Optical constants of zinc sulfide films determined from transmittance measurements

The optical constants of thermally evaporated thin films of ZnS have been d etermined by measurements of transmittance at normal incidence from two fil ms of different thickness. A single-layer model has been successfully used for the films. The results are compared with those obtained earlier for the rmally evaporated ZnS films using reflectance and transmittance measurement s (where a two-layer model for a ZnS film was used). The advantage of the p resent method over the earlier one is the readily available measurement fac ilities. (C) 2000 Elsevier Science B.V. All rights reserved.