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Influence of porous silicon on parameters of silicon solar cells

Lipiński M., Panek P., Bielańska E., Węgłowska J., Czternastek H.

Opto-Electronics Review

2000

Vol. 8, No. 4

418-420

The silicon solar cells with PS /n+/ p-Si structure (PS - porous Si) have been realised. Porous silicon obtained by stain etching or by electrochemical etching on standard alkaline textured surface has reduced effective reflectance coefficient to about 3% in a wavelength range of 400-1000 nm. Improved performance of solar cells due to formation of PS layer on the top surface between grid fingers has been demonstrated. Increases in efficiency of more than 25% have been achieved. In one chemical process antireflection coating as well as the selective emitter could be simultaneously obtained.