Ossila OFET components and substrates

Below is our collection of components for the fabrication of OFETs. Please see our OFET fabrication system overview for more details on how the components fit together.

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Substrates


ITO substrates for OFETs

ITO OFET substrates

Unpatterned ITO substrates. Protected by photoresist to ensure a pristine surface. Ideal for spin-coating gate dielectrics on.




Silicon oxide substrates for OFETs

Silicon oxide OFET substrates

Silicon substrates with 100 nm oxide on n++ silicon. Pre-cut to fit the Ossila OFET fabrication system (E191) but also used for a number of other applications including ellipsometry and X-ray measurements. Sold on 200 mm wafer mounts with ~75 substrates per wafer.




Prepatterned ITO OFET substrates

Pre-patterned ITO OFET substrates

The Ossila pre-patterned ITO OFET substrates have been designed to enable the fabrication and characterisation of transistors without the need for vacuum evaporations or probe stations.




Synthetic quartz coated substrates

Synthetic quartz coated substrates

Flat glass substrates coated with 20 nm of SiO2.






Equipment


Source drain evaporation stack for OFETs

OFET source/drain evaporation stack

An integrated system for the fabrication of OFETs . Designed for use with Ossila standard sized substrates and with interchangeable shadow masks. Substrates and shadow masks sold separately.



Shadow mask - linear for OFETs

Shadow mask - linear

An OFET shadow mask designed for use in our standard substrate system, but which can also be used on wafers or cut into sections for use on different sized substrates. Contains 72 OFETs arranged into groups of six - each of which contains a 30 μm, 40 μm, 50 μm, 60 μm, 80 μm and 100 μm channel so that contact resistance can be eliminated. Linear (straight) channels. Designed for use in the Ossila source/drain evaporation stack (E191) but can also be used separately.



Shadow mask - interdigitated for OFETs

Shadow mask - interdigitated

An OFET shadow mask with interdigitated 40 μm channels for maximising channel length and increasing statistical data. Contains 72 identical OFETs arranged into groups of six. Designed for use in the Ossila source/drain evaporation stack (E191) but can also be used separately.



Top gate shadow masks

Top gate shadow masks

The OFET gate shadow mask is designed for thermal evaporation of gates either above or below the source-drain contacts on Ossila's (S141) standard OFET substrates (20mm x 15 mm).




OFET gate mask

OFET gate mask

An evaporation mask for deposition of gate contacts onto Ossila's pre-patterned ITO substrates (S161).




Substrate Rack for OFETs

Substrate rack

Rack to hold up to 20 substrates during processing (cleaning, solvent annealing etc). Milled from a single piece of polypropylene to give excellent resistance to a wide range of solvents, acids and bases. Also ideal for deposition of self-assembled monolayers onto substrates.



Tweezers

Tweezers

Type #2A tweezers for a good substrate grip and type #1 tweezers for removing substrates from masks.





Testing



OFET Test board

OFET Test Board

The Ossila OFET test board is designed to work with our pre-patterned substrates to eliminate the need for probe stations and make electrical contact to devices quick and simple.











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