Patent ID: 8828627

Claim:
A reflective mask for EUV lithography (EUVL) having a mask pattern region and a region outside the mask pattern region on a substrate, wherein in the mask pattern region, a reflective layer for reflecting EUV light is formed on the substrate, and on the reflective layer, a portion having an absorber layer for absorbing EUV light provided and a portion having no absorber layer provided are arranged to form a mask pattern; and in the region outside the mask pattern region, a reflective layer for reflecting EUV light, an absorber layer for absorbing EUV light and a light shielding layer for suppressing reflection of EUV light and DUV-Vis light having a wavelength of from 190 to 500 nm are formed in this order on the substrate; and wherein in the region outside the mask pattern region, the average EUV reflectivity at a wavelength range of from 13.3 to 13.7 nm from the surface of the light shielding layer is less than 0.5%, and the DUV-Vis reflectivity at a wavelength of from 190 to 500 nm from the surface of the light shielding layer is at most 30%.