Effect of solvents and annealing treatment on the properties of the methylammonium lead tribromide perovskite thin films

Mhamdi, Asya; Mehdi, Hanadi; Bouazizi, Abdelaziz

doi:10.1007/s10854-020-04994-0

Cited by 5 publications

(2 citation statements)

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“…Several processing techniques have been proposed as effective methods for controlling the quality of perovskite layers, including solvent treatment methods, annealing methods [13] using temperature and humidity to form crystals, controlling the proportion of perovskite solution, moisture-assisted growth, additives, and hot spin-coating [14][15][16]. Moreover, the dependence of the morphological and optical properties on the deposition method used to prepare perovskite films has been studied.…”

Section: Introductionmentioning

confidence: 99%

“…Jeon et al reported the solution processing of efficient PSCs comprising a bilayered architecture and MAPb(I 1−x Br x ) 3 perovskites formed using SET [34]. In another reports [13], the optical (UV-vis and PL) and structural (IR) properties were found to be highly dependent on the perovskite layer prepared with different solvents. Another group has presented a set of solubility data for MAPbBr 3 , FAPbBr 3 MAPbI 3 , and FAPbI 3 , perovskites in DMF and DMSO, and they rationalize the observed differences in solubility by analyzing the donor numbers of the solvents and halide anions [35].…”

Section: Introductionmentioning

confidence: 99%

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Solvent Effects on the Structural and Optical Properties of MAPbI3 Perovskite Thin Film for Photovoltaic Active Layer

et al. 2022

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Controlling the crystallinity, homogeneity, and surface morphology is an efficient method of enhancing the perovskite layer. These improvements contribute toward the optimization of perovskite film morphology for its use in high-performance photovoltaic applications. Here, different solvents will be used in order to process the perovskite precursor, to improve the interfacial contacts through generating a smooth film and uniform crystal domains with large grains. The effect that the solvent has on the optical and structural properties of spin-coated methyl ammonium lead iodide (MAPbI3) perovskite thin films prepared using a single-step method was systematically investigated. The spin-coating parameters and precursor concentrations of MAI and PbI2 were optimized to produce uniform thin films using the different solvents N, N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and γ-butyrolactone (GBL). The effect that the solvent has on the morphology of the MAPbI3 films was examined to determine how the materials can be structurally altered to make them highly efficient for use in perovskite hybrid photovoltaic applications. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) results show that the synthesized MAPbI3 films prepared using DMSO, DMF, and GBL exhibit the best crystallinity and optical characteristics (photoluminescence (PL)), respectively, of the prepared films. The optical properties resulting from the noticeable improvement PL of the films can be clearly correlated with their crystallinity, depending on the solvents used in their preparation. The film prepared in DMSO shows the highest transmittance and the highest bandgap energy of the prepared films.

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