Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Silicon photo-oxidation

Diphenylsila)cyclohexanone, an unusual cyclic acyl silane, has been found to undergo photo-oxidation promoted by ambient light to produce the silicon-containing lactone 55. 1,1-Diphenylsilacyclohexanone was stable in the presence of oxygen in the... [Pg.1646]

The most frequently used substances for n-doping of hematite are oxides of silicon and titanium. Photo-oxidation of water at Si- and Ti-doped hematite has accordingly been studied extensively [1, 6, 7, 12, 18, 20, 21, 61]. In general, the conductivity is improved by these dopants. However, there seems to be a limit for the improvement by doping. For example, concentrations over 0.5 atom percent of titanium in hematite have been stated to have no effect on the resistivity [7]. [Pg.100]

There have been a number of contributions relating to photo-oxidations in which silicon plays a role. The photochemistry of silicon substituted phthalim-ides has been the subject of a review which discusses how organosilanes can participate efficiently as donors in PET, with the resulting radical cations undergoing rapid desilylation, producing radicals that form carbon-carbon... [Pg.190]

The main process that occurs in silicones that contain vinyl groups is photo-scission. Also, the vinyl groups are photo-oxidized into silanols, carboxylic acids, and esters. Part of the silanols are condensed into high molecular weight silicones [585]. [Pg.676]

Salonen J, Lehto VP, Laine E (1999b) Photo-oxidation studies of porous silicon using a microcalorimetric method. J Appl Phys 86(10) 5888-5893... [Pg.48]

Koropecki R, Arce RD, Schmidt J (2004a) Photo-oxidation effects in porous silicon luminescence. Phys Rev B 69 205317 1-205317 6... [Pg.140]

Zhang LZ, Zong BQ, Zhang BR, Xu ZH, Li JQ, Qin GG (1995) Photoluminescence peak energy evolution for porous silicon during photo-oxidation and y-ray oxidation. J Phys Condens Matter 7 697-704... [Pg.143]

Photo-chemical stability in PVC mixtures depends strongly on surface activity, particle size distribution, and the filling load of the fillers used. Aging behavior improves with small amounts (0 to 1 vol.%) of silicon dioxide due to improved stabilizer distribution. Larger SiOj loads, however, result in intensified photo-oxidative degradation. Ground natural chalks (calcium carbonate) up to a filler load of 10 vol.% do not influence natural weathering [683]. [Pg.493]

The photodegradation and photo-oxidative degradation of different poly-silicones include two main groups polysilanes (section 4.15.1) and poly-siloxanes (section 4.15.2). [Pg.326]

Semiconductor-electrolyte interface, photo generation and loss mechanism, 458 Semiconductor-oxide junctions, 472 Semiconductor-solution interface, and the space charge region, 484 Sensitivity, of electrodes, under photo irradiation, 491 Silicon, n-type... [Pg.642]

See other pages where Silicon photo-oxidation is mentioned: [Pg.173]    [Pg.173]    [Pg.174]    [Pg.174]    [Pg.611]    [Pg.225]    [Pg.96]    [Pg.244]    [Pg.295]    [Pg.307]    [Pg.22]    [Pg.354]    [Pg.491]    [Pg.240]    [Pg.137]    [Pg.33]    [Pg.260]    [Pg.260]    [Pg.676]    [Pg.220]    [Pg.45]    [Pg.231]    [Pg.2114]    [Pg.600]    [Pg.236]    [Pg.66]    [Pg.282]    [Pg.303]    [Pg.295]    [Pg.139]    [Pg.246]    [Pg.476]    [Pg.106]    [Pg.191]    [Pg.203]    [Pg.180]   
See also in sourсe #XX -- [ Pg.320 ]



SEARCH



Oxidation silicones

Oxides silicon oxide

Oxidized silicon

Silicon oxidation

Silicon oxides

© 2024 chempedia.info