Light transparent multilayer moisture barrier for electrochemical celltester and cell employing same

A process for making a non-laminated, light transparent, multilayer, thin film composite comprising alternating layers of a water insoluble inorganic material selected from the group consisting of at least one inorganic compound, silicon and mixture thereof and a water insoluble organic material wherein the thickness of said inorganic compound layers and said organic compound layers ranges between about 100 to 10,000 angstroms and between about 100 angstroms to 5 microns, respectively, said process comprising depositing a first layer of said inorganic material on a substrate and then depositing a first layer of solid organic material on said first inorganic material layer, followed by depositing a second layer of said solid inorganic material onto said first layer of organic material and then depositing a second layer of said organic material on said second layer of said inorganic material.