Patent ID: 6664575
Filing Date: 2003-12-16
Classification: H01L

Abstract:
A GaInP stacked layer structure comprising a GaAs single crystal substrate having stacked on the surface thereof at least a buffer layer, an electron channel layer composed of GaxIn1-xAs (0&lE;x&lE;1), a spacer layer composed of GazIn1-zP (0&lE;z&lE;1), and an electron supply layer composed of GayIn1-yP (0&lE;y&lE;1),wherein said electron channel layer has a compositional gradient region where the indium composition ratio (1-X) increases toward the electron supply layer side and said electron channel layer is composed of n-type GaxIn1-xAs (0&lE;x&lE;1) having added thereto boron.