@article{399d637ee7cb4fb286e332f06cb9543e,
title = "Modulation of Charge Recombination in CsPbBr3 Perovskite Films with Electrochemical Bias",
abstract = "The charging of mesoscopic TiO2 layer in a metal halide perovskite solar cell can influence the overall power conversion efficiency. By employing CsPbBr3 films deposited on a mesoscopic TiO2 film, we have succeeded in probing the influence of electrochemical bias on the charge carrier recombination process. The transient absorption spectroscopy experiments conducted at different applied potentials indicate a decrease in the charge carrier lifetimes of CsPbBr3 as we increase the potential from -0.6 V to + 0.6 V vs. Ag/AgCl. The charge carrier lifetime increased upon reversing the applied bias, thus indicating the reversibility of the photoresponse to charging effects. The ultrafast spectroelectrochemical experiments described here offer a convenient approach to probe the charging effects in perovskite solar cells.",
author = "Scheidt, {Rebecca A} and Samu, {Gergely F.} and Csaba Jan{\'a}ky and Kamat, {Prashant V.}",
note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): OCRF-2014-CRG3-2268 Acknowledgements: PVK acknowledges support by the Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences of the U.S. Department of Energy (award DE-FC02-04ER15533). RS acknowledges support of King Abdullah University of Science and Technology (KAUST-Award OCRF-2014-CRG3-2268). This collaborative research received funding from the European Research Council (ERC) under the EU{\textquoteright}s Horizon 2020 research and innovation program (GFS and CJ, grant agreement No 716539). ELIALPS is supported by the EU and co-financed by the European Regional Development Fund (GOP-1.1.1-12/B-2012-000, GINOP-2.3.6-15-2015-00001). This is contribution number NDRL No.5191 from the Notre Dame Radiation Laboratory. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",
year = "2017",
month = nov,
day = "21",
doi = "10.1021/jacs.7b10958",
language = "English (US)",
volume = "140",
pages = "86--89",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "1",
}