Indium Tin Oxide.pdf

8/13/2019 Indium Tin Oxide.pdf

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SPI SuppliesBrand Indium-Tin-Oxide

(ITO) Coated Substrates

Choose from a variety of resistivities for a range of applications for ITO coated

substrates

Introduction:The concept behind the use of indium-

tin-oxide (ITO) coated microscope

slides is surprisingly simple: Take amicroscope slide, be it made of glass,

or quartz, or even plastic, coat it withITO, apply a suitable conductor strip

at the ends, connect electrical leads (to

put a voltage potential across the slide) and the slide will be uniformly heated, higher

even than the boiling point of water (if desired). High transparency (from UV to NIR)ITO coatings have applications not only for microscopy but any time planar, electrically

conductive surfaces are required that have the just indicated transparency. Our coatings

are also used by researchers in the areas of liquid crystal display technology, polymerlight emitting diode technology and related applications. Our ITO coatings in general,

provide good transparency, good conductivity with reduced charging of the substratesurface.

Anti Reflective Coatings:The ITO coating itself is reflective, the antithesis of being "anti-reflective". SPI Suppliesis now able to offer our ITO coated substrates with high quality anti-reflective as well as

index matching coatings.

Increased transmittance:For those doing microscopy with ITO coated slides, there are times when no matter how

much transmittance there is, just a bit more is needed. Up until now there was nothing

anyone could do about that. But using the latest technology in the thin film coatingsindustry, SPI can now offer two additional coatings for slides.

1. Index matching coating (IMC) involves the application of a thin quartz layer on top ofthe already applied ITO layer. The miracle of the IMC quartz layer is that the

transmittance is boosted up considerably.


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2. Antireflective (AR) coating which is a quartz coating on the side of the substrate

opposite to the side with the ITO coating.

Do all users need an index matching coating or an AR coating, remembering that we are

talking about coatings to increase transmittance? The answer is probably not everyone

but for many of our customers, since transmittance is one of those things in life that wesay "never enough", the possibility of getting these additional coatings is highly attractive

for their work.

No SiO2 passivation layers present under the ITO coating!While certain products used in research are seen by the typical user as being "generic",

that all brands are "the same", let us assure you that this is not the case for ITO coatings.

The SPI Supplies Brand of ITO coated substrates are most certainly not like any other.While we surely do want to protect our proprietary technology and know how, we do

want to cite one important difference: The SPI Supplies ITO coatings are not applied over

an SiO2passivation layer and the absence of such a passivation layer can have important

advantages to many users.

How can we get away with no passivation layer?Because of the uniqueness of our process, one absolutely need not worry about the

leaching of alkali oxides into liquid crystal systems, and therefore there is no need for a

passivation layer. Our ability to avoid this costly step results in a lower cost production

process and at the same time, results in an incremental increase in transmittance. SPISupplies can of course, provide ITO coatings over an SiO2 layer, but it will also add to

the final price and would be treated as a special order.

Refractive index of the ITO coatings:For those who need it, we can provide estimates of the refractive index of the ITO

coatings products by SPI Supplies.

Cleaning your ITO-coated slides:Each SPI Supplies Brand ITO coated slide arrives individually wrapped in a special

protective paper selected to keep the slide clean and damage free during shipment andstorage. However, there could be times when the user would feel more comfortable

giving the slide a cleaning treatment prior to use, and the recommended cleaning solvent

is isopropyl alcohol. This solvent should not injure the ITO coating but with prolongedcontact, it could start to dissolve a bus-bar if present. Under no circumstances should you

try cleaning with alkali solutions. Dilute sodium hydroxide solutions are commonly used

for patterning ITO.

We would also recommend a high quality lint-free cotton wiper such as our own SPI-

Wipes Lint-Free Cotton Wipers. In any case, whatever you do, do not use any acid forcleaning, even a weakly acid agent, because it will definitely damage the ITO coating

irreparably.


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If you are a "new-bie" to this field, we have attempted to "walk you through" the product

selection process. We realize that out of our desire to create off-the-shelf products thatcan be manufactured in quantity, thereby lowering both production and selling prices for

both ourselves and our customers, we do not want to create the appearance that we are

closed to the idea of making something "custom". We are happy to quote andmanufacture such custom products for our customers. However, for research applications,

where the numbers tend to be smaller, keep in mind that the tooling and other set up costs

to make the first one can be considerable, and these are costs over which we have littlecontrol.

