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The BOSCO solar cell – a both sides collecting and contacted structure
Author(s) -
Fertig Fabian,
Krauß Karin,
Greulich Johannes,
Clement Florian,
Biro Daniel,
Preu Ralf,
Rein Stefan
Publication year - 2014
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201409143
Subject(s) - wafer , solar cell , interconnection , materials science , optoelectronics , quantum efficiency , diffusion , block (permutation group theory) , silicon , silicon solar cell , work (physics) , crystalline silicon , engineering physics , computer science , physics , mechanical engineering , engineering , telecommunications , geometry , mathematics , thermodynamics
The BOSCO solar cell represents a bifacial structure with double‐sided collection. The structure allows the use of standard module interconnection technology and favours the use of material with low to medium diffusion length and low resistivity for maximum benefit towards other structures, such as Al‐BSF and PERC. Within this work, we present first results on different multicrystalline silicon materials yielding a monofacial efficiency of 17.4% on large‐area wafers from block‐cast mc‐Si. This value represents a gain of ∼0.7% abs compared to Al‐BSF cells processed in parallel. The applicability for bifacial operation is demonstrated by a significantly increased quantum efficiency for rear side illumination. These results make the BOSCO solar cell concept a promising candidate to further boost the output of utility‐scale PV plants even when using low‐cost wafers of low to medium diffusion length material.Sketch and photographs of the BOSCO solar cell concept. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)