| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical semiconductor element with high efficiency. <P>SOLUTION: An optical semiconductor element comprises: an n-type semiconductor layer; a p-type semiconductor layer; a functional portion provided between the n-type semiconductor layer and the p-type semiconductor layer. The functional portion includes a plurality of active layers laminated in a direction toward the p-type semiconductor layer from the n-type semiconductor layer. At least two of the plurality of active layers each include a multilayered laminate, an n-side barrier layer, a well layer, and a p-side barrier layer. The multilayered laminate includes a plurality of thick film layers and a plurality of thin film layers having a thickness less than that of the thick film layers, which are alternately laminated in the direction. The n-side barrier layer is provided between the multilayered laminate and the p-type semiconductor layer. The well layer is provided between the n-side barrier layer and the p-type semiconductor layer. The p-side barrier layer is provided between the well layer and the p-type semiconductor layer. <P>COPYRIGHT: (C)2012,JPO&INPIT |