Custom ITO coating of customer supplied substrates:We are very happy to receive customer supplied substrates for ITO coating. Included inour pricing quotes for such a service is the proper cleaning and preparation of the

substrates prior to coating. This includes a special proprietary solvent cleaning followed

by a plasma cleaning to promote adhesion of the coating to the substrate. Let us know

your requirements being sure to tell us the outside dimensions of the items to be coatedand also the resistivity wanted, remembering that using one of our standard resistivities

will result in the lowest cost to you. This also means that we can apply over the ITOcoating an index matching layer designed to increase the transmittance. And additionally,

we can apply a proprietary antireflective (AR) coating on the opposite face to increase the

transmittance even further.

Use of busbars:When the ITO coated substrate is to be connected electrically, some facility must be

made for the electrical contacts. In former days, early workers used a piece of copper tapethat was carefully wrapped around the edge of the substrate but in later years, we

developed an efficient process of screen printing onto the substrates a silver paint (e.g.

ink) that once cured, exhibits a resistivity of better than 0.2 ohms per square. All SPIsupplied busbars are silver lines applied this way with this resistivity.

What we can not do.......Our unique coating facility is set up to coat only ITO and quartz and nothing else. We arenot able to coat indium oxide or tin oxide, only ITO and quartz. The quartz that we coat is

hard, durable and with a refractive index of ~ 1.47.

Cutting down larger coated pieces to smaller sizes:Some of our customers are at times tempted to purchase a large piece of ITO-coated

glass, with the idea of scribing and then breaking down the glass to smaller sizes. Lifeshould only be that simple! Unfortunately, when this is done, there is sufficient disruption

to the ITO coating at the edges that it is never a good result. We always advise cutting the

glass down to the desired size and then coat the cut pieces. This does result in additionalhandling, and higher costs but one is assured of a much higher quality result.


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We segment our customers for these unique products as being either Microscopy

Cover slips Slides Large glass plates Other applications and custom coating

Select your area of interest and let us lead you through the selection process which

hopefully will lead to the optimum product for your applications.

A Note on Terminology:The electrical properties of the ITO coating are given as surface resistivity, measured in

ohms per square. In some disciplines, people refer to this as sheet resistance. For reasons

perhaps of laziness, or other reasons, most people just call this number "resistivity". Butwe should also point out that this is definitely not what is called "bulk resistivity. To

determine the actual resistance of a slide, it is necessary to do a short calculation. For

example, if the resistivity is 30 to 60 ohms per square, then the resistance of the coating

on a slide 1 x 3 inches (25 x 75 mm), measured along the length, is 90 to 180 ohms. Thisis determined by dividing the length of the slide by the width of the slide, in our example

dividing 3 by 1, or 75 by 25, and multiplying that result (3 in our example) by theresistivity. No matter what units you use to measure the dimensions, the resistance of the

coating is the same.

Caution:Electrical resistance heating can expose you to potentially lethal voltages. We

recommend that you use only low voltage power supplies for this application.

SPI SuppliesBrand ITO Coated Cover

Slips

Available in both glass and quartz (for UV microscopy applications)

Introduction:The concept behind the use of

indium-tin-oxide (ITO) coated

microscope cover slips, as it is forITO coated slides, is surprisingly

simple: Take a cover slip, be it

made of glass, or quartz, or even


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plastic on special request, coat it with ITO, apply a suitable conductor strip at the ends,

connect electrical leads (to put a voltage potential across the slide) and the cover slip will

be uniformly heated, higher even than the boiling point of water (if desired). Hightransparency (from UV to NIR) ITO coatings have applications not only for microscopy

but any time planar, electrically conductive surfaces are required that have the just

indicated transparency. Our coatings are also used by researchers in the areas of liquidcrystal display technology, polymer light emitting diode technology and related

applications. We offer ITO coated cover slips in four different standard ITO coating

thicknesses.

No SiO2 passivation layers present!While certain products used in research are seen by the typical user as being "generic",

that all brands are "the same", let us assure you that this is not the case for ITO coatings.The SPI Supplies Brand of ITO coated substrates are most certainly not like any other.

