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New Generation Silicon Solar Cells

5.6 OECO-cell (Obliquely Evaporated COntacts)

New Generation Silicon Solar Cells

Standard OECO cell:

front contacts are evaporated on the

 flanks of the ditch by self obscurance

flat homogeneous emitter because of one step phosphor diffusion

very thin contacts of metall are possible

development of a ultra thin tunnel oxid between metal and semiconductor, which forms high sufficient MIS contacts

passivation layer on the front and rear side (SiNX or SiO2)

efficiency ~ 20%

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