研究目的
Investigating the sintering kinetics and the mechanism of achieving uniform film morphology from silver nano-dispersion through evaporation of the solvent.
研究成果
The study successfully demonstrated that the modulation of dwell-time and annealing temperature can control the morphology of silver films from nano-dispersion. A linear isothermal sintering model was effective in predicting grain sizes post-annealing, with the grain growth parameter increasing with temperature due to reduced porosity and increased solid-solid interfaces. This enhances the percolation paths for charge carriers, beneficial for electronic applications.
研究不足
The study is limited to polyol-derived silver nano-dispersion and specific annealing temperatures and dwell-times. The model assumes spherical particles and does not account for abnormal grain growth at higher temperatures.
1:Experimental Design and Method Selection:
The study involved drop casting of silver nano-dispersion followed by annealing at different temperatures and dwell-times to investigate the sintering kinetics and morphological evolution.
2:Sample Selection and Data Sources:
Polyol-derived silver nano-dispersion was used, with samples annealed at temperatures ranging from 120 to 250 °C and dwell-times of 10, 20, and 30 min.
3:List of Experimental Equipment and Materials:
Dektak XT profilometer (Bruker), Optical microscope (Olympus BX53-F, PerkinElmer), Scanning Electron Microscope (SEM, model JSM 6380, JEOL).
4:Experimental Procedures and Operational Workflow:
Drop casting of silver dispersion on a substrate, followed by annealing at specified temperatures and dwell-times, then analysis of morphology and grain size.
5:Data Analysis Methods:
Grain size distribution was determined from SEM micrographs and analyzed using ImageJ software. A linear isothermal sintering model was used to predict grain sizes post-annealing.
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