What are the density values for thermally evaporated Al and ZnS thin films?

12 December 2014 1 4K Report

Are there any reports/regionable values for the density of physically evaporated thin films of Al, Au, Ag and ZnS, ZnSe, MgF2. etc?

Dirk Luetzenkirchen-Hecht

In general, the microstructure of a thin film is different from the corresponding bulk material, the grains are in many cases smaller (nano-sized) and thus the density is smaller compared to the bulk. Typical values are in the order of several % reduction of the density - depending on the details of the actual depositions (i.e. deposition speed, vacuum conditions, substrate temperature during deposition or a subsequent annealing process, and others). Check the literature for more details!

Good luck, Dirk

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