Journal
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
Volume 21, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/21/12/125023
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Funding
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0017969, 2010-0007120]
- National Research Council of Science & Technology (NST), Republic of Korea [2V0220, B551179-10-01-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-0013807, 2010-0007120] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In this work, the microstructures of inkjet-printed nanosilver films sintered by intense pulsed light (IPL) were systematically analyzed and correlated with the electrical properties. Nanosilver films with various dimensions were inkjet-printed and sintered at different light intensities to investigate the effects of the film dimension and light intensity on the sintering characteristics. For comparison purposes, the same inkjet-printed films were also thermally sintered at 210 degrees C for 1 h. Consecutive light pulses from a xenon lamp induced film swelling and the corresponding hollow microstructures of the inkjet nanosilver films. The resistance of IPL-sintered films was inversely proportional to the light intensity, and the resultant conductivity comparable to the thermally sintered one was achieved within just a few tens of ms, without damaging a polymer substrate. While all the thermally sintered patterns experienced shrinkage during the sintering process, the IPL-sintered ones could keep their initial dimension at a certain light intensity.
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