Towards Ultra-High Efficient Photovoltaics With Perovskite/Crystalline Silicon Tandem Devices

  • Werner J
  • Moon S
  • Löper P
  • et al.
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Perovskite/crystalline silicon tandem solar cells are one of the most promising approaches to reach conversion efficiencies beyond 30% at reasonable costs. In the present paper, we present our research directions and recent results. This includes fundamental studies on the perovskite material properties such as sub-band gap absorption and complex refractive index, as well as the development of a broadband transparent rear electrode. The electrode development enabled the fabrication of semitransparent perovskite cells with efficiencies up to 14.7%, which then translates to four-terminal tandem measurements with total stabilized efficiency of up to 22.8%. Furthermore, we present first results on monolithic perovskite/silicon tandems with total current of 32.25 mA/cm2 on a flat wafer and finally provide optimization guidelines with optical simulations.




Werner, J., Moon, S.-J., Löper, P., Walter, A., Filipič, M., Weng, C.-H., … Ballif, C. (2015). Towards Ultra-High Efficient Photovoltaics With Perovskite/Crystalline Silicon Tandem Devices. 31st European PV Solar Energy Conference and Exhibition, (September), 6–11.

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