Black silicon solar cells with interdigitated back-contacts achieve 22.1% efficiency. Back-contacted back-junction n-type silicon solar cells featuring an insulating thin film for decoupling charge carrier collection and metallization geometry. High-efficiency RISE-IBC solar cells: influence of rear side-passivation on pn-junction meander recombination. Development and integration of a high efficiency baseline leading to 23% IBC cells. Impact of carrier recombination on fill factor for large area heterojunction crystalline silicon solar cell with 25.1% efficiency. The irresistible charm of a simple current flow pattern - 25% with a solar cell featuring a full-area back contact. Commercial progress and challenges for photovoltaics. Crystalline silicon photovoltaics: a cost analysis framework for determining technology pathways to reach baseload electricity costs. International Energy Agency 2015 Snapshot of Global Photovoltaic Markets (International Energy Agency Photovoltaic Power System Programme (IEA PVPS), 2016) High-efficiency crystalline silicon solar cells: status and perspectives. JRC Science for Policy Report (Publications Office of the European Union, 2016).īattaglia, C., Cuevas, A.
Then, using only one alignment step for electrode definition, we fabricate a proof-of-concept 9-cm 2 tunnel-interdigitated back-contact solar cell with a certified conversion efficiency >22.5%. We exploit the surface-dependent growth of silicon thin films, deposited by plasma processes, to eliminate the patterning of one of the doped carrier-collecting layers. Here we show a contacting method that substantially simplifies the architecture and fabrication of back-contacted silicon solar cells. Recently, the world-record efficiency for crystalline-silicon single-junction solar cells was achieved by merging these two approaches in a single device however, the complexity of fabricating this class of devices raises concerns about their commercial potential. Conversely, maximal current generation requires the integration of the electron and hole contacts at the back of the solar cell to liberate its front from any shadowing loss. For crystalline-silicon solar cells, voltages close to the theoretical limit are nowadays readily achievable when using passivating contacts.
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