Journal
JOURNAL OF ELECTRONIC MATERIALS
Volume 44, Issue 12, Pages 4811-4818Publisher
SPRINGER
DOI: 10.1007/s11664-015-4033-9
Keywords
Printed electronics; laser direct writing; micropatterns; nanometal ink; hybrid polymer; double-decker-shaped polysilsesquioxane (DDPSQ)
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This paper describes fabrication of conductive, highly adhesive silver (Ag) micropatterns on transparent flexible double-decker-shaped polysilsesquioxane (DDPSQ) film by a laser direct writing technique using a precursor film prepared from liquid-dispersed Ag nanoparticles. The laser-written Ag micropatterns have been characterized by optical microscopy, field-emission scanning electron microscopy, surface profilometry, and resistivity measurements. The line width of the Ag micropatterns can be flexibly controlled by changing the objective lens magnification and laser spot size. Using a x100 objective lens and laser energy density of 170.50 kW/cm(2), Ag micropatterns with line width of about 4 mu m have been achieved. The Ag micropatterns show excellent adherence to the DDPSQ surface as evaluated by Scotch-tape test. The resistivity of the Ag micropatterns has been determined to be 4.1 x 10(-6) abroken vertical bar cm using the two-point probe method, being almost comparable to that of bulk Ag (1.6 x 10(-6) abroken vertical bar cm). Thus, high-quality, narrow, homogeneous Ag microlines with high conductivity and adhesion can be produced under optimized laser scanning conditions.
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