Patent ID: 6265745
Filing Date: 2001-07-24
Classification: H01L

Abstract:
An insulated gate semiconductor device comprising:a semiconductor island formed over a substrate to include an impurity region and a channel forming region, said semiconductor island being constructed in a single-crystalline region or region equivalent to the single-crystalline region;a gate electrode formed over said substrate adjacent to said channel forming region, said gate electrode having at least a portion which overlaps with said impurity region; anda gate insulating film formed over said substrate between said gate electrode and said channel forming region,wherein said single-crystalline region or region equivalent to the single-crystalline region contains substantially no grain boundary therein, contains hydrogen and/or halogen atoms at a density of 1.times.10.sup.15 to 1.times.10.sup.20 atoms cm.sup.-3 therein, also contains carbon and nitrogen atoms at a density of 1.times.10.sup.16 to 5.times.10.sup.18 atoms cm.sup.-3 and further contains oxygen atoms at a density of 1.times.10.sup.17 to 5.times.10.sup.19 atoms cm.sup.-3.