Journal
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
Volume 108, Issue -, Pages 1960-1968Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2016.11.095
Keywords
Laser sintering; Inkjet printing; Silver nanoparticles; Specific resistance; Neck growth; Surface morphology
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Funding
- Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20141010101850]
- Industrial Technology Innovation program - Ministry of Trade, Industry and Energy of the Korean Government [10052802]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20141010101850, 10052802] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The temperature effect on the electrical characteristics and surface morphology of printed silver ink was investigated for laser irradiation with various laser scanning speeds and intensities. Inkjet-printed silver lines onto a glass substrate were irradiated with a 532 nm continuous wave. The electrical resistance was measured after laser sintering with various scanning speeds and intensities. The temperature field was invoked in the printed silver ink line by laser scanning sintering and this was predicted by numerical analysis. This temperature field show a quasi-steady state behavior since laser irradiation can be considered as a moving heat source. Field emission scanning electron microscope images were then examined with calculated temperatures of printed silver ink. The relation of surface morphology with temperature field were discussed. The effect of a laser scanning speed on the specific resistance of the conductive ink line was intensively investigated. (C) 2017 Elsevier Ltd. All rights reserved.
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