While we surely do want to protect our proprietary technology and know how, we do

want to cite one important difference: The SPI Supplies Brand ITO coatings are not

applied over an SiO2

passivation layer and the absence of such a passivation layer canhave important advantages to many users.

How can we get away with no passivation layer?Because of the uniqueness of our process, one absolutely need not worry about the

leaching of alkali oxides into liquid crystal systems, and therefore there is no need for a

passivation layer. Our ability to avoid this costly step results in a lower cost productionprocess and at the same time, results in an incremental increase in transmittance. SPI

Supplies can of course, provide ITO coatings over an SiO2 layer, but it will also add to

the final price and would be treated as a special order. It has been our experience thatvirtually all customers are very happy to not have to have present an SiO2 layer. But if

you should be an exception, we can of course always supply you with production with

such a layer (but minimum order requirements will apply).

Cleaning your ITO-coated cover slips:Each SPI Supplies

Brand ITO coated cover slip arrives individually wrapped in a

special protective paper selected to keep the cover slip clean and damage free duringshipment and storage. However, there could be times when the user would feel more

comfortable giving the cover slip a cleaning treatment prior to use, and the recommended

cleaning solvent is isopropyl alcohol. This solvent should not injure the ITO coating butwith prolonged contact, it could start to dissolve a bus-bar if present. Make sure the

solvent used is spectroscopic purity because any organic residues will detract from the

performance of the cover slip. The best way to be sure the cover slip is free of all organiccontamination is to perform a plasma cleaning in the SPI Supplies Plasma Prep II plasma

etcher. We would also recommend the use of a high quality lint-free cotton wiper such as

our own SPI-Wipes Lint-Free Cotton Wipers.

If you are a "new-bie" to this field, we have attempted to "walk you through" the product

selection process.


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We realize that out of our desire to create off-the-shelf products that can be manufactured

in quantity, thereby lowering both production and selling prices for both ourselves and

our customers, we do not want to create the appearance that we are closed to the idea ofmaking something "custom". We are happy to quote and manufacture such custom

products for our customers. However, for research applications, where the numbers tend

to be smaller, keep in mind that the tooling and other set up costs to make the first onecan be considerable, and these are costs over which we have little control.

A Note on Terminology:The electrical properties of the ITO coating are given as resistivity, measured in ohms per

square. To determine the actual resistance of a cover slip, it is necessary to do a short

calculation. For example, if the resistivity is 30 to 60 ohms per square, then the resistance

of the coating on a cover slip 25 x 75 mm, measured along the length, is 90 to 180 ohms.This is determined by dividing the length of the slide by the width of the slide, in our

example dividing 3 by 1, or 75 by 25, and multiplying that result (3 in our example) by

the resistivity. No matter what units you use to measure the dimensions, the resistance of

the coating is the same.

Standard resistivities offered:We have defined four standard resistivities. We run these four resistivities (e.g. ITO

coating thickness) frequently and we are therefore able to insert custom runs for

customers without charging the cost of a full run against a small quantity ordered. We can

of course make any other resistivity, but the set up charges will be much higher.Therefore when specifying a custom coating resistivity, try to stick to one of the standard

resistivities but if you can't, and some customers can not, then we can produce whatever

resistivity that might be needed. However you will have to be prepared for the added costassociated with the non-standard resistivity.

Busbar vs. No Busbar:Most traditional applications involved the passage of an electrical current through the

ITO coating and that meant that one way or another, electrical leads would have to be

applied to the cover slip at two opposite ends. On the other hand, some emerging

applications do not require such electrical contacts. Yet others prefer to apply their ownbusbars. That is why we offer the product both with as well as without the burbars.

Caution:Electrical resistance heating can expose you to potentially lethal voltages. We

recommend that you use only low voltage power supplies for this application.


