Synthesis of monodispersed silver particles: Synthetic techniques to control shapes, particle size distribution and lightness of silver particles

Sannohe, Kanetaro; Ma, Tingli; Hayase, Shuzi

doi:10.1016/j.apt.2019.09.015

Cited by 9 publications

(4 citation statements)

References 37 publications

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“…It is obvious that the silver powder prepared with gelatin as a dispersant has better monodispersity than other silver powders, and the particle surface smoothness is higher. Sannohe et al [ 23 ] also found that the polymer compound structure has an important role for silver with monodisperse particles due to the adsorption of polymer compounds on the surface of the growing silver particles.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Micro-Size Spherical Silver Particles and Their Application in Conductive Silver Paste

Wan

et al. 2023

Materials

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In this paper, micro-size spherical silver particles were prepared by using a wet-chemical reduction method. The silver particles were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and a laser particle-size analyzer. The results indicate that different types and the content of surfactants can be used to prevent the accumulation, and control the morphology and particle size distribution, of silver particles. Moreover, the morphology of silver particles was changed from polyhedral to spherical when the pH was raised from 1 to 3. Under the optimal synthesis conditions (0.1 mol/L silver nitrate, 0.06 mol/L ascorbic acid, gelatin (5% by weight of silver nitrate), pH = 1), the micro-size spherical silver particles with diameter of 5–8 μm were obtained. In addition, the resistivity of conductive silver paste that prepared with the as-synthesized spherical silver particles was discussed in detail and the average resistivity of the conductive silver paste was 3.57 × 10−5 Ω·cm after sintering at 140 °C for 30 min.

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Section: Resultsmentioning

confidence: 99%

Preparation of Micro-Size Spherical Silver Particles and Their Application in Conductive Silver Paste

Wan

et al. 2023

Materials

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“…A larger D 90 /D 10 ratio indicates a wide particle size distribution and low dispersion [ 30 ]. The D 90 /D 10 ratio of the six samples was low, and the greatest value achieved was 4.24, as shown in Figure 12 a.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Spherical Ultrafine Silver Particles Using Y-Type Microjet Reactor

Wan

et al. 2023

Materials

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Herein, micron-sized silver particles were prepared using the chemical reduction method by employing a Y-type microjet reactor, silver nitrate as the precursor, ascorbic acid as the reducing agent, and gelatin as the dispersion at room temperature (23 °C ± 2°C). Using a microjet reactor, the two reaction solutions collide and combine outside the reactor, thereby avoiding microchannel obstruction issues and facilitating a quicker and more convenient synthesis process. This study examined the effect of the jet flow rate and dispersion addition on the morphology and size of silver powder particles. Based on the results of this study, spherical and dendritic silver particles with a rough surface can be prepared by adjusting the flow rate of the reaction solution and gelatin concentration. The microjet flow rate of 75 mL/min and the injected gelatin amount of 1% of the silver nitrate mass produced spherical ultrafine silver particles with a size of 4.84 μm and a tap density of 5.22 g/cm3.

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“…Conductive inks and pastes, with the use of AgNPs, are used for printed and flexible electronics and front contacts of the crystalline silicon solar cells [17][18]. However, nanotechnology is not exclusive for this kind of application, and the silver powder with the particle size of 500-1500 nm has been extensively used for them [19,20]. The aim of the paper is to establish maximal concentration of the reagents for the wet chemical reduction synthesis of the microsized silver powder in goal to achieve the most enonomic process for use in small and medium industry conditions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of micro-sized silver particles suitable for thick film contacts on solar cells

Dimitrijević¹,

Dimitrijević²,

Miliciani³

et al. 2020

Proceedings of the 8th International Conference on Renewable Electrical Power Sources

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The main goal of the study was to determine parameters for the production of the micro-sized silver powder applicable to the pastes that are in use in solar cell production and maintenance. In all experiments, silver nitrate solution and ascorbic acid were used, as a silver source and reducing agent, respectively. Polyvinylpyrrolidone and gelatine were used as dispersants. The dispersant in this system acts as a protective agent in a way that prevents agglomeration and aggregation processes. The influence of used agents was different, and one of the aims in the research was to determine the pros and cons of them. The optimal parameters of the synthesis were the solution temperature of 45 °C, pH=7, and concentrations of silver and ascorbic acid of 45 g/l and 30 g/l, respectively. Although PVP has proved to be a suitable protecting agent for the goals of the study, the best results were obtained with the use of gelatine as a dispersant in the concentration ratio against the silver ions of 2.5 wt. %.

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Synthesis of monodispersed silver particles: Synthetic techniques to control shapes, particle size distribution and lightness of silver particles

Cited by 9 publications

References 37 publications

Preparation of Micro-Size Spherical Silver Particles and Their Application in Conductive Silver Paste

Preparation of Micro-Size Spherical Silver Particles and Their Application in Conductive Silver Paste

Preparation of Spherical Ultrafine Silver Particles Using Y-Type Microjet Reactor

Synthesis of micro-sized silver particles suitable for thick film contacts on solar cells

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