发明名称 |
Reverse recovery using oxygen-vacancy defects |
摘要 |
A semiconductor device comprises a semiconductor substrate, a first electrode formed on a first main surface of the semiconductor substrate, and a second electrode formed on a second main surface of the semiconductor substrate. The semiconductor substrate includes a first region in which a density of oxygen-vacancy defects is greater than a density of vacancy cluster defects, and a second region in which the density of vacancy cluster defects is greater than the density of oxygen-vacancy defects. |
申请公布号 |
US8846544(B2) |
申请公布日期 |
2014.09.30 |
申请号 |
US201414193434 |
申请日期 |
2014.02.28 |
申请人 |
Toyota Jidosha Kabushiki Kaisha |
发明人 |
Misumi Tadashi;Iwasaki Shinya;Sugiyama Takahide |
分类号 |
H01L21/31;H01L21/469;H01L21/02 |
主分类号 |
H01L21/31 |
代理机构 |
Kenyon & Kenyon LLP |
代理人 |
Kenyon & Kenyon LLP |
主权项 |
1. A manufacturing method of a semiconductor device comprising a semiconductor substrate including a first region and a second region,
wherein a density of oxygen-vacancy defects is greater than a density of vacancy cluster defects in the first region, and the density of vacancy cluster defects is greater than the density of oxygen-vacancy defects in the second region, the method comprising: introducing oxygen into the semiconductor substrate; and irradiating charged particles to a predetermined depth in the semiconductor substrate, and wherein said introducing oxygen into the semiconductor substrate further comprising:
forming an oxide film on one of main surfaces of the semiconductor substrate;and annealing the semiconductor substrate in a state that the oxide film is present. |
地址 |
Toyota-Shi JP |