Anti-Reflexion Films Evaporated on Glass

Bannon, J.

doi:10.1038/157446a0

Cited by 9 publications

(1 citation statement)

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“…For Mg-and Sr-doped CaF 2 systems, there are no experimental reference values about their band gaps, so doped systems are not scissors corrected. Table 3 displays a series of experimental optical parameters, from Table 3 we acquire that our calculated optical properties of CaF 2 bulk are approximately in accordance with the experimental results [30][31][32][33]. For Mg-and Sr-doped CaF 2 systems, C. Pandurangappa et al [19] studied their morphological features, optical absorption spectrum and photoluminescence spectrum.…”

Section: Optical Propertiessupporting

confidence: 75%

First-Principles Calculations of the Electronic Structures and Optical Properties of Mg- and Sr-Doped $CaF_2$

Peng¹

2014

JAMS

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Based on the density functional theory (DFT), the first-principles methods are used to study and compare the electronic structures and optical properties of Mg-, Sr-doped CaF 2 systems with those of CaF 2 bulk in detail. In contrast to CaF 2 bulk, the band gaps of doped systems become narrower and the new peaks of density states appear. The orbital interactions between Mg, Sr atoms and Ca atom are enhanced near the Fermi level, besides, the doped systems all show single dielectric properties and their absorption coefficients for ultraviolet light are reduced greatly, for Ca 7 SrF 16 system, there is a small absorption peak at 25.44 eV. Compared with CaF 2 bulk, doped systems have much lower extinction coefficients and much higher light transmittance in the ultraviolet region. In addition, their reflection and loss peaks all display red shift and the peak value reduce.

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