METHOD FOR FORMING GOLD THIN FILM ONTO SILICON PRISM SURFACE FOR SURFACE REINFORCING INFRARED DISPERSION

摘要

PROBLEM TO BE SOLVED: To provide a new method for forming a gold thin film on a silicon prism surface for surface reinforcing infrared dispersion, and obtaining the degree of reinforcement of 50 times or more in adsorption kinds and solution kinds by improving the adhesion of the gold thin film and a silicon prism. SOLUTION: The silicon prism surface for the surface reinforcing infrared dispersion is treated with hydrofluoric acid, and next, a discontinuous and smooth gold silicide very thin film (thickness does not exceed a few atom layers) is made by oxidizing and dissolving a part thereof with aqua regia. The discontinuous and smooth gold film is formed on the silicon prism surface by depositing a gold thin film (approximately 30 nm thick) thereon. COPYRIGHT: (C)2004,JPO