In‐Situ Polymer Framework Strategy Enabling Printable and Efficient Perovskite Solar Cells by Mitigating “Coffee Ring” Effect

Li, Linfeng; Huang, Zengqi; Meng, Xiangchuan; Xing, Zhi; Fan, Baojin; Li, Jiaxuan; Chen, Yiwang

doi:10.1002/adma.202310752

Cited by 6 publications

(1 citation statement)

References 46 publications

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“…Organic–inorganic hybrid perovskites have attracted wide attention due to their structural diversity and excellent photoelectric applications in solar cells and light-emitting diodes. − It is of great significance to further explore and discover new organic–inorganic hybrid multifunctional materials. The structure of the traditional organic–inorganic hybrid perovskite is expressed by ABX 3 .…”

Section: Introductionmentioning

confidence: 99%

Phase Transition and Luminescent Property Change Induced by Different Organic Cations in One-Dimensional Double Perovskites

Zhou,

Cao,

Zhou

et al. 2024

Inorg. Chem.

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Double perovskites (DPs) have attracted attention in the field of luminescence due to their inherent broadband emission of self-trapping excitons. In this work, we choose [(CH 3 ) 3 NCH 2 CHCH 2 ] + and [CH 3 CHOHCH 2 NH 2 ] + as organic cations to synthesize two new organic−inorganic hybrid DPs, [(CH 3 ) 3 NCH 2 CHCH 2 ] 2 KInCl 6 (1) and [CH 3 CHOHCH 2 NH 2 ] 2 KInCl 6 (2).The [KCl 6 ] 3− and [InCl 6 ] 3− octahedra are interchangeably connected by sharing two opposite faces, forming a one-dimensional coordination chain. Each K atom coordinates with six chlorine atoms in 1, while it coordinates with two oxygen atoms in addition to the six chlorine atoms in 2. The coordination between ions K and O in compound 2 may have significantly reduced its luminescence. As a result, compound 1 shows bright-yellow light with a quantum yield of more than 90%, while 2 shows weak blue light with a quantum yield of only 0.98%. In addition, different from no phase transition found in 2, 1 undergoes a reversible phase transition at 324/307 K in the heating−cooling cycle. Through structural and spectral analysis and density functional theory calculation, we conclude that the larger degree of [InCl 6 ] 3− octahedral distortion and the larger anion distance (In•••In) also cause the PLQY of compound 1 to be higher than that of compound 2.

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Section: Introductionmentioning

confidence: 99%

Phase Transition and Luminescent Property Change Induced by Different Organic Cations in One-Dimensional Double Perovskites

Zhou,

Cao,

Zhou

et al. 2024

Inorg. Chem.

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Permeable Film Enabled Evaporation Control of Liquid‐Assisted Assembly for Printing High‐Uniformity Functional Patterns

Guo,

Yang,

et al. 2024

Adv Funct Materials

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Evaporation‐driven self‐assembly is attractive for functional patterning in a wide range of applications such as nanofabrication, electronics, and biology. But how to regulate the deposition caused by the coffee‐ring effect and produce desirable patterns with high uniformity, generally performing large‐scale printability is challenging. Herein, a multidimensional modulation is developed to prompt highly uniform and scalable patterning of functional materials. The introduction of permeable films enables effective modulation of the desired evaporative distribution and controllably achieves three typical depositions, ring‐like, uniform (coffee‐ring‐free), and eye‐like. The ratio of mass solvent flow rate of evaporation‐to‐pervaporation is demonstrated to predict the deposition form. Mechanism studies show that the direction and rate of mass transport are crucial for the patterning process. Furthermore, the uniformity of scalable depositions with different geometry is systematically evaluated in diverse liquid systems and the functional application is demonstrated. This work provides general insights into the evaporation control of liquid‐assisted assembly and the potential applications of uniform patterns in fields such as electronics and optoelectronics.

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Research Progress of Colloidal Chemistry and Rheological Dynamics for Printable Perovskite Photovoltaics

Gong,

Wang,

Fan

et al. 2024

Advanced Optical Materials

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The efficiency of solar cells based on organic–inorganic hybrid perovskite materials has already met the standards for commercial applications. However, there remains an efficiency gap of ≈30% between small‐area devices and industrial‐scale devices. Large‐area devices, in particular, tend to exhibit lower optoelectronics and reduced environmental stability. The ink fluid behavior significantly influences the crystal process of large‐area perovskite films during printing fabrication, which cannot be disregarded. As the manufacturing area and total solvent volatilization increase, the impact of inhomogeneous migration by perovskite colloidal particles gradually intensifies. This work focuses on elucidating the impact of the rheological properties of perovskite colloidal particles on the crystalline quality and device optoelectronic performance of perovskite films during deposition. It explores the fluid behavior of colloidal particles in the ink and throughout the printing process, the effects of additives on the motion of perovskite colloidal particles, and how the ink's rheological properties change when modifying agents interact with perovskite particles. Additionally, the functional aspects of controlling perovskite film formation and optimizing photovoltaic performance in perovskite solar cells (PSCs) are thoroughly discussed. Ultimately, the preparation process improvement of perovskite precursor solution and the current technical barriers to commercialization are summarized and prospected.

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In‐Situ Polymer Framework Strategy Enabling Printable and Efficient Perovskite Solar Cells by Mitigating “Coffee Ring” Effect

Cited by 6 publications

References 46 publications

Phase Transition and Luminescent Property Change Induced by Different Organic Cations in One-Dimensional Double Perovskites

Phase Transition and Luminescent Property Change Induced by Different Organic Cations in One-Dimensional Double Perovskites

Permeable Film Enabled Evaporation Control of Liquid‐Assisted Assembly for Printing High‐Uniformity Functional Patterns

Research Progress of Colloidal Chemistry and Rheological Dynamics for Printable Perovskite Photovoltaics

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