Mixed Metal Deposition by Laser Photothermal Dissociation for Electronic and Metallurgical Applications
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
A novel technique for mixed metal deposition by laser-induced photothermal dissociation is described. The technique reduces process steps and complexity in Surface Mount Assembly. It can also be used to provide corrosion protection of complex parts via surface coatings. Oranometallic compounds, such as metal alkyls, carbonyls, or metal-ligand structures, with relatively low bond energies, serve as precursors for laser induced dissociation. Laser irradiation of these precursor compounds in condensed or gas phase results in either photochemical or photothermal decomposition leading to the formation of metal [1, 2, 3]. The concept described uses a mixture of precursor compounds and in-situ deposition of mixed metals (alloys) on a substrate.