composition; a first bonding layer overlapped with the second insulating film, the first bonding layer having siloxane bonds; a barrier film overlapped with the first bonding layer, the barrier film comprising one selected from the group consisting of a stacked film of a silicon nitride film and a silicon oxide film, a stacked film of a silicon nitride film and a silicon oxynitride film, a stacked film of a silicon nitride oxide film and a silicon oxide film and a stacked film of a silicon nitride oxide film and a silicon oxynitride film; and a supporting substrate overlapped with the barrier film, wherein dangling bonds of the single-crystal semiconductor film at an interface between the single-crystal semiconductor film and the first insulating film are terminated by halogen diffused from the first insulating film.