Structured silicon layer for e.g. silicon solar cell, has boundary surface with bent partial surfaces exhibiting nano-structure that is extended into layer upto depth between four hundred nanometer and five micrometer

摘要

The layer (1) has a boundary surface (2) including partial surfaces (3) that are bent relative to a main extending plane (4) of the layer. Width (b) of the bent partial surfaces is 5 micrometer in average. The width is projected in the main extending plane of the layer. The bent partial surfaces exhibit a nano-structure (5) that is extended into the layer upto depth between 400 nanometer and 5 micrometer. The bent partial surfaces form V-shaped structures, trapezoidal structures or pyramid-shaped structures.