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Monolithic Perovskite/Silicon-Heterojunction Tandem Solar Cells with Nanocrystalline $Si/SiO_{x}$ Tunnel Junction
| Content Provider | MDPI |
|---|---|
| Author | Mercaldo, Lucia V. Bobeico, Eugenia Maria, Antonella De Noce, Marco Della Ferrara, Manuela Ferrara, Vera La Lancellotti, Laura Rametta, Gabriella Sannino, Gennaro V. Usatii, Iurie Veneri, Paola Delli |
| Copyright Year | 2021 |
| Description | 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. |
| Starting Page | 7684 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14227684 |
| Journal | Energies |
| Issue Number | 22 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-11-17 |
| Access Restriction | Open |
| Subject Keyword | Energies Monolithic Perovskite/silicon Tandem Solar Cells Triple Cation Perovskite Silicon Heterojunction Tunnel Recombination Junction Doped Nanocrystalline Silicon Oxide |
| Content Type | Text |
| Resource Type | Article |
