Firing through porous silicon antireflection coating for silicon solar cells

The new idea to realize contacts through a porous silicon (PS) antireflecti on coating (ARC) is tested for the first time from the viewpoint of PS elig ibility towards a rapid high-temperature process. The morphological analysi s (TEM and SE) reveals that the thickness of PS after the thermal treatment is slightly increased accompanied by an increase of its porosity. As a res ult no significant changes in reflectance characteristics are observed. The refore it can be successfully used as an alternative way for preparation of PS ARC for silicon solar cells.