Magnesium Fluoride (MgF2)

Cotter, Thomas M.; Thomas, Michael E.; Tropf, William J.

doi:10.1016/b978-0-08-055630-7.50056-0

Cited by 8 publications

(7 citation statements)

References 43 publications

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“…3a , the spectra of dielectric permittivity of Ag and Au were taken from ref. 33 , and those of Al and MgF 2 were found in refs 34 , 35 , respectively.…”

Section: Methodsmentioning

confidence: 74%

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Peters

Tumkur

Zhu

et al. 2015

Sci Rep

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Proximity to metallic surfaces, plasmonic structures, cavities and other inhomogeneous dielectric environments is known to control spontaneous emission, energy transfer, scattering, and many other phenomena of practical importance. The aim of the present study was to demonstrate that, in spirit of the Marcus theory, the rates of chemical reactions can, too, be influenced by nonlocal dielectric environments, such as metallic films and metal/dielectric bilayer or multilayer structures. We have experimentally shown that metallic, composite metal/dielectric substrates can, indeed, control ordering as well as photodegradation of thin poly-3-hexylthiophene (p3ht) films. In many particular experiments, p3ht films were separated from metal by a dielectric spacer, excluding conventional catalysis facilitated by metals and making modification of the nonlocal dielectric environment a plausible explanation for the observed phenomena. This first step toward understanding of a complex relationship between chemical reactions and nonlocal dielectric environments is to be followed by the theory development and a broader scope of thorough experimental studies.

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“…3a , the spectra of dielectric permittivity of Ag and Au were taken from ref. 33 , and those of Al and MgF 2 were found in refs 34 , 35 , respectively.…”

Section: Methodsmentioning

confidence: 74%

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Peters

Tumkur

Zhu

et al. 2015

Sci Rep

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“…Ellipsometry was done at 632.8, 546.1, and 405.0 nm using a Rudolph Research Auto EL II ellipsometer. Thin-film porosity was calculated using the Lorentz−Lorenz relationship. , Qualitative film hardness was determined by scratching with a steel razor blade.…”

Section: Methodsmentioning

confidence: 99%

“…Magnesium fluoride has low chemical reactivity, low refractive index (1.38), is only mildly affected by high energy radiation, and is both scratch and weather resistant. It has been extensively used as an antireflective and protective coating on glass optics. , Since MgF 2 has an optical cutoff that begins at 132 nm, it has also been employed as an antireflective coating material on vacuum UV optics . Blue-shifting of this optical cutoff to even shorter wavelengths might be expected if such coatings were prepared using nanocrystalline MgF 2 .…”

Section: Introductionmentioning

confidence: 99%

Sol−Gel Synthesis of Nanocrystalline Magnesium Fluoride: Its Use in the Preparation of MgF₂ Films and MgF₂−SiO₂ Composites

Rywak

Burlitch

1996

Chem. Mater.

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Thin, protective films of nanocrystalline MgF 2 were formed by spin-coating a sol that contained nanocrystalline MgF 2 , which was formed by the action of HF on a sol prepared from methanolic H 2 O 2 and Mg(OCH 3 ) 2 . These thin films on Si(100) lost fluoride to form MgO when heated at 550 °C. When the films on two such substrates were placed together face to face and heated at 550 °C, rough, abrasion resistant MgF 2 films were obtained. To form composites, nanocrystalline MgF 2 sols were mixed with silicate sols prepared from the acid catalyzed hydrolysis and condensation of tetramethyl orthosilicate (TMOS). X-ray diffraction and TEM analysis of xerogels and films obtained from these biphasic sols indicated nanocrystals of MgF 2 dispersed in an amorphous matrix. On heating, fluoride loss and MgF 2 crystal growth were both greatly retarded in powders and thin films prepared from silicate-MgF 2 sols.

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“…The AM0 and AM1.5 solar spectral distributions were taken from ASTM standards [13]. Taking into account that there are minimum variations of n and k in the range of interest, a fixed real index of 1.38 was considered for MgF 2 [14]. The internal spectral response SR int was simulated with the PC1D code [15].…”

Section: Theoretical Optimization Of Ar Layersmentioning

confidence: 99%

The influence of the InGaP window layer on the optical and electrical performance of GaAs solar cells

Plá

Barrera

Rubinelli

2007

Semicond. Sci. Technol.

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A wide band gap heterolayer is usually added to the front face of GaAs and other III-V solar cells to favour transparency and to passivate the emitter. This extra front layer influences the optical behaviour of the device and therefore must be taken into account in the optimization of the antireflection (AR) coating. A set of AR layers was optimized with respect to their thicknesses for an InGaP front layer in GaAs solar cells. Complementary, numerical simulation of the whole device was performed using the D-AMPS code. Our results confirm the importance of surface passivation and demonstrate that the thickness of 30 nm usually proposed for this window layer is not the optimal.

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Magnesium Fluoride (MgF2)

Cited by 8 publications

References 43 publications

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Sol−Gel Synthesis of Nanocrystalline Magnesium Fluoride: Its Use in the Preparation of MgF₂ Films and MgF₂−SiO₂ Composites

The influence of the InGaP window layer on the optical and electrical performance of GaAs solar cells

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Magnesium Fluoride (MgF2)

Cited by 8 publications

References 43 publications

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Control of a chemical reaction (photodegradation of the p3ht polymer) with nonlocal dielectric environments

Sol−Gel Synthesis of Nanocrystalline Magnesium Fluoride: Its Use in the Preparation of MgF2 Films and MgF2−SiO2 Composites

The influence of the InGaP window layer on the optical and electrical performance of GaAs solar cells

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Product

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Sol−Gel Synthesis of Nanocrystalline Magnesium Fluoride: Its Use in the Preparation of MgF₂ Films and MgF₂−SiO₂ Composites