Effect of mixed iodine and bromine on optical properties in methylammonium lead chlorine (MAPbCl3) spin-coated on the zinc oxide film

The optical influence of mixing methylammonium lead chlorine (MAPbCl 3 ) with iodine and bromine was studied in this work. The spin coating method deposited three layers of perovskites (MAPbCl 3 , MAPbCl 2 I, and MAPbCl 2 Br) on a layer of zinc oxide (ZnO). The zinc oxide solution was prepared by di...

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Bibliographic Details
Published in:E3S web of conferences 2023-01, Vol.412, p.1066
Main Authors: Emmanuel Koné, Klègayéré, Bouich, Amal, Soro, Donafologo, Marí Soucase, Bernabé
Format: Article
Language:English
Subjects:
absorption
band gap
optical property
perovskite
spin coating
stability
zno
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Summary:The optical influence of mixing methylammonium lead chlorine (MAPbCl 3 ) with iodine and bromine was studied in this work. The spin coating method deposited three layers of perovskites (MAPbCl 3 , MAPbCl 2 I, and MAPbCl 2 Br) on a layer of zinc oxide (ZnO). The zinc oxide solution was prepared by dissolving dehydrated zinc acetate [Zn(CH 3 COO) 2 , 2H 2 O]> 99.5% purity in ethanol to give a 0.5 M solution. The perovskite solutions were prepared using lead chloride (PbCl 2 ), 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 (MAPbCl 3 ) is the most stable.
ISSN:2267-1242
2267-1242
DOI:10.1051/e3sconf/202341201066