Speaker
Aleš Vlk
Description
Open circuit voltage VOC is the main parameter which affects the power conversion efficiency of a perovskite solar cell. Its value is negatively affected by the number of defects in the material. Therefore, it is important to determine their amount, and location and develop effective ways to remove or passivate them. Here, we present an overview of our work on this topic. We discuss the relation between Urbach energy and losses in VOC. Moreover, we demonstrate a new way of interpreting photothermal deflection spectroscopy measurement to differentiate between surface and bulk defects and suggest a nitrogen plasma treatment as an industry-ready technology for defect treatment.
Primary author
Co-authors
Dr
Antonín Fejfar
(Institute of Physics, Czech Academy of Sciences)
Dr
Jakub Holovský
(Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 16200 Prague, Czech Republic)
Dr
Katarina Pekárková
(Institute of Physics of the Czech Academy of Sciences, Cukrovarnicka 10, 16200 Prague, Czech Republic)
Lucie Landová
(Institute of Physics of the Czech Academy of Sciences)
Martin Ledinský
Robert Hlaváč
Zdeněk Remeš
Zdeňka Hájková
