3 years ago

Low temperature, solution-processed perovskite solar cells and modules with an aperture area efficiency of 11%

Low temperature, solution-processed perovskite solar cells and modules with an aperture area efficiency of 11%
Alessandro Lorenzo Palma, Fabio Matteocci, Chiara Battocchio, Thomas M. Brown, Babak Taheri, Aldo Di Carlo, Janardan Dagar, Igor Pis, Silvia Nappini, Luigi Vesce, Emanuele Calabrò, L. Carlini
Planar perovskite solar cells and modules were realized by using low temperature solution-process fabrication procedures. The photovoltaic performance was improved by optimizing a SnO2 electron transport layer and its interface with the perovskite layer. We achieved a power conversion efficiency (PCE) of 17.3% on small area cell (0.09 cm2) with negligible hysteresis and a steady-state PCE equal to 17.4%. Furthermore, shelf life tests showed a relative decrease of only 5% in PCE from its initial value after 1000 h of storage in dark conditions in air (RH 20%). Up-scaling of the technology was implemented entirely in air with fabrication of modules with a high aperture ratio of 91%. The modules delivered a maximum PCE of 13.1% obtained on an active area of 13.8 cm2 and of 11.9% on an aperture area of 15.2 cm2 representing state of art performance for fully low temperature solution processed planar perovskite solar modules.
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