Towards scaling up of four terminal all perovskite tandem solar modules on flexible substrates
Mario Alejandro Mejía Escobar a, Rosinda Fuentes Pineda a, Vivek Babu a c, Pierpaolo Spinelli a, Konrad Wojciechowski a b
a Saule Technologies, Wroclaw 54-427, Poland
b Saule Research Institute, Wroclaw 54-427, Poland
c University of Rome (Tor Vergata), Via del Politecnico, 1, Roma, Italy
Proceedings of 13th Conference on Hybrid and Organic Photovoltaics (HOPV21)
Online, Spain, 2021 May 24th - 28th
Organizers: Marina Freitag, Feng Gao and Sam Stranks
Poster, Mario Alejandro Mejía Escobar, 176
Publication date: 11th May 2021

Metal halide perovskites constitute a very attractive class of materials for photovoltaic applications. Power conversion efficiencies of these devices exceeded 25% for a single junction architecture. Recently, multijunction all-perovskite solar cells also attracted a lot of attention, as they provide a way to further increase the efficiency values.

In this work, we demonstrate a scalable processing of perovskite photovoltaic devices, which can be combined into a four-terminal tandem PV architecture. For that reason, we optimized a blade-coating process of high- and low-bandgap perovskite thin films, and developed a robust lamination protocol. The laminated tandem minimodules (50 cm2 active area), fabricated on a flexible plastic foil, reach 15.3% of power conversion efficiency, and exhibit good stability at different aging conditions (indoor heat test and outdoor operational test).

The authors acknowledge funding from the National Centre for Research and Development (POIR.01.02.00-00-0309/16) and the European Union’s Horizon 2020 MSCA Innovative Training Network under Grant 764787.

© Fundació Scito
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