| Issue |
E3S Web Conf.
Volume 412, 2023
International Conference on Innovation in Modern Applied Science, Environment, Energy and Earth Studies (ICIES’11 2023)
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|
|---|---|---|
| Article Number | 01066 | |
| Number of page(s) | 9 | |
| DOI | https://doi.org/10.1051/e3sconf/202341201066 | |
| Published online | 17 August 2023 | |
Effect of mixed iodine and bromine on optical properties in methylammonium lead chlorine (MAPbCl3) spin-coated on the zinc oxide film
1 Institute of Design & Fabrication (IDF)– Polytechnic University of Valencia UPV, Spain.
2 Física Applicada a las Ingenierías Aeronáutica y Naval & Instituto de Energía Solar, Universidad Politècnica de Madrid, Madrid, Spain.
3 Département des Sciences et Technologie, Ecole Normale Supérieure (ENS) d’Abidjan, Côte d’Ivoire.
The optical influence of mixing methylammonium lead chlorine (MAPbCl3) with iodine and bromine was studied in this work. The spin coating method deposited three layers of perovskites (MAPbCl3, MAPbCl2I, and MAPbCl2Br) on a layer of zinc oxide (ZnO). The zinc oxide solution was prepared by dissolving dehydrated zinc acetate [Zn(CH3COO)2, 2H2O]> 99.5% purity in ethanol to give a 0.5 M solution. The perovskite solutions were prepared using lead chloride (PbCl2), methylammonium chloride (MACl), methylammonium iodide (MAI), and methylammonium bromide (MABr). The precursor containing iodine was dissolved in N, N-dimethylformamide (DMF) and the others in dimethyl sulphoxide (DMSO 99.9%). The films produced were characterized by UV-Visible. The analysis showed that the sample mixed with iodine has good properties. This sample absorbs the most and has a small band gap of 2 eV. The degradation study reveals that the unmixed sample (MAPbCl3) is the most stable.
Key words: Perovskite / ZnO / spin coating / optical property / absorption / band gap / stability
© The Authors, published by EDP Sciences, 2023
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