squishy
,
Saturday, 14th of August 2010 01:47:34 AM
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want to prepare transparent conducting glass,can any one help
squishy
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Joined: Saturday, 24th of April 2010, 09:09:50
Posts: 2045
Flower Pot
,
Sunday, 15th of August 2010 05:24:22 PM
good lord. sometimes an easy question deserves an easy answer.
Flower Pot
Registered User
call up Libby Owens Ford & ask for some Indium Tin Oxide (ITO) coated
Joined: Monday, 14th of June 2010, 16:55:26
glass. there is nothing you can place onto glass that will be spectrally
Posts: 1972
clean. each of these coatings (even ATO) will have a slight color to
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them. do you notice it when you look thru low E coated glass on a
building/house? not really.
there are several places to obtain this stuff. in order to get good
spectral transmission & good conductivity, these tin oxide coatings need
to be put down hot (300C ish). A place in Virginia can put it down on
plastic, but with much higher resistance (CP films). Just google ITO
glass. you will have hits up the *&^. This is for sheet glass. making a
tube conductive on the inside is far more difficult (but possible).
Contact someone at JDSU or Corning for that info.
FWIW The anatase & rutile versions of TiO2 are both nonconductive.
ChiCkEN NUGGEt
,
Monday, 16th of August 2010 07:00:33 PM
Transparent Conducting Glass :
ChiCkEN NUGGEt
I :Nanoporous titania (TiO2) or titania nanotubes could provide a
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continuous nanostructured electron-conducting anode for organic
Joined: Wednesday, 2nd of June 2010, 20:11:07
photovoltaics. In this work, nanoporous titania was formed by anodizing
Posts: 1805
thin films of titanium on both glass & transparent conducting oxide (TCO)
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substrates. Titanium thin films (500–700 nm) were deposited by radio
frequency (RF) magnetron sputtering. Films were anodized in acidic
electrolytes containing small amounts of hydrofluoric acid (HF) at
constant voltages ranging from 7 to 15 V. Scanning electron microscope
(SEM) analysis revealed a nanoporous structure. Nanoporous titania
structures were grown on glass in an electrolyte containing sulfuric acid,
trisodium citrate, & potassium fluoride, with pore diameters around 50 nm.
Analyzing the films at different anodization times, the stages of nanopore
formation were elucidated. Additionally, nanoporous titania was formed on a
TCO substrate by anodizing in an electrolyte containing acetic acid &
hydrofluoric acid. While not completely transparent, the nanoporous
titania is promising for use in organic photovoltaics.
II:A modified dip coating process was developed to deposit transparent
conducting sol-gel SnO[2]:Sb (ATO, antimony doped tin oxide) coatings
inside tubes & cavities in optical quality. The necessity for this
improvement arises from the fact that the conventional dip coating process
applied to tubes results in coatings with poor & non-reproducible
properties, showing large variations in the thickness, an increased
roughness & an island-like morphology. The main reason for this is found
in a delayed & restricted solvent evaporation, due to an impediment of a
laminar flow & a progressive saturation of the atmosphere inside the tube.
By means of an additional exhausting pipe, a forced laminar flow was,
therefore, generated inside the tube, which guarantees a fast evaporation
& hydrolysis of the sol-gel films by a continuous renewal of the
atmosphere. In this way, ATO coatings with an excellent thickness
uniformity & a low roughness of R[a] ≃ 1 nm could be deposited on
borosilicate glass tubes of 300 mm length & inner diameters down to 11 mm.
After a heat treatment at temperatures up to 550 °C, single layer coatings
exhibit a high optical transmission (T>85%) & a resistance down to 10 kΩ
over a length of 22 cm.
Pancake
,
Tuesday, 17th of August 2010 02:29:27 PM
transparency is normally associated to lack of free moving
Pancake
electrons (which give opacity/color to matter), therefor the conductivity
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would be very very low (see glass itself and all transparent crystals
Joined: Saturday, 24th of April 2010, 20:41:22
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