932647

n-Type BBL:PEI ink

butanol-based

• Synonym(s): Poly(benzimidazobenzophenanthroline) polyethylenimine butanol ink, n-ink-40-1-B
• UNSPSC Code: 12352101

Properties

• description: Thermal stability (1h in N₂): Up to 350 °C
• Quality Level: 100
• composition: butanol (solvent)
• work function: 4.22 eV, UPS analysis
• conductivity: ((in plane): Up to 5 S/cm); ((out of plane): Up to 0.1 S/cm)
• λmax: 350 nm±5 nm; 600 nm±5 nm

Description

Application

Our n-type BBL:PEI ink is an butanol-based, eco-friendly and halogen-free precursor for high electron conductive and thermally stable (24 hours at 200 °C or 1 hour at 350 °C in N₂) thin films. This product has a fixed solid content of 0.2 wt%. This ratio between BBL:PEI (50 % PEI content) results in the highest conductivity. It enables conductivity of up to 8 S/cm and Seebeck coefficient of at least -60 µV/K. Resistant to prolonged air exposure.

It is compatible with large scale deposition methods, such as spray-coating and inkjet. The BBL:PEI ink can be further diluted for casting thin films in various thickness. BBL:PEI thin films were fabricated by spray-casting in air, followed by annealing at 140 °C for 2 h inside a nitrogen-filled glovebox or under vacuum to produce conducting films. The BBL:PEI ink, when processed, forms a high electron conducting n-type film that can be implemented as conducting layer in solar cells, thermoelectric generators, light-emitting diodes, or logic applications:

• OPV – Charge extracting layer in Organic Solar Cells
• SuperCapacitors – Negatrode in Organic Supercapacitors
• OECT – Active material in Organic Electrochemical Transistors
• OLED – Charge injecting layer in Organic Light Emitting Diodes

Preparation Note

• Always store the ink in dark and at ambient temperature.
• Shake the bottle vigorously to ensure an optimal dispersion of the ink prior to processing (by using ultrasonic bath for instance; 100 to 300 W for 30 min).
• The ink is primarily designed to be spray-casted, with an air-gun or similar spraying methods.
• The films are stable in air up to 2 days before its thermal activation.
• Always proceed with the thermal activation of ink under inert environments (vacuum, N₂, Ar, etc.) or if properly encapsulated with an air-stable compound.
• Thermally activated films of our ink films are not affected by chloroform, chlorobenzene, 1,8-diiodooctane, dimethylformamide and dimethyl sulfoxide.

Safety Information

• Pictograms: GHS02,GHS05,GHS07
• Signal Word: Danger
• Hazard Statements: H226 - H302 - H315 - H317 - H318 - H335 - H336
• Precautionary Statements: P210 - P233 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 3 - Skin Irrit. 2 - Skin Sens. 1
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 95.0 °F
• Flash Point(C): 35 °C