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Available cover slip products:

Thickness #1 (0.13 to 0.17 mm thick)

Glass (Packs of 100 cover slips):

18 x 18 mm

Busbar No Busbar

Available resistivities:SPI # SPI #

70 - 100 ohms 06462B-AB 06462-AB

30 - 60 ohms 06463B-AB 06463-AB

15 - 30 ohms 06464B-AB 06464-AB

8 - 12 ohms 06465B-AB 06465-AB

20 x 20 mm

Busbar No Busbar

Available

resistivities:SPI # SPI #

70-100 ohms 06466B-AB 06466-AB

30-60 ohms 06467B-AB 06467-AB

15-30 ohms 06468B-AB 06468-AB

8-12 ohms 06469B-AB 06469-AB


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22 x 22 mm

Busbar No Busbar

Available

resistivities:

SPI # SPI #

70-100 ohms 06470B-AB 06470-AB

30-60 ohms 06471B-AB 06471-AB

15-30 ohms 06472B-AB 06472-AB

8-12 ohms 06473B-AB 06473-AB

22 x 26 mm

Busbar No Busbar

Available


70-100 ohms 06474B-AB 06474-AB

30-60 ohms 06475B-AB 06475-AB

15-30 ohms 06476B-AB 06476-AB

8-12 ohms 06477B-AB 06477-AB

22 x 40 mm

Busbar No Busbar

Available


70-100 ohms 06494B-AB 06494-AB

30-60 ohms 06495B-AB 06495-AB

15-30 ohms 06496B-AB 06496-AB

8-12 ohms 06497B-AB 06497-AB


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Thickness #1.5 (0.16 to 0.19 mm thick)

Glass (Packs of 100 cover slips):

18 x 18 mm

Busbar No Busbar

Available


70-100 ohms 06478B-AB 06478-AB

30-60 ohms 06479B-AB 06479-AB

15-30 ohms 06480B-AB 06480-AB

8-12 ohms 06481B-AB 06481-AB

20 x 20 mm

Busbar No Busbar

Available


70-100 ohms 06482B-AB 06482-AB

30-60 ohms 06483B-AB 06483-AB

15-30 ohms 06484B-AB 06484-AB

8-12 ohms 06485B-AB 06485-AB

22 x 22 mm

Busbar No Busbar

Available


70-100

ohms

06486B-AB 06486-AB

30-60 ohms 06487B-AB 06487-AB

15-30 ohms 06488B-AB 06488-AB

8-12 ohms 06489B-AB 06489-AB


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22 x 26 mm

Busbar No Busbar

Available

resistivities:

SPI # SPI #

70-100 ohms 06490B-AB 06490-AB

30-60 ohms 06491B-AB 06491-AB

15-30 ohms 06492B-AB 06492-AB

8-12 ohms 06493B-AB 06493-AB

22 x 40 mm

Busbar No Busbar

Available


70-100 ohms 06498B-AB 06498-AB

30-60 ohms 06499B-AB 06499-AB

15-30 ohms 06500B-AB 06500-AB

8-12 ohms 06501B-AB 06501-AB


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(ITO) Coated Microscope Slides

Choose from a variety of resistivities for a range of applications for heating

Useful additional information first:Is it easy to tell which side of the slidehas the coating? This is one of the

most often-asked questions of those

who are first-time purchasers of the

coated slides.

There are actually two ways, but theeasiest to tell if the side has been

coated is to hold it up to the light. There should be a purple tint which can be seen right to

the very edge of the glass. If you can only see it part way to the edge, the ITO coating isthe other side.

Of course, the "acid test" is to attach a multimeter to one of the sides. There will be noreading if there is no coating. And of course, there will be a reading if it is the side with

the coating.

For the selection of the "right" ITO-coated microscope slide product, the selectionprocess includes the following steps:

How to select the right slide for you:

Substrate material (e.g. glass, quartz, plastic, etc)

Selection of the substrate size

Selection of the ITO coating resistivity

Selection of the busbar

Microscope slide products:

Available "standard" ITO coated one side

Float glass unpolished in 1.1 mm thickness

Float glass unpolished in 1.1 mm thickness, Busbar

Float glass polished in 0.7 mm thickness


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Float glass polished in 0.7 mm thickness, Busbar

Fused quartz in 1.1 mm thickness

Polyester film 0.2 mm thickness

Available "standard" ITO coated with index matching coating with busbar

Float glass unpolished in 1.1 mm thickness Float glass polished in 0.7 mm thickness

Available "standard" ITO coated with index matching and antireflective coatings

with busbar

Float glass unpolished in 1.1 mm thickness

Float glass polished in 0.7 mm thickness



Selection of the substrate material

Select from the following choices in substrate materials:

Float glass (soda lime)These are what are generally called "normal microscope slides" and are available

either as a) polished or b) unpolished. The main reason one would worry about

polishing, if if they needed to have the ultimate in surface flatness, since thatparameter is improved greatly as a result of the polishing. We can report the

following specifications for flatness:

Unpolished:Typical surface roughness is


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slides that have been offered by SPI Supplies for a number of years and which are

used routinely by researchers all over the world.

