Monolithic Perovskite/Silicon-Heterojunction Tandem Solar Cells with Nanocrystalline Si/SiO x Tunnel Junction

Lucia V. Mercaldo, Eugenia Bobeico, Antonella De Maria, Marco Della Noce, Manuela Ferrara, Vera La Ferrara, Laura Lancellotti, Gabriella Rametta, Gennaro V. Sannino, Iurie Usatii and Paola Delli Veneri
Additional contact information
Lucia V. Mercaldo: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Eugenia Bobeico: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Antonella De Maria: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Marco Della Noce: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Manuela Ferrara: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Vera La Ferrara: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Laura Lancellotti: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Gabriella Rametta: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Gennaro V. Sannino: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Iurie Usatii: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy
Paola Delli Veneri: Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Portici Research Center, Piazzale E. Fermi, 80055 Portici, Italy

Energies, 2021, vol. 14, issue 22, 1-13

Abstract: Perovskite/silicon tandem solar cells have strong potential for high efficiency and low cost photovoltaics. In monolithic (two-terminal) configurations, one key element is the interconnection region of the two subcells, which should be designed for optimal light management and prevention of parasitic p/n junctions. We investigated monolithic perovskite/silicon-heterojunction (SHJ) tandem solar cells with a p/n nanocrystalline silicon/silicon-oxide recombination junction for improved infrared light management. This design can additionally provide for resilience to shunts and simplified cell processing. We probed modified SHJ solar cells, made from double-side polished n-type Si wafers, which included the proposed front-side p/n tunnel junction with the p-type film simultaneously functioning as selective charge transport layer for the SHJ bottom cell, trying different thicknesses for the n-type layer. Full tandem devices were then tested, by applying a planar n-i-p mixed-cation mixed-halide perovskite top cell, fabricated via low temperature solution methods to be compatible with the processed Si wafer. We demonstrate the feasibility of this tandem cell configuration over a 1 cm 2 area with negligible J-V hysteresis and a V OC ~1.8 V, matching the sum of the V OC -s contributed by the two components.

Keywords: monolithic perovskite/silicon tandem solar cells; triple cation perovskite; silicon heterojunction; tunnel recombination junction; doped nanocrystalline silicon oxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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