Triangular coordinate graphical presentation of the optical performance of a semitransparent metal film.
The optical performance of an ideal thin film can be represented by a single point on a triangular coordinate graph, because the sum of the reflectance, transmittance, and absorption is unity. Several examples are presented to show how the triangular coordinate graph provides a useful perspective to the interplay between the performance and the optical properties of a semitransparent metal film.
Apfel
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