IEC 63567-1 ED1 proposes a method of measuring the transmittance of extreme ultraviolet (EUV) pellicle used for extreme ultraviolet lithography (EUVL) and provides guidelines on the conditions of the transmittance measurement instrument using EUV with a short wavelength and methods for calculating EUV transmittance.
The scope of this document applies to all types of membranes attached to the front side of a reflective mask (or reflective reticle) used in EUVL to physically protect the reflective mask from contaminant particles generated inside the chamber during EUV exposure.
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IEC 63567-1 ED1
50.60
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Nov 6, 2026