Semiconductor chip which emits electromagnetic radiation, and method for
fabricating it. To improve the light yield of semiconductor chips which
emit electromagnetic radiation, a textured reflection surface (131) is
integrated on the p-side of a semiconductor chip. The semiconductor chip
has an epitaxially produced semiconductor layer stack (1) based on GaN,
which comprises an n-conducting semiconductor layer (11), a p-conducting
semiconductor layer (13) and an electromagnetic radiation generating
region (12) which is arranged between these two semiconductor layers (11,
13). The surface of the p-conducting semiconductor layer (13) which faces
away from the radiation-generating region (12) is provided with
three-dimensional pyramid-like structures (15). A mirror layer (40) is
arranged over the whole of this textured surface. A textured reflection
surface (131) is formed between the mirror layer (40) and the
p-conducting semiconductor layer (13). The textured reflection surface
(131) can increase the amount of light which is decoupled at the
radiation-outcoupling surface (111) by virtue of the fact that a beam
(3), after double reflection on the reflection surface (131), is more
likely not to be totally reflected.