Semiconductor wafer, light emitting diode print head, image forming apparatus, and method of producing semiconductor device

摘要

A nitride semiconductor wafer includes a substrate; a nitride compound semiconductor layer formed on the substrate; and an Al_xGa_1-xAs layer (x>=0.6) formed between the substrate and the nitride semiconductor layer. The nitride compound semiconductor layer is formed of a nitride compound in a group III to a group V.