| 摘要 |
PURPOSE:To provide a high luminous efficiency and high sensitivity of semiconductor optical device wherein a light emitting element and a light receiving element can be combined. CONSTITUTION:This element is equipped with a first conductivity type semiconductor substrate 1, where an electrode is made on one side, a second conductivity type semiconductor active layer 3, which is made on the other side of this semiconductor substrate 1, a tunnel layer 4, which is made on this semiconductor active layer 3, and a gate electrode 6, which is made on this tunnel layer 4. |
