| Literature DB >> 33303611 |
Amran Al-Ashouri1, Eike Köhnen1, Bor Li1, Artiom Magomedov2, Hannes Hempel3, Pietro Caprioglio1,4, José A Márquez3, Anna Belen Morales Vilches5, Ernestas Kasparavicius2, Joel A Smith6,7, Nga Phung6, Dorothee Menzel1, Max Grischek1,4, Lukas Kegelmann1, Dieter Skroblin8, Christian Gollwitzer8, Tadas Malinauskas2, Marko Jošt1,9, Gašper Matič9, Bernd Rech10,11, Rutger Schlatmann5,12, Marko Topič9, Lars Korte1, Antonio Abate6, Bernd Stannowski5,13, Dieter Neher4, Martin Stolterfoht4, Thomas Unold3, Vytautas Getautis2, Steve Albrecht14,11.
Abstract
Tandem solar cells that pair silicon with a metal halide perovskite are a promising option for surpassing the single-cell efficiency limit. We report a monolithic perovskite/silicon tandem with a certified power conversion efficiency of 29.15%. The perovskite absorber, with a bandgap of 1.68 electron volts, remained phase-stable under illumination through a combination of fast hole extraction and minimized nonradiative recombination at the hole-selective interface. These features were made possible by a self-assembled, methyl-substituted carbazole monolayer as the hole-selective layer in the perovskite cell. The accelerated hole extraction was linked to a low ideality factor of 1.26 and single-junction fill factors of up to 84%, while enabling a tandem open-circuit voltage of as high as 1.92 volts. In air, without encapsulation, a tandem retained 95% of its initial efficiency after 300 hours of operation.Entities:
Year: 2020 PMID： 33303611 DOI： 10.1126/science.abd4016
Source DB: PubMed Journal: Science ISSN： 0036-8075 Impact factor: 47.728