Optical semiconductor device including antiparallel semiconductor light-emitting element and Schottky diode element

摘要

An optical semiconductor device includes a semiconductor support substrate of a conductivity type having a first resistivity, a semiconductor layer of the conductivity type formed on the semiconductor support substrate and having a second resistivity higher than the first resistivity, a first power supply terminal having a first metal in Schottky barrier contact with the semiconductor layer along with the semiconductor support substrate, so that a Schottky diode element is constructed by the first power supply terminal and the semiconductor layer along with the semiconductor support substrate, a second power supply terminal having a second metal in ohmic contact with the semiconductor support substrate, and a semiconductor light-emitting element connected between the first and second power supply terminals, the semiconductor light-emitting element being antiparallel with the Schottky diode with respect to the first and second power supply terminals.

主权项

1. An optical semiconductor device comprising:
a semiconductor support substrate of a conductivity type, the semiconductor support substrate having a first resistivity; a semiconductor layer of said conductivity type, the semiconductor layer being formed on said semiconductor support substrate and having a second resistivity higher than said first resistivity; a first power supply terminal having a first metal in Schottky barrier contact with said semiconductor layer along with said semiconductor support substrate, so that a Schottky diode element is constructed by said first power supply terminal and said semiconductor layer along with said semiconductor support substrate; a second power supply terminal having a second metal in ohmic contact with said semiconductor support substrate; and a semiconductor light-emitting element connected between said first and second power supply terminals, wherein said semiconductor light-emitting element is antiparallel with said Schottky diode with respect to said first and second power supply terminals.