High efficiency heterojunction solar cells based on quasi-mono-crystal silicon wafers

Heterojunction solar cells based on mono-like silicon wafers (n-type, 244,2 cm2) grown by directional solidification were made. Mono-crystal fraction with crystallographic orientation (100) was more than 95% of the surface of wafer. Solar cells were manufactured on the basis of industrial technology developed in R&D center TFTE for monocrystalline silicon wafers (Cz). Solar cell conversion efficiency on moonlike wafers reached 19,48%. For monocrystalline silicon wafer (Cz) produced as a reference sample in the same process conversion efficiency was 22,89%

Keywords: solar energy, solar module, thin- film technology, amorphous silicon, heterojunction solar cell


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