Removing Leakage and Surface Recombination in Planar Perovskite Solar Cells
By Kristofer Tvingstedt, L. Gil‐Escrig, Cristina Momblona, Philipp Rieder, David Kiermasch, M. Sessolo, Andreas Baumann, Henk J. Bolink, V. Dyakonov. 2017
267 citations recorded by the source corpus.
Thin-film solar cells suffer from various types of recombination, of which leakage current usually dominates at lower voltages. Herein, we demonstrate first a three-order reduction of the shunt loss mechanism in planar methylammonium lead iodide perovskite solar cells by replacing the commonly used hole transport layer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) with a better hole-selective polyarylamine. As a result, these cells exhibit superior operation under reduced light conditions, which we demonstrate for the extreme case of moonlight irradiance, at which open-circuit voltages of 530 mV can still be obtained. By the shunt removal we also observe the VOC to drop to zero after as long as 2 h after the light has been switched off. Second, at higher illumination intensities the dominant losses in the PEDOT:PSS-based cell are ascribed to surface recombination and are also proven to be substantially minimized by instead employing the polyarylamine. We attribute the reduced shunt a...
Subfields: Electrical and Electronic Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/a4ccab94d872f6c8b27b19eb28861d4a3f3c7f12
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In Electrical and Electronic Engineering
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- Christian M. Wolff
In Polymers and Plastics
Citations in the corpus
- The perovskite/transport layer interfaces dominate non-radiative recombination in efficient perovskite solar cells (2018, background): “In order to draw correlations between the QFLS and the energetics of the HTL, we also investigated other common organic semiconductors, namely P3HT (an intrinsic polythiophene-based macromolecular semiconductor which exhibits a considerably smaller bandgap and thus absorbs light throughout the visib”