Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/618
Title: Efficient Vacuum-Deposited Perovskite Solar Cells with Stable Cubic FA(1)(-x)MA(x)PbI(3)
Authors: Gil-Escrig, Lidon
Dreessen, Chris
Kaya, İsmail Cihan
Kim, Beom-Soo
Palazon, Francisco
Sessolo, Michele
Bolink, Henk J.
Keywords: Formamidinium Lead Iodide
Phase
Methylammonium
Junction
Cation
Layers
Limit
Issue Date: 2020
Publisher: AMER CHEMICAL SOC
Abstract: Preparation of black formamidinium lead iodide (FAPbI(3)) requires high-temperature annealing and the incorporation of smaller A-site cations, such as methylammonium (MA(+)), cesium, or rubidium. A major advantage of vacuum processing is the possibility to deposit perovskite films at room temperature (RT), without any annealing step. Here we demonstrate stabilization of the cubic perovskite phase at RT, in a three-source co-sublimation method. We found that the MA(+) incorporation is a self-limiting process, where the amount of MA(+) which is incorporated in the perovskite is essentially unvaried with increasing MAI deposition rate. In this way a phase-pure, cubic perovskite with a bandgap of 1.53 eV can be obtained at room temperature. When used in fully vacuum-processed perovskite solar cells, PCEs up to 18.8% are obtained. Despite the presence of MA(+), the solar cells were found to be thermally stable and maintained 90% of their initial efficiency after 1 month of continuous operation.
URI: https://doi.org/10.1021/acsenergylett.0c01473
https://hdl.handle.net/20.500.13091/618
ISSN: 2380-8195
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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