Fast laser writing of copper and irisium lines from thin solid surface layers of metalorganic compounds

Abstract

Laser direct writing of metal lines from solid metalorganic films coated onsurfaces has been studied in three systems. We report on copper deposition from Cu(HCOO)2 · 2H2O at higher writing speeds than previously attained. Direct writing of iridium lines from two novel Ir-cluster films [Ir4(CO)11Br][N(C2H5)4] and [Ir6(CO)15][N(CH3)3C8H17]2 is demonstrated. The copper and iridium lines are written on Pyrex. It was found that inhomogeneities in the metalorganic layer are crucial to the quality of the deposited metal. Laser writing of iridium at several cm s-1 gives lines of about 10 μm width, with electrical resistivities of the order of 10 times the bulk value.