Patent ID: 9653621
Date: 2017-05-16
CPC Classifications: B82Y,H01L

Claim:
1. A semiconductor apparatus comprising: a layered structure in which at least one narrow-bandgap layer formed from a material that has a narrower bandgap than the material of a layer adjacent to the narrow-bandgap layer in a first direction or a direction opposite to the first direction and at least one wide-bandgap layer formed from a material that has a wider bandgap than the material of a layer adjacent to the wide-bandgap layer in the first direction or the direction opposite to the first direction are alternately layered, the layered structure including at least one double junction structure that has a first junction at which the wide-bandgap layer and the narrow-bandgap layer are layered and joined to each other in that order in the first direction and a second junction at which the narrow-bandgap layer and the wide-bandgap layer are layered and joined to each other in that order in the first direction, and each of the at least one double junction structure contains at least one pair of a first region that has negative fixed charge and a second region that has positive fixed charge; a first electrode semiconductor layer which extends in a second direction that intersects with the first direction and which is joined to each narrow-bandgap layer of the layered structure and each wide-bandgap layer of the layered structure, wherein the first electrode semiconductor layer is formed by doping a first electroconductive type impurity into each narrow-bandgap layer of the layered structure and each wide-bandgap layer of the layered structure; and a second electrode semiconductor layer which extends in a third direction that intersects with the first direction and which is joined to each narrow-bandgap layer of the layered structure and each wide-bandgap layer of the layered structure, wherein the second electrode semiconductor layer is formed by doping a second electroconductive type impurity into each narrow-bandgap layer of the layered structure and each wide-bandgap layer of the layered structure.