The question of flatness often times arises and the SPI quartz slides are made to a

typical flatness of 2-4 "bands" per in., but quartz in 1 mm thickness can bend

under its own weight. When placing an optical flat on top to measure flatness, theslide or cover slip will conform to the flat, but when on top of an optical flat, it

does not weigh enough to flatten itself out. We are told that slides and cover slips

can not be made with greater flatness than 2-4 "bands" per in.

PlasticWe are still developing this part of the product line.

Polymer filmWe can offer polyester (PET) film in 200x200mm x 0.2 mm in thickness. These

ITO-coated films have the major advantage of being able to be bent to extremely

small radii of curvature (less than 10 mm) without even the slightest hint of

deterioration of the ITO-coating. This is made possible, at least in part, because ofthe superior SPI Supplies technology in terms of adhesion of the ITO coating to

the PET substrate. This form of our ITO coating technology is of value to anyone

in need of flexible, transparent electrodes. These ITO-coated PET substrates canbe cut down to their needed size with a GEM razor blade or good scissors.


(ITO) Coated Microscope SlidesSelection of the substrate size

All substrates are available in a number of standard sizes as well as customer sizes to

meet special requests for customers with special needs.

Float glass, unpolished:Standard substrate sizes: 25x75 mm; 50x75 mm

Float glass, polished (all are 0.7 mm thick):Standard substrate sizes: 25x75

mm; 50x75 mm

Fused quartz (GE 124):Standard substrate sizes: 25x25 mm; 25x50 mm; 25x75

mm Polymer film (polyester, PET):75 x 25 mm x 0.2 mm thick


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Selection of the ITO coating resistivity

Coating resistivities are available as standardproducts:

Float glass (soda lime) Microscope Slides

Unpolished (standard microscope slides)

Sheet resistance: Nominal transmittance:

70-100 ohms (15-30 nm); Greater than 88%




Polished






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Fused quartz microscope slides (GE 124):


Less than 100 ohms (20 nm); 90%

10-20 ohms (200 nm); 85%

Polyester (PET) Polymer Film




SPI SuppliesIndium-Tin-Oxide (ITO)

Coated Microscope SlidesSelection of the busbar if one is desired

Introduction:With or without busbar is the question. We will try to answer that question in the

following several paragraphs.

In order to gain the benefit of the ITO coating, one does need the ability to make

electrical connections from the coating to the power source. This can be done by the

experimenter or the slides can be purchased with the busbar already applied and ready touse.

There are a number of different qualities of the busbar that one could apply. As astandard product, we offer the slides with a silver line silk screened on at the edge (or

elsewhere is desired) that exhibits, when cured and dried, exhibits a surface resistivity of

better than 0.2 ohms / square. The busbar is typically three micrometers in thickness with

a three millimeter width.


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SPI SuppliesBrand

Indium-Tin-Oxide(ITO) Coated

Microscope Slides

Float glass unpolished in 1.1 mm thicknes

Full details of the SPI Supplies Brand indium-tin-oxide (ITO) coated microscope slidesare given elsewhere on the SPI Supplies website. Coated slides are available both

polished and unpolished, fused quartz and also polyester. and also, with or without bus-bars for making the electrical contacts.

Our standard packaging is 100 pieces per pack. However, for certain products, 25 pieces

per pack is available but only where indicated.

25 x 75 mm (1.1 mm thick)

Packaging: 100 slides per pack

25 slides per pack (Where indicated)

Resistivities SPI #

70-100 ohms Pk (100) 06400-AB

Pk (25) 06400-CF

30-60 ohms Pk (100) 06401-AB

Pk (25) 06401-CF

15-30 ohms Pk (100) 06402-AB

Pk (25) 06402-CF

8-12 ohms Pk (100) 06403-AB

Pk (25) 06403-CF


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Packaging:100 slides per pack

Resistivities SPI #

70-100 ohms Pk (100) 06404-AB

Pk (25) 06404-CF

30-60 ohms Pk (100) 06405-AB

Pk (25) 06405-CF

15-30 ohms Pk (100) 06406-AB

Pk (25) 06406-CF

8-12 ohms Pk (100) 06407-AB

Pk (25) 06407-CF


Packaging:100 slides per pack25 slides per pack (Where indicated)

