2026-04-14T05:27:01Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/5296302024-12-20T19:34:19Zcom_2072_300912com_2072_4427col_2072_301309

Analysis of the Oxygen Passivation Effects on MAPbI3 and MAPbBr3 in Fresh and Aged Solar Cells by the Transient Photovoltage Technique Su, Lijun Méndez Màlaga, Maria Jiménez-López, Jesús Zhu, Miaoli Xiao, Yaoming Palomares Gil, Emilio José Previous studies have revealed that for some perovskite compositions, power conversion efficiencies (PCEs) improved after storing the devices in different ambient conditions. With the aim of better understanding such improvements, we focus our attention on the carrier/ionic dynamic kinetics of fresh and aged PSCs with different perovskite compositions (MAPbI3 and MAPbBr3) and using spiro-OMeTAD as HTM. For that, we use transient photovoltage (TPV), a technique used to analyse the different recombination kinetics at equilibrium and at different illumination times. We observe that the aging treatment causes significant changes on the kinetics behaviour for bromide-based devices, resulting in a positive influence on the cell performance (from 3.5 % to 6.1 % PCE, in reverse scan). However, the kinetics for those iodide-based perovskite solar cells remains unchangeable (from 16.3 % to 15.0 % PCE, in reverse scan). 2022-12-16T12:51:55Z 2024-04-23T11:06:05Z 2022-12-16T12:51:55Z 2024-04-23T11:06:05Z 2022-12-16T12:51:55Z 2024-04-23T11:06:05Z 2021-07-12 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/2072/529630 https://doi.org/10.1002/cplu.202100204 eng MCINN for the project PID2019-109389RB-I00 SGR-2017SGR00978 China Scholarships Council (2019- 08140093 National Natural Science Foundation of China (Grant No. 21671124) Fujian Natural Science Funds for Distinguished Young Scholar (2020J06046) info:eu-repo/semantics/openAccess Wiley Online Library RECERCAT (Dipòsit de la Recerca de Catalunya)