METHOD OF FABRICATING HIGHLY CONDUCTIVE FEATURES WITH SILVER NANOPARTICLE INK AT LOW TEMPERATURE

摘要

A method of fabricating highly conductive (low resistive) features with silver nanoparticle inks at low processing temperature including room temperature is provided, The method includes 1) printing (20) a silver nanoparticle ink to form a conductive feature on a substrate; 2) drying/annealing (30) the printed feature at a temperature compatible with the substrate; 3) treating (35) the annealed feature in a humidity environment; and 4) optionally drying (40) the treated conductive feature. The silver nanoparticle conductive features exhibit a decrease in resistivity from about a factor of 2 up to about a few orders of magnitude after exposure to the humidity treatment.