Resistivities SPI #

70-100 ohms Pk (100) 06408-AB

Pk (25) 06408-CF

30-60 ohms Pk (100) 06409-AB

Pk (25) 06409-CF

15-30 ohms Pk (100) 06410-AB

Pk (25) 06410-CF


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8-12 ohms Pk (100) 06411-AB

Pk (25) 06411-CF



Float glass unpolished in 1.1 mm thicknes, Busbar

Introduction:These slides are offered with a "busbar", a silver silk screened contact pad on each end of

the slide, making it easy for the application of electrical contacts. The surface resistivity

of the silver line is less than 0.2 ohms/square.

25 x 75 mm (1.1 mmthick)

Packaging:100 slides perpack

Resistivities SPI #

70-100 ohms Pk (100) 06412-AB

Pk (25) 06412-CF

30-60 ohms Pk (100) 06413-AB

Pk (25) 06413-CF

15-30 ohms Pk (100) 06414-AB

Pk (25) 06414-CF

8-12 ohms Pk (100) 06415-AB

Pk (25) 06415-CF


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50 x 75 mm (1.1 mm

thick)Packaging:100 slides perpack

Resistivities SPI #

70-100 ohms Pk (100) 06416-AB

Pk (25) 06416-CF

30-60 ohms Pk (100) 06417-AB

Pk (25) 06417-CF

15-30 ohms Pk (100) 06418-AB

Pk (25) 06418-CF

8-12 ohms Pk (100) 06419-AB

Pk (25) 06419-CF

25 x 25 mm (1.1 mmthick)

Packaging:100 slides perpack

Resistivities SPI #

70-100 ohms Pk (100) 06420-AB

Pk (25) 06420-CF


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30-60 ohms Pk (100) 06421-AB

Pk (25) 06421-CF

15-30 ohms Pk (100) 06422-AB

Pk (25) 06422-CF

8-12 ohms Pk (100) 06423-AB

Pk (25) 06423-CF



Fused quartz in 1.1 mm thickness

Introduction:These slides are ITO coated quartz for those working in the UV or near infrared range of

illumination, where normal float glass slides cannot be used (because they are not

transparent in these wavelength ranges of illumination). For work that does not require anITO coating, select the SPI Supplies

Brand of fused quartz microscope slides and cover

slips. And for those requiring the lowest possible levels of trace elements, consider using

our fused silica slide products.

Busbars:The quartz slides are also available with busbars, a silver silk screened line at the edges

of the slides for the making of electrical contacts. Tell us what you need and we can offerpricing.


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25 x 75 mm

Resistivities SPI #

Pack of 25 70-100 ohms 06442-CF

Pack of 100 70-100 ohms 06442-MB

Pack of 25 30-60 ohms 06443-CF

Pack of 100 30-60 ohms 06443-MB


Pack of 100 15-30 ohms 06444-MB


Pack of 100 8-12 ohms 06445-MB

50 x 75 mm

Resistivities SPI #

Pack of 25 70-100 ohms 06446-CF

Pack of 100 70-100 ohms 06446-MB


Pack of 100 30-60 ohms 06447-MB


Pack of 100 15-30 ohms 06448-MB




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25 x 25 mm

Resistivities SPI #

Pack of 25 70-100 ohms 06450-CF

Pack of 100 70-100 ohms 06450-MB


Pack of 100 30-60 ohms 06451-MB


Pack of 100 15-30 ohms 06452-MB



SPI SuppliesBrand "Standard" ITO

Index Matching Coating with Busbar -

Unpolished

Substrate (unpolished) glass plus ITO coating + quartz top coating

Introduction:The main reason index matching coatings are important is that such coatings increase thelight transmission through the coated substrate. The index matching coatings contain a

layer of SiO2 (quartz) as a top coating and the end result of that is the the total

transmittance is increased noticeable amounts.

How does this kind of coating work?An ITO only coating has associated with it, a particular transmittance. An ITO coating

only is quite reflective and when the quartz coating is applied, it adds antireflectionproperties which means that what is no longer reflected, will be transmitted, and that is

the mechanism by which a quartz coating increases the transmittance.


