| 摘要 |
<p>An optical semiconductor device with improved sensitivity is provided to improve sensitivity by producing an inexpensive light receiving element. An optical semiconductor device includes a first conductive type first semiconductor layer and a second conductive type channel layer formed on a surface of the first semiconductor layer in a light receiving region. The first semiconductor layer is formed as a p-n junction within the channel layer and the light receiving region. The optical semiconductor device further includes a second conductive type second semiconductor layer, and a light transmissible insulating film formed on the first semiconductor layer within the light receiving region. The channel region is formed on the surface region of the first semiconductor layer under the light transmissible insulating film when a reverse bias is applied between the first and second semiconductor layers.</p> |
