Widely adjustable optical functional layer, e.g. as UV protection for plastic films, glass, textiles, food – Effective UV-A protection from 320-470n

By means of a novel method, it was possible to create, by making full use of the “Bowing effect” ? against prevalent views ?, a ternary compound whose absorption edge can be freely adjusted over a wide range and which features a sharp absorption edge (e.g. ZnOxS(1-x) with c. 320 ? 470 nm 2,6-3,8eV, UV-B range).
To do so, the novel method uses production methods which have already been established (thin layer deposition), particularly advantageous sputter and chemical deposition techniques.

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