Patent ID: 6829271
Filing Date: 2004-12-07
Classification: B82Y,H01S

Abstract:
An electronic apparatus having a light-emitting semiconductor device, said light-emitting semiconductor device comprising:a semiconductor substrate; an active layer provided above said semiconductor substrate, said active layer producing a red optical radiation; and a cladding layer provided above said semiconductor substrate adjacent to said active layer, said active layer comprising a III-V material in a system of AlGaInPAs having a composition represented as (AlxGa1-x) &agr;In1-&agr;PtAs1-t(0&lE;x<1, 0said cladding layer containing Al and comprising a III-V material in a system of AlGaInPAs having a composition represented as (AlyGa1-y)&bgr;In1-&bgr;PvAs1-v (0said cladding layer having a bandgap larger than a bandgap of said active layer and a lattice constant intermediate between a lattice constant of GaP and a lattice constant of GaAs, said cladding layer having said lattice constant and a thickness set outside a range in which said cladding layer can grow on any of a GaP crystal and a GaAs crystal without forming a misfit dislocation.