ITO Substrates for OLEDs (Pixelated Anode)

Order Code: S101

Price

(excluding Taxes)

£425.00


Pixelated anode ITO substrates for OPV/OLED testing. Use with our cathode deposition mask (E111) to create individual pixels. Substrates only - no encapsulation or connection system.

 

Datasheet

Substrate size 20 mm x 15 mm
Pack size 100 substrates per standard pack
Thickness 1.1 mm
Pixel dimensions (with cathode) 3 mm x 1.5 mm (4.5 mm2)
Glass type Polished soda lime, float glass
Substrate coating Fully oxidized ITO
ITO thickness 100 nm
ITO resistance 20 Ω / square
Glass roughness <1 nm RMS By AFM
ITO roughness 1.8 nm RMS (By AFM)
Packaging Stacks of 20 separated by cleanroom paper

 

Ossila's pixelated anode ITO substrates can be used to prepare organic photovoltaic cells and organic light emitting diodes. They are manufactured from commercial grade ITO used in the flat panel display industry in order to endure high consistency and very low defect rates.

OLED substrate (pixelated anode) held by tweezers - close up photo

Each substrate has six ITO fingers which when used with an Ossila evaporation shadow masks creates six independent devices with dimensions of 1.5 mm x 3 mm (v1 cathode mask) or 1.5 x 4 mm (v2 cathode mask). An additional cathode strip allows easy connection of both anodes and cathodes by attachment of electrical legs. A simple cleaning procedure then provides a clean and hydrophilic surface perfect for spinning PEDOT:PSS.

 

Pixelated anode substrate overview
Device Schematic and a Completed Device

 

Use: To prepare the substrates for use we recommend cleaning in a solution of hot sodium hydroxide (NaOH) which will both help remove any dust and also provide a hydrophilic surface without the need for a plasma or UV clean (note that some materials/solutions particularly close to the wetting envelope may still benefit from a plasma clean). We use the following cleaning routine for OPVs and OLEDs, however please note that exact times will depend upon the power and temperature of the sonic bath and that excessive sonication in NaOH can also increase the resistance of the ITO surface

  • Sonicate in 10% NaOH solution for 5 mins using a hot bath
  • Rinse thoroughly in hot water
  • Sonicate in fresh 10% NaOH solution for 5 mins using a hot bath
  • Rinse thoroughly in hot water
  • Store immersed in water until required
  • N2 blow dry

 

AFM scan of ITO substrate
10 µm x 10 µm AFM scan with Z-scale of ±5 nm.

 

AFM of glass surface of ITO substrates
AFM of glass surface (1 µm x 1 µm x 3.5 nm).Courtesy of Richard T Grant.

 

Prepatterned ITO substrate absorption spectrum
Absorption of ITO substrates with and without PEDOT:PSS and epoxy/coverslip

 

Download data as Excel spreadsheet here.

 

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.