Thin-film metallization of CuInGaSe2 nanoparticles by supersonic kinetic spraying

Park, Jung Jae; Lee, Jong Gun; James, Scott C.; Al-Deyab, Salem S.; Ahn, SeJin; Yoon, Sam S.

doi:10.1016/j.commatsci.2015.01.009

Cited by 14 publications

(1 citation statement)

References 31 publications

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“…The We of droplet impact is selected in the range of 22–557, which is common in the process of spray combustion, spraying, atmospheric raindrop formation, and so forth. − ,,− To a certain extent, the study of microscopic scale droplet collision can deepen the understanding of droplet collision at the macro scale. The research on the collision of droplet diameter of 10 nm with We over 250 is of great significance for the development and application of high-speed spraying technology of nanoparticles. − Among the eight regimes of the head-on collision results of equal-sized droplets, no bounce regime is found in the collision results of water droplets at atmospheric pressure and at room temperature, ,,,, so slow coalescence and fast coalescence are no longer distinguished, collectively referred to as coalescence. In the sections that follow, we performed visual analysis of the gas molecules between the droplets and collision results, and no reflexive separation and finger structure is found.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Study on Regimes of Head-on Droplet Collision

Liu

Sun

et al. 2021

Langmuir

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The head-on collision of two water droplets with a diameter of 10 nm in an atmospheric environment was investigated via molecular dynamics simulations. The gas molecules between droplets were visualized, and the phenomena of gas extrusion and gas molecules being captured were found. By observing and analyzing the holes regime, a “periphery-sucking” mechanism was proposed to explain the thinning in the middle of the expanding disk and the holes appearing. It was found that the splattering regime can be divided into the limited splattering regime and the divergent splattering regime. The splattering modes and droplet characteristics of the two regimes are markedly different. The non-bonded interactions and intermolecular hydrogen bond were analyzed, and it was found that increasing the Weber number (We) can effectively promote the mixing of the two droplets, promote the formation of an intermolecular hydrogen bond between the two droplets, and reduce the average lifetime of the intermolecular hydrogen bond. The radial distribution function between the water molecules was plotted, showing that increasing the We makes the water molecules more dispersed as a whole in the collision process.

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Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Study on Regimes of Head-on Droplet Collision

Liu

Sun

et al. 2021

Langmuir

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Recent Advances and Perspectives on Powder‐Based Halide Perovskite Film Processing

Leupold

Panzer

2021

Adv Funct Materials

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Halide perovskites have undergone an impressive development and could be used in a wide range of optoelectronic devices, where some of them are already at the edge of commercialization, e.g., perovskite solar cells. Recently, interest in perovskites in powder form has increased, as for example, they are found to exhibit high stability and allow for easy production of large quantities. Accordingly, also the topic of processing thin and thick films on the basis of perovskite powders is currently gaining momentum. Here, perovskite powder can form the basis for both, typical wet and solvent-based processing approaches, as well as for dry processes. In this Progress Report, the recent developments of halide perovskites in powder form and of film processing approaches are summarized that are based on them. The advantages and opportunities of the different processing methods are highlighted, but their individual drawbacks and limitations are also discussed. Prospects are also pointed out and possible steps necessary to unlock the full potential of powder-based processing methods for producing high quality thick and thin perovskite layers in the future are discussed.

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Supersonic Cold Spraying for Energy and Environmental Applications: One‐Step Scalable Coating Technology for Advanced Micro‐ and Nanotextured Materials

Joshi

Yarin

et al. 2019

Advanced Materials

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Supersonic cold spraying is an emerging technique for rapid deposition of films of materials including micron-size and submicron metal particles, nanoscale ceramic particles, clays, polymers, hybrid materials comprised of polymers and particulates, reduced graphene oxide (rGO), and metal-organic frameworks. In this method, particles are accelerated to a high velocity and then impact a substrate at near ambient temperature, where dissipation of their kinetic energy produces strong adhesion. This manuscript reviews the recent progress in fundamentals and applications of cold spraying. High velocity impact with the substrate results in significant deformation, which not only produces adhesion, but can change the particles' internal structure. Cold-sprayed coatings can also exhibit micro-and nanotextured morphologies not achievable by other means. Suspending micro-or nanoparticles in a liquid and cold-spraying the suspension produces fine atomization and even deposition of materials that could not otherwise be processed. The scalability and low-cost of this method and its This article is protected by copyright. All rights reserved. 3 compatibility with roll-to-roll processing make it promising for many applications, including ultra-thin flexible materials, solar cells, touch-screen panels, nanotextured surfaces for enhanced heat transfer, thermal and electrical insulation films, transparent conductive films, materials for energy storage (e.g. Li-ion battery electrodes), heaters, sensors, photoelectrodes for water splitting, water purification membranes, and self-cleaning films.

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Thin-film metallization of CuInGaSe2 nanoparticles by supersonic kinetic spraying

Cited by 14 publications

References 31 publications

Molecular Dynamics Study on Regimes of Head-on Droplet Collision

Molecular Dynamics Study on Regimes of Head-on Droplet Collision

Recent Advances and Perspectives on Powder‐Based Halide Perovskite Film Processing

Supersonic Cold Spraying for Energy and Environmental Applications: One‐Step Scalable Coating Technology for Advanced Micro‐ and Nanotextured Materials

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