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What does this mean in terms of microscopy?Simply put, the index matching coating increases transmittance through the slide, which

for some experiments, can be very very importance.

Busbars:

These index matched slides are offered only with busbars.

Custom coatings:We offer standard off-the-shelf slides with index matching coatings but we can alsomanufacture custom index matching coatings.We can take your substrates (or supply

them for you), coating them with the specified resistivity followed by the quartz coating

of 80 nm. Note that the 80 nm can be varied to meet customer requirements. Let us know

your requirements so that we can get back to you with pricing and delivery time.

Available products:Presently we can supply the index matching coating in the form of off-the-shelf

microscope slides (1" x 3" in size) or on your custom substrates which could be glass,quartz, or even certain plastics such as polyester, acrylic, and polycarbonate. If you

require something special, let us know your requirements.

Microscope Slides with Busbars25 x 75 mm (1.1 mm thick)

Packaging:100 slides per pack

25 slides per pack (Where indicated)

Resistivities SPI #

70-100 ohms Pk (100) 06412IM-AB

Pk (25) 06412IM-CF

30-60 ohms Pk (100) 06413IM-AB

Pk (25) 06413IM-CF

15-30 ohms Pk (100) 06414IM-AB

Pk (25) 06414IM-CF

8-12 ohms Pk (100) 06415IM-AB

Pk (25) 06415IM-CF


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SPI SuppliesBrand ITO Coated Glass

PlatesUse our standard size glass plates to be cut up to your own desired custom sizes

Introduction:SPI Supplies has long offered a product line of ITO coated glass and plastic microscope

slides in different ITO coating thicknesses (e.g. resistivities).

Some customers have needs for varying sizes of ITO coated glass and consequently we

offer large coated glass plates in a standard stock size.

Coating thickness:One should select the coating thickness on the basis of the desired coating resistivity. Onecan select the appropriate coating from our conversion chart that relates coating thickness

to resistivity.

Cutting down larger coated pieces to smaller sizes:Some of our customers are at times tempted to purchase a large piece of ITO-coated

glass, with the idea of scribing and then breaking down the glass to smaller sizes. Life

should only be that simple! Unfortunately, when this is done, there is sufficient disruptionto the ITO coating at the edges that it is never a good result. We always advise cutting the

glass down to the desired size and then coat the cut pieces. This does result in additional

handling, and higher costs but one is assured of a much higher quality result.

Standard dimensions:300 mm x 300 mm x 1 mm thick

Resistivity, ohms per: SPI #

70 - 100 06458-AB

30 - 60 06459-AB

15 - 30 06460-AB

10 - 15 06461-AB


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SPI SuppliesITO Custom Coated

Substrates

Let us quote on your custom ITO coating requirements

Introduction:SPI Supplies now offers an ITO (indium-tin-oxide) custom coating service for customersin industry, government and academia, in both research as well as production quantities.

We are experienced with applications for displays, computer touch screens, and electrical

control panels manufactured from substrates of glass or plastic (polycarbonate, polyester,or acrylic). All are available with or without busbar connections. We can coat substrates

supplied by SPI Supplies or by our customers who have special shapes to be coated.

What we offer

Summary of ITO custom coating service:

Resistivities from 8 to 1500 ohms/sq on glass substrates and 10 to 1500 ohms/sqon plastic

Shielding effectiveness typically 25 to 30 dB.

Light transmission up to 90%.

Excellent coating adhesion to substrate.

Highly resistant to temperature, humidity, abrasion and salt spray.

Available in size up to 1000mm by 1000mm.

Coating of customer supplied substrates

Stock sheets available.

Our most common applications:For researchers, the most common application is for ITO coated microscope slides.

But for our production quantity customers, the main applications are for electromagnetic

shielding, ESD protection, touch panels, and heated windows.

Let us offer you pricing for your important requirements:Just send us a short message being sure to tell us.

1. desired resistivity2. dimensions of the substrates to be coated (and thickness),3. whether substrates will be supplied by SPI or by customer4. number of substrates to be coated

Note that all substrates, be they supplied by SPI Supplies or by our customers are

subjected to a precleaning with proprietary solvents and then a plasma cleaning in order

to remove all traces of contaminants and to promote adhesion of the ITO coating.

Documents

Indium Tin Oxide.pdf