Solvent evaporation induced preferential crystal orientation BiI3 films for the high efficiency MA3Bi2I9 perovskite solar cells

Li, Jihong; Han, Huifang; Li, Bicui; Zhao, Chenxu; Xu, Jia; Yao, Jianxi

doi:10.1016/j.jallcom.2022.164725

Cited by 8 publications

(2 citation statements)

References 47 publications

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“…In contrast, Bi-based analogues demonstrate low toxicity and remarkable stability in air, making them promising candidates for Pb-based alternatives. , To date, various Bi-based materials have been reported, including FA 3 Bi 2 I 9 (FA: formamidinium), MA 3 Bi 2 I 9 (MA: methylammonium), Cs 3 Bi 2 I 9 , and CsBi 3 I 10 . Among them, all-inorganic CsBi 3 I 10 has emerged as one of the most promising photovoltaic materials owing to its good chemical stability, appropriate band gap (1.78 eV), and strong visible light absorption.…”

Section: Introductionmentioning

confidence: 98%

Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Yang

Deng

et al. 2022

ACS Appl. Energy Mater.

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The CsBi3I10 (CBI) semiconductor as a light absorber emerges as a promising alternative to lead-based perovskites owing to its low toxicity, good stability, and satisfying physical properties. However, CBI exhibits an uncontrollable crystallization process, poor film morphology, high defect density, and short carrier lifetime, which lead to inferior optoelectronic properties, limiting its practical application in solar cell devices. Here, the Sb doping strategy is successfully developed for CBI films by a one-step antisolvent-free fabrication method. It is found that Sb incorporation in binary CsBi3–x Sb x I10 can modulate the crystallization kinetics and optimize the film quality. As a result, polycrystalline films with high density and few pinholes are obtained to enable the enhancement of light absorbance, reduction of defects, suppression of nonradiative recombination, and increase of surface hydrophobicity. The solar cells based on the CsBi2.7Sb0.3I10 film show a remarkably improved power conversion efficiency of 0.82% compared to that of pristine CBI (0.22%), which is among the highest reported efficiencies for CBI-based thin-film solar cells. Moreover, unencapsulated devices based on Sb-doped CBI exhibit outstanding environmental stability and moisture tolerance. This work not only offers insights into understanding the binary Bi-based materials but also provides a new way to fabricate efficient and stable Bi-based solar cells.

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Section: Introductionmentioning

confidence: 98%

Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Yang

Deng

et al. 2022

ACS Appl. Energy Mater.

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“…The latter dictated not only the type of perovskite crystals that would be obtained but also how fast such crystals would grow, i.e., how flawless they would become from a structural point of view. We based our strategy on the well-known correlations between the evaporation and crystallization rates that occur when processing perovskite materials [ 65 , 66 ]. Although other variants of perovskite processing methods based on solvent evaporation were previously reported in the literature [ 67 , 68 , 69 ], the advantage of our setup lies in the possibility of nucleating only a small number of crystals, which can be grown independent of each other (note that perovskite crystals start “coalescing” only at very late stages of crystallization, when their size increases).…”

Section: Resultsmentioning

confidence: 99%

Growth of Hybrid Perovskite Crystals from CH3NH3PbI3–xClx Solutions Subjected to Constant Solvent Evaporation Rates

et al. 2023

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In this work, we subjected hybrid lead-mixed halide perovskite (CH3NH3PbI3–xClx) precursor inks to different solvent evaporation rates in order to facilitate the nucleation and growth of perovskite crystals. By controlling the temperature of perovskite solutions placed within open-air rings in precise volumes, we established control over the rate of solvent evaporation and, thus, over both the growth rate and the shape of perovskite crystals. Direct utilization of diluted lead-mixed halide perovskites solutions allowed us to control the nucleation and to favor the growth of only a low number of perovskite crystals. Such crystals exhibited a clear sixfold symmetry. While crystals formed at a lower range of temperatures (40–60 °C) exhibited a more compact dendritic shape, the crystals grown at a higher temperature range (80–110 °C) displayed a fractal dendritic morphology.

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Lead-Free Perovskite Solar Cells

Dey,

Kar

2024

Engineering Materials

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Solvent evaporation induced preferential crystal orientation BiI3 films for the high efficiency MA3Bi2I9 perovskite solar cells

Cited by 8 publications

References 47 publications

Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Growth of Hybrid Perovskite Crystals from CH3NH3PbI3–xClx Solutions Subjected to Constant Solvent Evaporation Rates

Lead-Free Perovskite Solar Cells

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Solvent evaporation induced preferential crystal orientation BiI3 films for the high efficiency MA3Bi2I9 perovskite solar cells

Cited by 8 publications

References 47 publications

Antimony Doping of CsBi3I10 for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Antimony Doping of CsBi3I10 for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Growth of Hybrid Perovskite Crystals from CH3NH3PbI3–xClx Solutions Subjected to Constant Solvent Evaporation Rates

Lead-Free Perovskite Solar Cells

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Product

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Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells

Antimony Doping of CsBi₃I₁₀ for Tailoring the Film Morphology and Defects toward Efficient Lead-Free Thin-Film Solar Cells